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June 2017
New Products Catalog
High Performance Analog ICs
LTC2063 2µA Supply Current, Low IB, Zero-Drift
Operational Amplifier
LTC2358-18 Buffered Octal, 18-Bit, 200ksps/Ch Differential
±10.24V ADC with 30VP-P Common Mode Range
LTC5553 3GHz to 20GHz Microwave Mixer
LTC7820 Fixed Ratio High Power Inductorless (Charge Pump)
DC/DC Controller
LTM8073 60VIN, 3A Silent Switcher µModule Regulator
LT8645S 65V, 8A Synchronous Step-Down Silent Switcher 2
with 2.5µA Quiescent Current
Contents
Amplifiers
LT®1997-3 Precision, Wide Voltage Range Gain Selectable Amplifier...................................................................................................................1
LTC®2063 2µA Supply Current, Low IB, Zero-Drift Operational Amplifier..............................................................................................................2
LTC6258/LTC6259/LTC6260 1.3MHz, 20µA Power Efficient Rail-to-Rail I/O Op Amps.........................................................................................3
LTC6419 Dual 10GHz GBW, 1.1nV/√Hz Differential Amplifier/ADC Driver............................................................................................................4
LTC6432-15 100kHz to 1.4GHz Differential ADC Driver/IF Amplifier.....................................................................................................................5
Data Converters
LTC2320-12 Octal, 12-Bit + Sign, 1.5Msps/Ch Simultaneous Sampling ADC.......................................................................................................6
LTC2320-14 Octal, 14-Bit + Sign, 1.5Msps/Ch Simultaneous Sampling ADC.......................................................................................................7
LTC2325-12 Quad, 12-Bit + Sign, 5Msps/Ch Simultaneous Sampling ADC..............................................................................................................8
LTC2325-14 Quad, 14-Bit + Sign, 5Msps/Ch Simultaneous Sampling ADC..............................................................................................................9
LTC2325-16 Quad, 16-Bit, 5Msps/Ch Simultaneous Sampling ADC...................................................................................................................10
LTC2333-18 Buffered 8-Channel, 18-Bit, 800ksps Differential ±10.24V ADC with 30VP-P Common Mode Range......................................................11
LTC2358-18 Buffered Octal, 18-Bit, 200ksps/Ch Differential ±10.24V ADC with 30VP-P Common Mode Range.................................................12
LTC2500-32 32-Bit Oversampling ADC with Configurable Digital Filter..............................................................................................................13
High Frequency
LTC5553 3GHz to 20GHz Microwave Mixer........................................................................................................................................................14
Inductorless DC/DC Controller
LTC7820 Fixed Ratio High Power Inductorless (Charge Pump) DC/DC Controller .............................................................................................15
Interface
LTM®2895 100MHz Isolated DAC SPI Serial Interface........................................................................................................................................16
Linear Regulator
LT3045-1 20V, 500mA, Ultralow Noise, Ultrahigh PSRR Linear Regulator with VIOC Control............................................................................18
Power over Ethernet Controller
LT4294 IEEE 802.3bt PoE++ PD Interface Controller..........................................................................................................................................19
µModule® Regulators
LTM4636-1 40A µModule Regulator with Overvoltage/Overtemperature Protection...........................................................................................20
LTM4650A Dual 25A or Single 50A DC/DC µModule Regulator with 1% DC Accuracy.......................................................................................21
LTM4650A-1 Dual 25A or Single 50A DC/DC µModule Regulator with 1% DC Accuracy...................................................................................24
LTM8073 60VIN, 3A Silent Switcher® µModule Regulator...................................................................................................................................25
LTM9100 Anyside™ High Voltage Isolated Switch Controller with I2C Command and Telemetry........................................................................28
Contents
Switching Regulators—Monolithic
LT8315 560VIN Micropower No-Opto Isolated Flyback Converter with 630V/300mA Switch...............................................................................29
LT8609S 42V, 2A/3A Peak Synchronous Step-Down Regulator with 2.5µA Quiescent Current..........................................................................30
LT8640S/LT8643S 42V, 6A Synchronous Step-Down Silent Switcher 2 with 2.5µA Quiescent Current.............................................................31
LT8645S 65V, 8A Synchronous Step-Down Silent Switcher 2 with 2.5µA Quiescent Current............................................................................32
Switching Regulators—Controller
LTC1871X Wide Input Range, No RSENSE™ Current Mode Boost, Flyback and SEPIC Controller.........................................................................33
System Monitor and Control
LTC4368 100V UV/OV and Reverse Protection Controller with Bidirectional Circuit Breaker...............................................................................34
L, LT, LTC, LTM, Linear Technology, Burst Mode, Dust, Dust Networks, Eterna, FilterCAD, LDO+, Linduino, Linear Express, LTPoE++, LTpowerCAD, LTpowerPlanner, LTpowerPlay, LTspice, Manager-onChip, OPTI-LOOP, Over-The-Top, PolyPhase, Silent Switcher, SmartMesh, SWITCHER+, TimerBlox, µModule, the Linear logo and the Dust Networks logo are registered trademarks of Analog Devices,
Inc. Access Point Mote, Adaptive Power, Anyside, AP Mote, AutoResonant, Bat-Track, BodeCAD, C-Load, ClockWizard, Direct Flux Limit, DirectSense, Easy Drive, EZ204Sync, EZParallelSync, EZSync,
FilterView, FracNWizard, isoSPI, LinearView, LTBiCMOS, LTC6951Wizard, LTCMOS, LTP, Micropower SwitcherCAD, Mote-on-Chip, Multimode Dimming, No Latency ∆∑, No Latency Delta-Sigma, No
RSENSE, Operational Filter, PanelProtect, ParallelSync, PLLWizard, PowerPath, PowerSOT, PScope, QuikEval, RH DICE Inside, RH MILDICE Inside, SafeSlot, SmartMesh IP, SNEAK-A-BIT, SoftSpan, Stage
Shedding, Super Burst, ThinSOT, Triple Mode, True Color PWM, UltraFast, Virtual Remote Sense, Virtual Remote Sensing, VLDO, VManager and VRS are trademarks of Analog Devices, Inc. All other
trademarks are the property of their respective owners.
Amplifiers
LT1997-3
Precision, Wide Voltage Range
Gain Selectable Amplifier
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DESCRIPTION
The LT1997-3 combines a precision operational amplifier with
highly-matched resistors to form a one-chip solution for accurately
amplifying voltages. Gains from –13 to +14 with accuracy of 0.006%
(60ppm) can be achieved using no external components. The
LT1997-3 is particularly well suited for use as a difference amplifier,
where the excellent resistor matching results in a common mode
rejection ratio of greater than 91dB.
The amplifier features a 60μV maximum input offset voltage and a
–3dB bandwidth of 1.1MHz (Gain = 1). The LT1997-3 operates from
any supply voltage from 3.3V to 50V and draws only 350μA supply
current. The output typically swings to within 100mV of either supply
rail.
The resistors maintain their excellent matching over temperature;
the matching temperature coefficient is guaranteed less than
1ppm/°C. The resistors are extremely linear with voltage, resulting in
a gain nonlinearity of less than 2ppm.
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APPLICATIONS
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The LT1997-3 is fully specified at 5V and ±15V supplies and from
–40°C to 125°C. The device is available in space saving 16-lead
MSOP and 4mm × 4mm DFN14 packages.
High Side or Low Side Current Sensing
Bidirectional Wide Common Mode Range Current Sensing
High Voltage to Low Voltage Level Translation
Industrial Data Acquisition Front Ends
Replacement for Isolation Circuits
Differential to Single-Ended Conversion
Typical Distribution of CMRR (G = 1)
1200
VS = ±15V
VCM = –28V TO +26.5V
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FEATURES
Pin Configurable as a Difference Amplifier, Inverting
Amplifier or Noninverting Amplifier
91dB Minimum DC CMRR (Gain = 1)
65dB AC CMRR (at 100kHz, Gain = 1)
0.006% (60ppm) Maximum Gain Error (Gain = 1)
1ppm/°C Maximum Gain Error Drift
2ppm Maximum Gain Nonlinearity
±160V Common Mode Voltage Range
Wide Supply Voltage Range: 3.3V to 50V
Rail-to-Rail Output
350µA Supply Current
60µV Maximum Op Amp Offset Voltage
1.1MHz, –3dB Bandwidth (Gain = 1)
Low Power Shutdown: 20µA
Space-Saving MSOP and DFN Packages
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16 –INA
+INB 3
14 –INB
+INC
REF1
REF2
V–
5
6
7
8
12
11
10
9
NUMBER OF UNITS
TOP VIEW
+INA 1
–INC
V+
SHDN
OUT
MS PACKAGE
VARIATION: MS16 (12)
16-LEAD PLASTIC MSOP
4625 UNITS
FROM 3 RUNS
800
600
400
200
0
–30
LT1997IMS-3
LT1997HMS-3
–20
–10
0
10
CMRR (µV/V = ppm)
20
30
19973 TA01b
Gain = 1 Difference Amplifier
TOP VIEW
+INA
14 –INA
1
VSOURCE = –28V TO 26.5V
15V
V+ LT1997-3
–INA –INB –INC
+INB
3
NC
4
12 –INB
+INC
5
SHDN
6
10 –INC
9 V+
REF
7
8
15
V–
2.5k
11 NC
OUT
7.5k
RSENSE
1Ω
22.5k
–
22.5k
+
OUT
7.5k
DF PACKAGE
14(12)-LEAD (4mm × 4mm) PLASTIC DFN
LT1997IDF-3
LT1997HDF-3
RC
1Ω
22.5k
2.5k
LOAD
+INA +INB +INC
45k
REF2
45k
REF1
VOUT = ±1mV/mA
SHDN V–
–15V
19973 TA01a
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Amplifiers
LTC2063
2µA Supply Current, Low IB,
Zero-Drift Operational Amplifier
FEATURES
DESCRIPTION
Low Supply Current: 2μA Maximum
nn Offset Voltage: 5μV Maximum
nn Offset Voltage Drift: 0.02μV/°C Maximum
nn Input Bias Current
nn 3pA Typical
nn 30pA Maximum, –40°C to 85°C
nn 100pA Maximum, –40°C to 125°C
nn Integrated EMI Filter (114dB Rejection at 1.8GHz)
nn Shutdown Current: 170nA Maximum
nn Rail-to-Rail Input and Output
nn 1.7V to 5.25V Operating Supply Range
nn A
VOL: 140dB Typical
nn Low Charge Power-Up for Duty Cycled Applications
nn Specified Temperature Ranges:
nn –40°C to 85°C
nn –40°C to 125°C
nn 6-Lead SC70, 5-Lead TSOT-23 Packages
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APPLICATIONS
Signal Conditioning in Wireless Mesh Networks
Portable Instrumentation Systems
nn Low Power Sensor Conditioning
nn Gas Detection
nn Temperature Measurement
nn Medical Instrumentation
nn Energy Harvesting Applications
nn Low Power Current Sensing
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The LTC2063 is a single low power, zero-drift, 20kHz amplifier. The
LTC2063 enables high resolution measurement at extremely low
power levels.
Typical supply current is 1.4µA with a maximum of 2µA. The
available shutdown mode has been optimized to minimize power
consumption in duty-cycled applications and features low charge
loss during power-up, reducing total system power.
The LTC2063’s self-calibrating circuitry results in very low input
offset (5µV max) and offset drift (0.02µV/°C). The maximum input
bias current is only 20pA and does not exceed 100pA over the full
specified temperature range. The extremely low input bias current of
the LTC2063 allows the use of high value power-saving resistors in
the feedback network.
With its ultralow quiescent current and outstanding precision, the
LTC2063 can serve as a signal chain building block in portable,
energy harvesting and wireless sensor applications.
The LTC2063 is available in 6-lead SC70 and 5-lead TSOT-23
packages and is fully specified over the –40°C to 85°C and –40°C to
125°C temperature ranges.
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Duty Cycle Lowers System Power
CHARGE
20nC/DIV
TOP VIEW
5 V+
OUT 1
+
–
V– 2
+IN 3
VOUT
1V/DIV
VSHDN
2V/DIV
4 –IN
2063 TA01b
40ms/DIV
S5
S5 PACKAGE
PACKAGE
5-LEAD
5-LEAD PLASTIC
PLASTIC TSOT-23
TSOT-23
LTC2063IS5
LTC2063HS5
Micropower Precision Oxygen Sensor
10M
0.1%
TOP VIEW
6 V+
+IN 1
V– 2
+
–
–IN 3
5 SHDN
4 OUT
OXYGEN SENSOR
CITY TECHNOLOGY
40XV
SC6
PACKAGE
S6 PACKAGE
6-LEAD PLASTIC
PLASTIC SC70
SC70
6-LEAD
100k
0.1%
100Ω
0.1%
LTC2063ISC6
LTC2063HSC6
www.citytech.com
2
100k
0.1%
2063 TA01
1.8V
–
LTC2063
+
VOUT = 1V IN AIR
ISUPPLY = 1.4µA (ENABLED)
90nA (SHUTDOWN)
VSHDN
Amplifiers
LTC6258/LTC6259/LTC6260
1.3MHz, 20µA Power Efficient
Rail-to-Rail I/O Op Amps
FEATURES
DESCRIPTION
The LTC6258/LTC6259/LTC6260 are single/dual/quad operational
amplifiers with low noise, low power, low supply voltage, and railto-rail inputs and outputs. They are unity gain stable with or without
capacitive loads. They feature 1.3MHz gain-bandwidth product,
0.24V/µs slew rate while consuming only 20µA of supply current per
amplifier operating on supply voltages ranging from 1.8V to 5.25V.
The combination of low supply current, low supply voltage, high
gain bandwidth product and low noise makes the LTC6258 family
unique among rail-to-rail input/output op amps with similar supply
current. These operational amplifiers are ideal for power efficient
applications.
Gain Bandwidth Product: 1.3MHz
nn Low Quiescent Current: 20µA
nn C-Load™ Op Amp Drives all Capacitive Loads
nn Offset Voltage: 400µV Maximum
nn Rail-to-Rail Input and Output
nn Supply Voltage Range: 1.8V to 5.25V
nn EMI Rejection Ratio: 45dB at 1GHz
nn Input Bias Current: 75nA Maximum
nn CMRR/PSRR: 95dB/90dB
nn Shutdown Current: 7µA Maximum
nn Operating Temperature Range: –40°C to 125°C
nn Single in 6-Lead TSOT-23, 2mm × 2mm DFN Packages
nn Dual in 8-Lead MS8, MS10, TS0T-23, 2mm × 2mm DFN
Packages
nn Quad in MS16 Package
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For applications that require power-down, the LTC6258 in
2mm × 2mm DFN and LTC6259 MS10 packages respectively
offer shutdown which reduces the current consumption to 7µA
maximum.
The LTC6258 family can be used as plug-in replacements for many
commercially available op amps to reduce power and improve
input/output range and performance.
APPLICATIONS
Micropower Active Filters
Portable Instrumentation
nn Battery or Solar Powered Systems
nn Automotive Electronics
nn
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TOP VIEW
OUTA 1
6 OUT
7
V–
–INA 2
5 –IN
+INA 3
4 SHDN
V– 4
DC PACKAGE
DC PACKAGE
6-LEAD (2mm × 2mm × 0.8mm) PLASTIC DFN
6-LEAD (2mm × 2mm × 0.8mm)
PLASTIC DFN
5000
7 OUTB
4500
6 –INB
4000
5 +INB
3500
DC PACKAGE
PACKAGE
DC
8-LEAD
(2mm (2mm
× 2mm××2mm
0.8mm)
PLASTIC DFN
8-LEAD
× 0.8mm)
PLASTIC DFN
LTC6258IDC
LTC6258HDC
LTC6259IDC
LTC6259HDC
TOP VIEW
OUTA
–INA
+INA
V–
+
OUT 1
6 V
+
–
5 SHDN
+IN 3
4 –IN
1
2
3
4
–
+
TOP VIEW
V+
OUTB
–INB
+INB
OUTA
–INA
+INA
V–
1
2
3
4
–
+
8
7
6
5
3000
2500
2000
S6 PACKAGE
TS8 PACKAGE
PACKAGE
TS8
8-LEAD PLASTIC
PLASTIC TSOT-23
TSOT-23
8-LEAD
MS8
MS8 PACKAGE
PACKAGE
8-LEAD PLASTIC
8-LEAD
PLASTICMSOP
MSOP
LTC6258IS6
LTC6258HS6
LTC6259ITS8
LTC6259HTS8
LTC6259IMS8
LTC6259HMS8
1000
–
+
+
–
1
2
3
4
5
10
9
8
7
6
V
OUTB
–INB
+INB
SHDNB
–
+
+
–
1
10
FREQUENCY (kHz)
100
Low Noise Reference
+
–
OUTA
–INA
+INA
V–
SHDNA
+
1
2
3
4
5
6
7
8
0.1
6258960 TA01a
TOP VIEW
OUTA
–INA
+INA
V+
+INB
–INB
OUTB
NC
* 2.7K + 22µF FILTER
1500
0
0.01
V+
OUTB
–INB
+INB
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
6-LEAD PLASTIC TSOT-23
TOP VIEW
OP AMP, 44µF CLOAD
OP AMP
FILTERED REFERENCE
REFERENCE OUTPUT
INSTRUMENT ONLY
500
8
7
6
5
+
–
TOP VIEW
V– 2
9
V–
8 V
+
–
V– 3
+
NOISE DENSITY (nV/√Hz)
V+ 1
+IN 2
Reference Buffer Noise Density
TOP VIEW
+
–
16
15
14
13
12
11
10
9
MS PACKAGE
MS
PACKAGE
10-LEAD PLASTIC MSOP
10-LEAD PLASTIC MSOP
MS PACKAGE
MS
PACKAGE
16-LEAD PLASTIC MSOP
16-LEAD PLASTIC MSOP
LTC6259IMS
LTC6259HMS
LTC6260IMS
LTC6260HMS
OUTD
–IND
+IND
V–
+INC
–INC
OUTC
NC
5V
V+
LT6656
IN
OUT
GND
–
+
RIN1
2.7k
22µF
OUT
LTC6258
22µF
22µF
6258960 TA01
3
Amplifiers
LTC6419
Dual 10GHz GBW, 1.1nV/√Hz
Differential Amplifier/ADC Driver
FEATURES
DESCRIPTION
10GHz Gain-Bandwidth Product
nn 85dB SFDR at 100MHz, 2V
P-P
nn 1.1nV/√Hz Input Noise Density
nn Channel Separation 95dB at 100MHz
nn Input Range Includes Ground
nn External Resistors Set Gain (Min 1V/V)
nn 3300V/µs Differential Slew Rate
nn 52mA Supply Current (Per Amplifier)
nn 2.7V to 5.25V Supply Voltage Range
nn Fully Differential Input and Output
nn Adjustable Output Common Mode Voltage
nn Low Power Shutdown
nn Small 20-Lead 4mm × 3mm × 0.75mm LQFN Package
The LTC6419 is a dual very high speed, low distortion, differential
amplifier. Its input common mode range includes ground, so that
a ground-referenced single-ended or differential input signal can
be DC-coupled, level-shifted, and converted to drive an ADC
differentially.
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The gain and feedback resistors are external, so that the exact
gain and frequency response can be tailored to each application.
For example, the amplifier could be externally compensated in a
no-overshoot configuration, which is desired in certain time-domain
applications.
The LTC6419 is stable in a differential gain of 1. This allows for
low output noise in applications where gain is not desired. Each
amplifier draws 52mA of supply current and has an independent
shutdown pin which reduces current consumption to 100µA per
amplifier.
APPLICATIONS
Broadband I/Q Amplifiers
nn Dual Differential ADC Driver
nn High Speed Data Acquisition Cards
nn Automated Test Equipment
nn Time Domain Reflectometry
nn Communications Receivers
nn
The LTC6419 is available in a compact 4mm × 3mm 20‑lead LQFN
package and operates over a –40°C to 125°C temperature range.
1/2 LTC6419 Driving 1/4 LTC2175-14 ADC, fIN = 45MHz,
–1dBFS, fS = 125MHz,32768-Point FFT
VOCMA
–OUTA
19
18
17
1
3
SHDNB
4
+FBB
5
–INB
6
21
V–
21
V–
21
V–
7
8
9
10
–OUTB
SHDNA
21
V–
–FBB
2
VOCMB
+FBA
–60
16
+OUTA
15
V+A
14
V–
13
V–
–110
12
V+B
–120
11
+OUTB
LQFN PACKAGE
PACKAGE
LQFN
20-LEAD (4mm
(4mm ×
20-LEAD
× 3mm
3mm ×× 0.75mm)
0.75mm)
LTC6419IV
LTC6419HV
AMPLITUDE (dBFS)
–FBA
20
+INB
–INA
+INA
TOP VIEW
0
VS = 3.3V
–10 V
OUTDIFF = 1.8V P-P
–20 HD2 = –86.8dBc
HD3 = –86.5dBc
–30
SFDR = 86.5dB
–40 SNR = 71.8dB
–50
–70
–80
–90
–100
0
10
20
30
40
FREQUENCY (MHz)
50
6419 TA01b
DC-Coupled Interface from a Ground-Referenced
Single-Ended Input to an LTC2175-14 ADC
1.3pF
VIN
150Ω
150Ω
1.8V
39pF
3.3V
– +
VOCM = 0.9V
1/2 LTC6419
+ –
33.2Ω
10Ω
33.2Ω
10Ω
39pF
150Ω
AIN+
VDD
1/4 LTC2175-14 ADC
AIN–
GND
150Ω
6419 TA01
1.3pF
4
60
Amplifiers
LTC6432-15
100kHz to 1.4GHz Differential
ADC Driver/IF Amplifier
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DESCRIPTION
The LTC6432-15 is an ultrahigh dynamic range differential gain
block amplifier designed to drive high resolution, high speed
ADCs. It offers a full GHz of data bandwidth for complex spectrally
efficient modulations schemes or where resistance to blockers is
critical. This unique device can simultaneously achieve low noise,
incomparable linearity and flat gain over the 100kHz to 1GHz band.
Unlike wideband GaAs PHEMTs, MESFETs and GaN FETs, this
SiGe based amplifier exhibits low 1/f noise and can be used down
to 100kHz.
The LTC6432-15 is designed for ease of use requiring a minimum
of support components. Impedance matching, temperature
compensation and bias control are handled internally to ensure
consistent performance over environmental changes.
All A-grade LTC6432-15 devices are tested and guaranteed for OIP3
at 150MHz. The LTC6432-15 is housed in a 4mm × 4mm, 24L, QFN
package with an exposed pad for thermal management and low
inductance.
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APPLICATIONS
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FEATURES
100kHz to 1400MHz Bandwidth
54.4dBm OIP3 at 1MHz into a 100Ω Diff Load
48.0dBm OIP3 at 150MHz into a 100Ω Diff Load
Up to 15dBm Output Power
NF = 3.0dB at 240MHz
Low 1/f Noise Corner
User Defined Low Frequency
15.2dB Fixed Power Gain
A-Grade 100% OIP3 Tested at 150MHz
0.8 nV/√Hz Total Input Noise
>2.75VP-P Linear Output Swing
P1dB = 22.5dBm
Insensitive to VCC Variation
Input/Output Internally Matched to 100Ω Differential
Single 5V Supply
DC Power = 850mW
Unconditionally Stable
For a single-ended 50Ω IF gain block with similar performance, see
the related LTC6433-15.
Differential 1GHz Bandwidth ADC Driver
Wideband Test Instrument Amplifier
Differential IF Amplifier
50Ω/75Ω Balanced IF Amplifier
OIP3 and S21 vs Frequency
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OUTPUT INTERCEPT PT. OIP3 (dBm)
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+FDBK
DNC
DNC
VCC
GND
+IN
24 23 22 21 20 19
DNC 1
18 +OUT
DNC 2
17 GND
DNC 3
16 DNC
25
GND
DNC 4
14 DNC
NFILT1 6
13 –OUT
30
50
40
VCC = 5V
POUT = 4dBm/TONE
ZIN = Z OUT = 100Ω DIFF
TCASE = 30°C
30
20
20
10
10
1
10
100
FREQUENCY (MHz)
1k
0
643215 TA01b
350Ω
–FDBK
DNC
DNC
9 10 11 12
VCC
–IN
8
GND
7
40
0
0.1
15 T_DIODE
NFILT2 5
50
GAIN S21 (dB)
TOP VIEW
60
OIP3
S21
1µF
UF PACKAGE
PACKAGE
UF
24-LEAD(4mm
(4mm ×× 4mm)
4mm) PLASTIC
QFN
24-LEAD
PLASTIC
QFN
1µF
LTC6432AIUF-15
LTC6432BIUF-15
1µF
+IN GND
INPUT
1:2
• •
+OUT
DNC
GND
DNC
DNC
DNC
LTC6432-15
250Ω
240nH
280Ω
1:1
BALUN
T_DIODE
DNC
NFILT2
1µF
• •
1µF
VCC DNC DNC +FDBK
DNC
470µH
1µF
–OUT
+IN
+OUT
LP FILTER
–IN
–OUT
+IN
16-BIT ADC
–IN
NFILT1
1µF
1µF
–IN GND
VCC DNC DNC –FDBK
1µF
350Ω
240nH
280Ω
470µH
250Ω
1µF
1nF
643215 TA01a
1µF
VCC = 5V
5
Data Converters
LTC2320-12
Octal, 12-Bit + Sign,
1.5Msps/Ch Simultaneous Sampling ADC
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The LTC2320-12 is a low noise, high speed octal 12 bit + sign
successive approximation register (SAR) ADC with differential
inputs and wide input common mode range. Operating from a
single 3.3V or 5V supply, the LTC2320 12 has an 8VP-P differential
input range, making it ideal for applications which require a wide
dynamic range with high common mode rejection. The LTC232012 achieves ±0.25LSB INL typical, no missing codes at 12 bits
and 77dB SNR.
The LTC2320-12 has an onboard low drift (20ppm/°C max)
2.048V or 4.096V temperature-compensated reference. The
LTC2320-12 also has a high speed SPI-compatible serial interface
that supports CMOS or LVDS. The fast 1.5Msps per channel
throughput with no latency makes the LTC2320-12 ideally suited
for a wide variety of high speed applications. The LTC2320-12
dissipates only 20mW per channel and offers nap and sleep
modes to reduce the power consumption to 26μW for further
power savings during inactive periods.
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High Speed Data Acquisition Systems
Communications
Remote Data Acquisition
Imaging
Optical Networking
Automotive
Multiphase Motor Control
32k Point FFT fSMPL = 1.5Msps,
fIN = 500kHz
0
SCK/SCK+
DNC/SCK–
VDD
REFOUT4
GND
AIN8–
AIN8+
GND
AIN7–
AIN7+
VDD
TOP VIEW
REFBUFEN
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AMPLITUDE (dBFS)
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APPLICATIONS
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DESCRIPTION
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FEATURES
1.5Msps/Ch Throughput Rate
Eight Simultaneously Sampling Channels
Guaranteed 12-Bit, No Missing Codes
8VP-P Differential Inputs with Wide Input
Common Mode Range
77dB SNR (Typ) at fIN = 500kHz
–90dB THD (Typ) at fIN = 500kHz
Guaranteed Operation to 125°C
Single 3.3V or 5V Supply
Low Drift (20ppm/°C Max) 2.048V or 4.096V
Internal Reference
1.8V to 2.5V I/O Voltages
CMOS or LVDS SPI-Compatible Serial I/O
Power Dissipation 20mW/Ch (Typ)
Small 52-Lead (7mm × 8mm) QFN Package
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52 51 50 49 48 47 46 45 44 43 42 41
AIN6– 1
40 SDO8/SDOD–
AIN6+ 2
39 SDO7/SDOD+
GND 3
38 GND
–
37 OVDD
AIN5
4
AIN5+ 5
36 SDO6/SDOC–
REFOUT3 6
35 SDO5/SDOC+
GND 7
34
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GND
REF 8
AIN4+ 11
30 SDO4/SDOB–
GND 12
29 SDO3/SDOB+
AIN3– 13
28 SDO2/SDOA–
AIN3+ 14
27 SDO1/SDOA+
–100
0
TRUE DIFFERENTIAL INPUTS
NO CONFIGURATION REQUIRED
IN+, IN –
VDD
ARBITRARY
0V
GND
CMOS/LVDS
CNV
SDR/DDR
VDD
REFOUT1
AIN1+
AIN1–
GND
AIN2+
VDD
AIN2–
LTC2320CUKG-12
LTC2320IUKG-12
LTC2320HUKG-12
VDD
DIFFERENTIAL
VDD
0V
VDD
AIN2+
S/H
AIN2–
AIN4+
S/H
AIN4–
0V
BIPOLAR
AIN1+
S/H
AIN1–
AIN3+
S/H
AIN3–
UNIPOLAR
0V
AIN5+
S/H
AIN5–
AIN6+
S/H
AIN6–
AIN7+
S/H
AIN7–
AIN8+
S/H
AIN8–
REF
EIGHT SIMULTANEOUS
SAMPLING CHANNELS
6
0.2 0.3 0.4 0.5
FREQUENCY (MHz)
0.6
0.7
232012 TA01b
10µF
15 16 17 18 19 20 21 22 23 24 25 26
UKG PACKAGE
52-LEAD (7mm × 8mm) PLASTIC QFN
0.1
1µF
1.8V TO 2.5V
3.3V OR 5V
32 GND
31 OVDD
–80
–140
CLKOUTEN/CLKOUT –
AIN4– 10
–60
–120
33 CLKOUT/CLKOUT+
REFOUT2 9
SNR = 78.4dB
THD = –90.9dB
–20 SINAD = 78.2dB
SFDR = 95.2dB
–40
VDD
GND
GND
OVDD
MUX
12-BIT
+ SIGN
SAR ADC
CMOS/LVDS
SDR/DDR
REFBUFEN
MUX
12-BIT
+ SIGN
SAR ADC
SDO1
SDO2
SDO3
SDO4
SDO5
SDO6
SDO7
SDO8
CLKOUT
SCK
LTC2320-12
MUX
12-BIT
+ SIGN
SAR ADC
CNV
MUX
12-BIT
+ SIGN
SAR ADC
REFOUT1 REFOUT2 REFOUT3 REFOUT4
232012 TA01a
1µF
10µF
10µF
10µF
10µF
SAMPLE
CLOCK
Data Converters
LTC2320-14
Octal, 14-Bit + Sign,
1.5Msps/Ch Simultaneous Sampling ADC
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DESCRIPTION
The LTC2320-14 is a low noise, high speed octal 14 bit + sign
successive approximation register (SAR) ADC with differential inputs
and wide input common mode range. Operating from a single 3.3V
or 5V supply, the LTC2320-14 has an 8VP-P differential input range,
making it ideal for applications which require a wide dynamic range
with high common mode rejection. The LTC2320-14 achieves
±1LSB INL typical, no missing codes at 14 bits and 81dB SNR.
The LTC2320-14 has an onboard low drift (20ppm/°C max) 2.048V
or 4.096V temperature-compensated reference. The LTC2320-14
also has a high speed SPI-compatible serial interface that supports
CMOS or LVDS. The fast 1.5Msps per channel throughput with no
latency makes the LTC2320-14 ideally suited for a wide variety of
high speed applications. The LTC2320-14 dissipates only 20mW
per channel and offers nap and sleep modes to reduce the power
consumption to 26μW for further power savings during inactive
periods.
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APPLICATIONS
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High Speed Data Acquisition Systems
Communications
Optical Networking
Multiphase Motor Control
32k Point FFT fSMPL = 1.5Msps,
fIN = 500kHz
SMPL
IN
0
AMPLITUDE (dBFS)
SCK/SCK+
DNC/SCK–
VDD
REFOUT4
GND
AIN8–
AIN8+
GND
AIN7–
AIN7+
VDD
TOP VIEW
REFBUFEN
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FEATURES
1.5Msps/Ch Throughput Rate
Eight Simultaneously Sampling Channels
Guaranteed 14-Bit, No Missing Codes
8VP-P Differential Inputs with Wide Input
Common Mode Range
81dB SNR (Typ) at fIN = 500kHz
–90dB THD (Typ) at fIN = 500kHz
Guaranteed Operation to 125°C
Single 3.3V or 5V Supply
Low Drift (20ppm/°C Max) 2.048V or 4.096V
Internal Reference
1.8V to 2.5V I/O Voltages
CMOS or LVDS SPI-Compatible Serial I/O
Power Dissipation 20mW/Ch (Typ)
Small 52-Lead (7mm × 8mm) QFN Package
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52 51 50 49 48 47 46 45 44 43 42 41
AIN6– 1
40 SDO8/SDOD–
+
39 SDO7/SDOD+
AIN6
2
GND 3
38 GND
–
37 OVDD
AIN5
4
AIN5+ 5
36 SDO6/SDOC–
REFOUT3 6
35 SDO5/SDOC+
GND 7
–60
–80
–100
–120
–140
AIN4– 10
31 OVDD
AIN4+ 11
30 SDO4/SDOB–
GND 12
29 SDO3/SDOB+
AIN3– 13
28 SDO2/SDOA–
AIN3+ 14
27 SDO1/SDOA+
GND
CMOS/LVDS
CNV
SDR/DDR
VDD
REFOUT1
AIN1+
AIN1–
GND
UKG PACKAGE
52-LEAD (7mm × 8mm) PLASTIC QFN
LTC2320CUKG-14
LTC2320IUKG-14
LTC2320HUKG-14
0.6
0.7
10µF
1µF
1.8V TO 2.5V
3.3V OR 5V
TRUE DIFFERENTIAL INPUTS
NO CONFIGURATION REQUIRED
IN+, IN –
VDD
ARBITRARY
VDD
DIFFERENTIAL
0V
VDD
0V
VDD
AIN2+
S/H
AIN2–
AIN4+
S/H
AIN4–
0V
BIPOLAR
AIN1+
S/H
AIN1–
AIN3+
S/H
AIN3–
15 16 17 18 19 20 21 22 23 24 25 26
AIN2+
0.2 0.3 0.4 0.5
FREQUENCY (MHz)
232014 TA01b
32 GND
VDD
0.1
33 CLKOUT/CLKOUT+
REFOUT2 9
AIN2–
0
34 CLKOUTEN/CLKOUT –
53
GND
REF 8
SNR = 81.1dB
THD = –90.2dB
–20 SINAD = 80.8dB
SFDR = 94.7dB
–40
UNIPOLAR
0V
AIN5+
S/H
AIN5–
AIN6+
S/H
AIN6–
AIN7+
S/H
AIN7–
AIN8+
S/H
AIN8–
REF
EIGHT SIMULTANEOUS
SAMPLING CHANNELS
VDD
GND
GND
OVDD
MUX
14-BIT
+ SIGN
SAR ADC
CMOS/LVDS
SDR/DDR
REFBUFEN
MUX
14-BIT
+ SIGN
SAR ADC
SDO1
SDO2
SDO3
SDO4
SDO5
SDO6
SDO7
SDO8
CLKOUT
SCK
LTC2320-14
MUX
14-BIT
+ SIGN
SAR ADC
CNV
MUX
SAMPLE
CLOCK
14-BIT
+ SIGN
SAR ADC
REFOUT1 REFOUT2 REFOUT3 REFOUT4
232014 TA01a
1µF
10µF
10µF
10µF
10µF
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Data Converters
LTC2325-12
Quad, 12-Bit + Sign,
5Msps/Ch Simultaneous Sampling ADC
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The LTC2325-12 has an onboard low drift (20ppm/°C max) 2.048V
or 4.096V temperature-compensated reference. The LTC2325-12
also has a high speed SPI-compatible serial interface that supports
CMOS or LVDS. The fast 5Msps per channel throughput with one
cycle latency makes the LTC2325-12 ideally suited for a wide variety
of high speed applications. The LTC2325-12 dissipates only 45mW
per channel and offers nap and sleep modes to reduce the power
consumption to 26μW for further power savings during inactive
periods.
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APPLICATIONS
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High Speed Data Acquisition Systems
Communications
Optical Networking
Multiphase Motor Control
32k Point FFT fSMPL = 5Msps,
fIN = 2.2MHz
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The LTC2325-12 is a low noise, high speed quad 12 bit + sign
successive approximation register (SAR) ADC with differential inputs
and wide input common mode range. Operating from a single 3.3V
or 5V supply, the LTC2325 12 has an 8VP-P differential input range,
making it ideal for applications which require a wide dynamic range
with high common mode rejection. The LTC2325 12 achieves
±0.5LSB INL typical, no missing codes at 12 bits and 77dB SNR.
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DESCRIPTION
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FEATURES
5Msps/Ch Throughput Rate
Four Simultaneously Sampling Channels
Guaranteed 12-Bit, No Missing Codes
8VP-P Differential Inputs with Wide Input
Common Mode Range
77dB SNR (Typ) at fIN = 2.2MHz
–86dB THD (Typ) at fIN = 2.2MHz
Guaranteed Operation to 125°C
Single 3.3V or 5V Supply
Low Drift (20ppm/°C Max) 2.048V or 4.096V
Internal Reference
1.8V to 2.5V I/O Voltages
CMOS or LVDS SPI-Compatible Serial I/O
Power Dissipation 45mW/Ch (Typ)
Small 52-Lead (7mm × 8mm) QFN Package
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SNR = 77.1dB
THD = –85.7dB
–20 SINAD = 76.2dB
SFDR = 90.3dB
–40
AMPLITUDE (dBFS)
SCK/SCK+
DNC/SCK–
REFBUFEN
VDD
REFOUT4
GND
NC
NC
GND
NC
NC
VDD
TOP VIEW
52 51 50 49 48 47 46 45 44 43 42 41
AIN4– 1
+
AIN4
40 DNC/SDOD–
2
39
SDO4/SDOD+
GND 3
38 GND
AIN3– 4
37 OVDD
+
AIN3
5
36
–60
–80
–100
–120
DNC/SDOC–
–140
35 SDO3/SDOC+
REFOUT3 6
GND 7
34 CLKOUTEN/CLKOUT
53
GND
REF 8
–
0
0.5
1
1.5
FREQUENCY (MHz)
2
2.5
232512 TA01b
33 CLKOUT/CLKOUT+
32 GND
REFOUT2 9
AIN2– 10
31 OVDD
AIN2+ 11
30 DNC/SDOB–
GND 12
29 SDO2/SDOB+
AIN1– 13
28 DNC/SDOA–
AIN1+ 14
27 SDO1/SDOA+
VDD
ARBITRARY
0V
UKG PACKAGE
52-LEAD (7mm × 8mm) PLASTIC QFN
LTC2325CUKG-12
LTC2325IUKG-12
LTC2325HUKG-12
10µF
VDD
DIFFERENTIAL
0V
1µF
3.3V OR 5V
IN+, IN –
GND
CMOS/LVDS
CNV
SDR/DDR
REFOUT1
VDD
NC
NC
GND
NC
NC
VDD
15 16 17 18 19 20 21 22 23 24 25 26
TRUE DIFFERENTIAL INPUTS
NO CONFIGURATION REQUIRED
1.8V TO 2.5V
VDD
GND
AIN1+
S/H
AIN1–
12-BIT
+SIGN
SAR ADC
AIN2+
S/H
AIN2–
12-BIT
+SIGN
SAR ADC
LTC2325-12
VDD
0V
BIPOLAR
VDD
UNIPOLAR
0V
AIN3+
S/H
AIN3–
12-BIT
+SIGN
SAR ADC
AIN4+
S/H
AIN4–
12-BIT
+SIGN
SAR ADC
REF
FOUR SIMULTANEOUS
SAMPLING CHANNELS
GND
OVDD
CMOS/LVDS
SDR/DDR
REFBUFEN
SDO1
SDO2
SDO3
SDO4
CLKOUT
SCK
CNV
SAMPLE
CLOCK
REFOUT1 REFOUT2 REFOUT3 REFOUT4
1µF
10µF
10µF
10µF
10µF
232512 TA01a
8
Data Converters
LTC2325-14
Quad, 14-Bit + Sign,
5Msps/Ch Simultaneous Sampling ADC
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The LTC2325-14 is a low noise, high speed quad 14 bit + sign
successive approximation register (SAR) ADC with differential inputs
and wide input common mode range. Operating from a single 3.3V
or 5V supply, the LTC2325 14 has an 8VP-P differential input range,
making it ideal for applications which require a wide dynamic range
with high common mode rejection. The LTC2325-14 achieves
±1LSB INL typical, no missing codes at 14 bits and 81dB SNR.
The LTC2325-14 has an onboard low drift (20ppm/°C max) 2.048V
or 4.096V temperature-compensated reference. The LTC2325-14
also has a high speed SPI-compatible serial interface that supports
CMOS or LVDS. The fast 5Msps per channel throughput with one
cycle latency makes the LTC2325-14 ideally suited for a wide variety
of high speed applications. The LTC2325-14 dissipates only 45mW
per channel and offers nap and sleep modes to reduce the power
consumption to 26μW for further power savings during inactive
periods.
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APPLICATIONS
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High Speed Data Acquisition Systems
Communications
Optical Networking
Multiphase Motor Control
32k Point FFT fSMPL = 5Msps,
fIN = 2.2MHz
0
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DESCRIPTION
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FEATURES
5Msps/Ch Throughput Rate
Four Simultaneously Sampling Channels
Guaranteed 14-Bit, No Missing Codes
8VP-P Differential Inputs with Wide Input
Common Mode Range
81dB SNR (Typ) at fIN = 2.2MHz
–88dB THD (Typ) at fIN = 2.2MHz
Guaranteed Operation to 125°C
Single 3.3V or 5V Supply
Low Drift (20ppm/°C Max) 2.048V or 4.096V
Internal Reference
1.8V to 2.5V I/O Voltages
CMOS or LVDS SPI-Compatible Serial I/O
Power Dissipation 45mW/Ch (Typ)
Small 52-Lead (7mm × 8mm) QFN Package
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AMPLITUDE (dBFS)
SCK/SCK+
DNC/SCK–
REFBUFEN
VDD
REFOUT4
GND
NC
NC
GND
NC
NC
VDD
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TOP VIEW
52 51 50 49 48 47 46 45 44 43 42 41
–
AIN4
1
40
AIN4+ 2
DNC/SDOD–
39 SDO4/SDOD+
GND 3
38 GND
AIN3– 4
37 OVDD
AIN3+ 5
36 DNC/SDOC–
GND 7
–80
–100
–140
34 CLKOUTEN/CLKOUT –
53
GND
REF 8
–60
–120
35 SDO3/SDOC+
REFOUT3 6
SNR = 81.3dB
THD = –87.2dB
–20 SINAD = 80.5dB
SFDR = 90.3dB
–40
33
CLKOUT/CLKOUT+
0
0.5
1
1.5
FREQUENCY (MHz)
2
2.5
232514 TA01b
32 GND
REFOUT2 9
AIN2– 10
31 OVDD
AIN2+ 11
30 DNC/SDOB–
GND 12
29 SDO2/SDOB+
–
AIN1 13
28 DNC/SDOA–
TRUE DIFFERENTIAL INPUTS
NO CONFIGURATION REQUIRED
AIN1+ 14
27 SDO1/SDOA+
IN+, IN –
UKG PACKAGE
52-LEAD (7mm × 8mm) PLASTIC QFN
LTC2325CUKG-14
LTC2325IUKG-14
LTC2325HUKG-14
GND
CMOS/LVDS
CNV
SDR/DDR
REFOUT1
VDD
NC
NC
GND
NC
NC
VDD
15 16 17 18 19 20 21 22 23 24 25 26
VDD
ARBITRARY
0V
VDD
DIFFERENTIAL
0V
10µF
1µF
3.3V OR 5V
1.8V TO 2.5V
VDD
GND
AIN1+
S/H
AIN1–
14-BIT
+SIGN
SAR ADC
AIN2+
S/H
AIN2–
14-BIT
+SIGN
SAR ADC
LTC2325-14
VDD
0V
BIPOLAR
VDD
UNIPOLAR
0V
AIN3+
S/H
AIN3–
14-BIT
+SIGN
SAR ADC
AIN4+
S/H
AIN4–
14-BIT
+SIGN
SAR ADC
REF
FOUR SIMULTANEOUS
SAMPLING CHANNELS
GND
OVDD
CMOS/LVDS
SDR/DDR
REFBUFEN
SDO1
SDO2
SDO3
SDO4
CLKOUT
SCK
CNV
SAMPLE
CLOCK
REFOUT1 REFOUT2 REFOUT3 REFOUT4
1µF
10µF
10µF
10µF
10µF
232514 TA01a
9
Data Converters
LTC2325-16
Quad, 16-Bit, 5Msps/Ch
Simultaneous Sampling ADC
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DESCRIPTION
The LTC2325-16 is a low noise, high speed quad 16 bit successive
approximation register (SAR) ADC with differential inputs and
wide input common mode range. Operating from a single 3.3V or
5V supply, the LTC2325-16 has an 8VP-P differential input range,
making it ideal for applications which require a wide dynamic range
with high common mode rejection. The LTC2325-16 achieves
±2LSB INL typical, no missing codes at 16 bits and 82dB SNR.
The LTC2325-16 has an onboard low drift (20ppm/°C max) 2.048V
or 4.096V temperature-compensated reference. The LTC2325-16
also has a high speed SPI-compatible serial interface that supports
CMOS or LVDS. The fast 5Msps per channel throughput with one
cycle latency makes the LTC2325-16 ideally suited for a wide
variety of high speed applications. The LTC2325-16 dissipates
only 40mW per channel and offers nap and sleep modes to reduce
the power consumption to 90μW for further power savings during
inactive periods.
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APPLICATIONS
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High Speed Data Acquisition Systems
Communications
Optical Networking
Multiphase Motor Control
32k Point FFT fSMPL = 5Msps, fIN = 2.2MHz
0
SNR = 82.1dB
THD = –88.1dB
SINAD = 81.5dB
SFDR = 90.2dB
–20
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FEATURES
5Msps/Ch Throughput Rate
Four Simultaneously Sampling Channels
Guaranteed 16-Bit, No Missing Codes
8VP-P Differential Inputs with Wide Input
Common Mode Range
82dB SNR (Typ) at fIN = 2.2MHz
–88dB THD (Typ) at fIN = 2.2MHz
Guaranteed Operation to 125°C
Single 3.3V or 5V Supply
Low Drift (20ppm/°C Max) 2.048V or 4.096V
Internal Reference
1.8V to 2.5V I/O Voltages
CMOS or LVDS SPI-Compatible Serial I/O
Power Dissipation 40mW/Ch (Typ)
Small 52-Lead (7mm × 8mm) QFN Package
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AMPLITUDE (dBFS)
SCK/SCK+
DNC/SCK–
REFBUFEN
VDD
REFOUT4
GND
NC
NC
GND
NC
NC
VDD
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TOP VIEW
52 51 50 49 48 47 46 45 44 43 42 41
AIN4– 1
+
AIN4
40 DNC/SDOD–
2
39
SDO4/SDOD+
GND 3
38 GND
AIN3– 4
37 OVDD
AIN3+ 5
36 DNC/SDOC–
–40
–60
–80
–100
–120
–140
35 SDO3/SDOC+
REFOUT3 6
GND 7
34
53
GND
REF 8
CLKOUTEN/CLKOUT –
0
0.5
1
1.5
FREQUENCY (MHz)
2.5
232516 TA01b
33 CLKOUT/CLKOUT+
32 GND
REFOUT2 9
AIN2– 10
31 OVDD
AIN2+ 11
30 DNC/SDOB–
GND 12
29 SDO2/SDOB+
AIN1– 13
28 DNC/SDOA–
+
TRUE DIFFERENTIAL INPUTS
NO CONFIGURATION REQUIRED
+
27 SDO1/SDOA
AIN1 14
LTC2325CUKG-16
LTC2325IUKG-16
LTC2325HUKG-16
GND
CMOS/LVDS
CNV
SDR/DDR
REFOUT1
VDD
NC
NC
GND
NC
NC
VDD
UKG PACKAGE
52-LEAD (7mm × 8mm) PLASTIC QFN
10µF
1µF
3.3V OR 5V
1.8V TO 2.5V
IN+, IN –
15 16 17 18 19 20 21 22 23 24 25 26
VDD
ARBITRARY
0V
VDD
VDD
DIFFERENTIAL
0V
GND
AIN1+
S/H
AIN1–
16-BIT
SAR ADC
AIN2+
S/H
AIN2–
16-BIT
SAR ADC
LTC2325-16
VDD
0V
BIPOLAR
VDD
UNIPOLAR
0V
AIN3+
S/H
AIN3–
16-BIT
SAR ADC
AIN4+
S/H
AIN4–
16-BIT
SAR ADC
REF
FOUR SIMULTANEOUS
SAMPLING CHANNELS
10
2
GND
OVDD
CMOS/LVDS
SDR/DDR
REFBUFEN
SDO1
SDO2
SDO3
SDO4
CLKOUT
SCK
CNV
SAMPLE
CLOCK
REFOUT1 REFOUT2 REFOUT3 REFOUT4
1µF
10µF
10µF
10µF
10µF
232516 TA01a
Data Converters
LTC2333-18
Buffered 8-Channel, 18-Bit, 800ksps Differential
±10.24V ADC with 30VP-P Common Mode Range
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DESCRIPTION
The LTC2333-18 is an 18-bit, low noise 8-channel multiplexed
successive approximation register (SAR) ADC with buffered
differential, wide common mode range picoamp inputs. Operating
from a 5V low voltage supply, flexible high voltage supplies, and
using the internal reference and buffer, this SoftSpan ADC can be
configured on a conversion-by-conversion basis to accept ±10.24V,
0V to 10.24V, ±5.12V, or 0V to 5.12V signals on any channel.
Alternately, the ADC may be programmed to cycle through a
sequence of channels and ranges without further user intervention.
The integrated picoamp-input analog buffers, wide input common
mode range and 128dB CMRR of the LTC2333-18 allow the ADC to
directly digitize a variety of signals using minimal board space and
power. This input signal flexibility, combined with ±3LSB INL, no
missing codes at 18 bits, and 96.4dB SNR, makes the LTC2333-18
an ideal choice for many high voltage applications requiring wide
dynamic range.
The LTC2333-18 supports pin-selectable SPI CMOS (1.8V to 5V)
and LVDS serial interfaces.
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APPLICATIONS
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FEATURES
Eight Buffered Multiplexed Channels
800ksps Throughput
500pA/12nA Maximum Input Leakage at 85°C/125°C
±3LSB INL (Maximum ±10.24V Range)
Guaranteed 18-Bit, No Missing Codes
Differential, Wide Common Mode Range Inputs
8-Channel Multiplexer with SoftSpan™ Input Ranges:
n ±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V
n ±12.5V, 0V to 12.5V, ±6.25V, 0V to 6.25V
96.4dB Single-Conversion SNR (Typical)
−110dB THD (Typical) at fIN = 2kHz
128dB CMRR, –125dB Active Crosstalk (Typical)
420ns Step Response (Full-Scale, 0.005% Settling)
Rail-to-Rail Input Overdrive Tolerance
Programmable Sequencer with No-Latency Control
Integrated Reference and Buffer (4.096V)
SPI CMOS (1.8V to 5V) and LVDS Serial I/O
268mW Power Dissipation (Typical)
48-Lead (7mm × 7mm) LQFP Package
Integral Nonlinearity vs
Output Code and Channel
Direct Sensor Measurement
Programmable Logic Controllers
Industrial Process Control
Test and Measurement
2.0
±10.24V RANGE
TRUE BIPOLAR DRIVE (IN– = 0V)
ALL CHANNELS
1.5
INL ERROR (LSB)
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1.0
48
47
46
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43
42
41
40
39
38
37
IN7+
IN7–
GND
VEE
GND
VDD
VDD
GND
VDDLBYP
CS
BUSY
SDI
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TOP VIEW
0.5
0
–0.5
–1.0
–1.5
IN6– 1
IN6+ 2
IN5– 3
IN5+ 4
IN4– 5
IN4+ 6
IN3– 7
IN3+ 8
IN2– 9
IN2+ 10
IN1– 11
IN1+ 12
IN0– 13
IN0+ 14
GND 15
VCC 16
VEE 17
GND 18
REFIN 19
GND 20
REFBUF 21
PD 22
LVDS/CMOS 23
CNV 24
36
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34
33
32
31
30
29
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27
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25
LTC2333CLX-18
LTC2333ILX-18
LTC2333HLX-18
–2.0
–131072
–65536
SCKO–/SDO
SCKO+/SCKO
0
65536
OUTPUT CODE
131072
233318 TA01b
OVDD
GND
SCKI–/SCKI
SCKI+
SDI–
SDI+
15V
0.1µF
GND
5V
0.1µF
2.2µF
1.8V TO 5V
0.1µF
CMOS OR LVDS
I/O INTERFACE
+10V
ARBITRARY
FULLY
DIFFERENTIAL
+5V
0V
0V
–10V
–5V
TRUE BIPOLAR
+10V
+10V
0V
0V
–10V
–10V
IN0+
IN0–
UNIPOLAR
DIFFERENTIAL INPUTS IN+/IN– WITH
WIDE INPUT COMMON MODE RANGE
VCC
BUFFERS
VDD
VDDLBYP
OVDD LVDS/CMOS
PD
LTC2333-18
• • •
LX
PACKAGE
LX PACKAGE
48-LEAD
7mm)PLASTIC
PLASTIC
48-LEAD(7mm
(7mm ×
× 7mm)
LQFPLQFP
GND
SDO–
SDO+
SDO
SCKO
SCKI
SDI
CS
BUSY
CNV
18-BIT
SAMPLING
ADC
MUX
IN7+
IN7–
VEE REFBUF
EIGHT BUFFERED
CHANNELS
REFIN
SAMPLE
CLOCK
GND
233318 TA01a
0.1µF
47µF
0.1µF
–15V
Protected by U.S. Patents, including 7705765, 7961132, 8319673, 9197235.
11
%BUB$POWFSUFST
LTC2358-18
Buffered Octal, 18-Bit, 200ksps/Ch Differential
±10.24V ADC with 30VP-P Common Mode Range
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FEATURES
DESCRIPTION
Simultaneous Sampling of 8 Buffered Channels
200ksps per Channel Throughput
500pA/12nA Max Input Leakage at 85°C/125°C
±3.5LSB INL (Maximum, ±10.24V Range)
Guaranteed 18-Bit, No Missing Codes
Differential, Wide Common Mode Range Inputs
Per-Channel SoftSpan Input Ranges:
n ±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V
n ±12.5V, 0V to 12.5V, ±6.25V, 0V to 6.25V
96.4dB Single-Conversion SNR (Typical)
−111dB THD (Typical) at fIN = 2kHz
128dB CMRR (Typical) at fIN = 200Hz
Rail-to-Rail Input Overdrive Tolerance
Integrated Reference and Buffer (4.096V)
SPI CMOS (1.8V to 5V) and LVDS Serial I/O
Internal Conversion Clock, No Cycle Latency
219mW Power Dissipation (27mW/Ch Typical)
48-Lead (7mm x 7mm) LQFP Package
The LTC2358-18 is an 18-bit, low noise 8-channel simultaneous
sampling successive approximation register (SAR) ADC with
buffered differential, wide common mode range picoamp inputs.
Operating from a 5V low voltage supply, flexible high voltage
supplies, and using the internal reference and buffer, each channel
of this SoftSpan ADC can be independently configured on a
conversion-by-conversion basis to accept ±10.24V, 0V to 10.24V,
±5.12V, or 0V to 5.12V signals. Individual channels may also be
disabled to increase throughput on the remaining channels.
The integrated picoamp-input analog buffers, wide input common
mode range and 128dB CMRR of the LTC2358-18 allow the ADC
to directly digitize a variety of signals using minimal board space
and power. This input signal flexibility, combined with ±3.5LSB
INL, no missing codes at 18 bits, and 96.4dB SNR, makes the
LTC2358-18 an ideal choice for many high voltage applications
requiring wide dynamic range.
The LTC2358-18 supports pin-selectable SPI CMOS (1.8V to 5V)
and LVDS serial interfaces. Between one and eight lanes of data
output may be employed in CMOS mode, allowing the user to
optimize bus width and throughput.
APPLICATIONS
Integral Nonlinearity vs
Output Code and Channel
2.0
IN6– 1
IN6+ 2
IN5– 3
IN5+ 4
IN4– 5
IN4+ 6
IN3– 7
IN3+ 8
IN2– 9
IN2+ 10
IN1– 11
IN1+ 12
1.0
36
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34
33
32
31
30
29
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27
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25
0
–0.5
–1.0
–1.5
–2.0
–131072
0
65536
OUTPUT CODE
5V
0.1μF
131072
235818 TA01b
1.8V TO 5V
0.1μF
2.2μF
CMOS OR LVDS
I/O INTERFACE
+10V
ARBITRARY
FULLY
DIFFERENTIAL
+5V
0V
0V
–10V
–5V
TRUE BIPOLAR
+10V
+10V
0V
0V
–10V
–10V
VCC
BUFFERS
IN0+
IN0–
VDD
VDDLBYP
S/H
OVDD LVDS/CMOS
PD
LTC2358-18
S/H
SDO0
S/H
UNIPOLAR
DIFFERENTIAL INPUTS IN+/IN– WITH
WIDE INPUT COMMON MODE RANGE
S/H
S/H
MUX
18-BIT
SAR ADC
SDO7
SCKO
SCKI
SDI
CS
BUSY
CNV
S/H
S/H
IN7+
IN7–
S/H
VEE REFBUF
REFIN
GND
SAMPLE
CLOCK
235818 TA01a
EIGHT BUFFERED
SIMULTANEOUS
SAMPLING CHANNELS
12
–65536
15V
0.1μF
ttt
LTC2358CLX-18
LTC2358ILX-18
LTC2358HLX-18
SDO7
SDO–/SDO6
SDO+/SDO5
SCKO–/SDO4
SCKO+/SCKO
OVDD
GND
SCKI–/SCKI
SCKI+/SDO3
SDI–/SDO2
SDI+/SDO1
SDO0
0.5
ttt
LX PACKAGE
48-LEAD (7mm × 7mm) PLASTIC LQFP
±10.24V RANGE
TRUE BIPOLAR DRIVE (IN– = 0V)
ALL CHANNELS
1.5
TOP VIEW
INL ERROR (LSB)
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IN7+
IN7–
GND
VEE
GND
VDD
VDD
GND
VDDLBYP
CS
BUSY
SDI
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37
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Programmable Logic Controllers
Industrial Process Control
Power Line Monitoring
Test and Measurement
IN0– 13
IN0+ 14
GND 15
VCC 16
VEE 17
GND 18
REFIN 19
GND 20
REFBUF 21
PD 22
LVDS/CMOS 23
CNV 24
n
0.1μF
47μF
0.1μF
–15V
Protected by U.S. Patents, including 7705765, 7961132, 8319673, 9197235.
Data Converters
LTC2500-32
32-Bit Oversampling ADC
with Configurable Digital Filter
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DESCRIPTION
The LTC2500-32 is a low noise, low power, high performance 32-bit
ADC with an integrated configurable digital filter. Operating from
a single 2.5V supply, the LTC2500-32 features a fully differential
input range up to ±VREF, with VREF ranging from 2.5V to 5.1V. The
LTC2500-32 supports a wide common mode range from 0V to VREF
simplifying analog signal conditioning requirements.
The LTC2500-32 simultaneously provides two output codes: (1) a
32-bit digitally filtered high precision low noise code, and (2) a 32-bit
no latency composite code. The configurable digital filter reduces
measurement noise by lowpass filtering and downsampling the
stream of data from the SAR ADC core, giving the 32-bit filtered
output code. The 32-bit composite code consists of an overrange
detection bit, a 24-bit code representing the differential input voltage
and a 7-bit code representing the common mode input voltage. The
32-bit composite code is available each conversion cycle, with no
cycle of latency.
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APPLICATIONS
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The digital filter is highly configurable through the SPI-compatible
interface and features many distinct filter types that suit a variety
of applications. The digital lowpass filter relaxes the requirements
for analog anti-aliasing. Multiple LTC2500-32 devices can be easily
synchronized using the SYNC pin.
Seismology
Energy Exploration
Automatic Test Equipment
High Accuracy Instrumentation
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FEATURES
±0.5ppm INL (Typ)
104dB SNR (Typ) at 1Msps
148dB Dynamic Range (Typ) at 61sps
Guaranteed 32 Bits No Missing Codes
Configurable Digital Filter with Synchronization
n Relaxed Anti-Aliasing Filter Requirements
Dual Output 32-Bit SAR ADC
n 32-Bit Digitally Filtered Low Noise Output
n 24-Bit Differential + 7-Bit Common Mode 1Msps Output
with Overrange Detection
Wide Input Common Mode Range
Guaranteed Operation to 85°C
1.8V to 5V SPI-Compatible Serial I/O
Low Power: 24mW at 1Msps
24-Lead 7mm × 4mm DFN Packages
Integral Nonlinearity vs Output Code
2.0
1.5
TOP VIEW
25
GND
INL ERROR (ppm)
1.0
RDLA 1
RDLB 2
VDD 3
GND 4
IN+ 5
IN– 6
GND 7
REF 8
REF 9
PRE 10
GND 11
GND 12
24 GND
23 GND
22 OVDD
21 BUSY
20 SDOB
19 SCKB
18 SCKA
17 SDOA
16 SDI
15 DRL
14 SYNC
13 MCLK
0.5
0
–0.5
–1.0
–1.5
–2.0
–5
–2.5
0
2.5
INPUT VOLTAGE (V)
5
250032 TA01b
DKD PACKAGE
DKD PACKAGE
24-LEAD (7mm × 4mm) PLASTIC DFN
24-LEAD (7mm × 4mm) PLASTIC DFN
1.8V TO 5.1V
2.5V
LTC2500CDKD-32
LTC2500IDKD-32
10µF
0.1µF
IN+, IN–
VREF
ARBITRARY
0V
VREF
DIFFERENTIAL
VREF
VDD
IN+
32-BIT
SAR ADC
CORE
0V
BIPOLAR
VREF
UNIPOLAR
LTC2500-32
PROGRAMMABLE
LOW PASS
WIDEBAND DIGITAL
FILTER
0V
DIFFERENTIAL INPUTS IN+/IN– WITH
WIDE INPUT COMMON MODE RANGE
Protected by U.S. patents, including 7705765, 7961132, 8319673, 8576104, 8810443, 9231611, 9054727,
9331709 and patents pending.
REF
2.5V TO 5.1V
32-BIT
24-BIT
IN –
0V
OVDD
GND
MCLK
BUSY
DRL
SAMPLE
CLOCK
SDI
SDOA
SCKA
RDLA
RDLB
SDOB
SCKB
250032 TA01
47µF
(X7R, 1210 SIZE)
13
High Frequency
LTC5553
3GHz to 20GHz
Microwave Mixer
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DESCRIPTION
The LTC5553 is a high performance, microwave double balanced
passive mixer that can be used for frequency upconversion or
downconversion.
The LTC5553’s mixer and integrated RF balun are optimized to
cover the 3GHz to 20GHz RF frequency range. The device includes
an integrated LO amplifier optimized for the 1GHz to 20GHz
frequency range, requiring only 0dBm drive. The integrated IF balun
is optimized to cover a very wide, 500MHz to 9GHz, frequency
range while providing a single-ended 50Ω interface.
The LTC5553 delivers exceptionally high IIP3 and P1dB, in addition
to low LO to RF and LO to IF leakages. The part also offers a high
level of integration in a small package.
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APPLICATIONS
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5G Broadband Wireless Access
Microwave Transceivers
Wireless Backhaul
Point-to-Point Microwave
Phased-Array Antennas
C, X and Ku Band RADAR
Test Equipment
Satellite Modems
Electrostatic Sensitive Device
Observe Handling Precautions
ESD Sensitivity:
HBM =Class 0 on Pin 11
Class 1C All Other Pins
CDM =500V All Pins
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FEATURES
Upconversion or Downconversion
High IIP3: +24.3dBm at 10GHz
+21.5dBm at 17GHz
9dB Conversion Loss at 10GHz
+16dBm Input P1dB at 10GHz
Integrated LO Buffer: 0dBm LO Drive
Low LO-RF Leakage: <–25dBm
50Ω Wideband Matched RF, LO and IF Ports
3.3V/132mA Supply
Fast Turn ON/OFF for TDD Operation
3mm × 2mm, 12-Lead QFN Package
GND
11
10
9
GND
3
4
5
6
GND
2
13
GND
RF
IF
Conversion Loss and IIP3
(Low Side LO, IF = 1890MHz)
29
VCC
8
GND
7
EN
CONVERSION LOSS (dB), IIP3 (dBm)
LO
12
1
GND
GND
GND
TOP VIEW
UDB PACKAGE
12-LEAD (3mm × 2mm) PLASTIC QFN
LTC5553IUDB
LTC5553
LNA
RF
IF
RX
IFOUT
DOWNMIXING
UPMIXING
27
25
IIP3
23
21
19
17
15
13
CONVERSION LOSS
11
9
7
3
5
7
9 11 13 15 17
RF FREQUENCY (GHz)
19
21
5553 TA01b
LO
RX
LO
DUPLEXER
TX
LO
LO
PA
RF
IF
TX
IFIN
LTC5553
5553 TA01a
14
Protected by U.S. patents, including 9312815.
Inductorless DC/DC Controller
LTC7820
Fixed Ratio High Power
Inductorless (Charge Pump) DC/DC Controller
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FEATURES
DESCRIPTION
Low Profile, High Power Density, Capable of 500W+
Soft Switching: 99% Peak Efficiency and Low EMI
VIN Max for Voltage Divider (2:1): 72V
VIN Max for Voltage Doubler (1:2)/Inverter (1:1): 36V
Wide Bias VCC Range: 6V to 72V
Soft Start-Up into Steady State Operation
6.5V to 40V EXTVCC Input for Improved Efficiency
Input Current Sensing and Overcurrent Protection
Wide Operating Frequency Range: 100kHz to 1MHz
Output Short-Circuit/OV/UV Protections with
Programmable Timer and Retry
Thermally Enhanced 28-Lead 4mm × 5mm QFN Package
The LTC7820 is a fixed ratio high voltage high power switched
capacitor/charge pump controller. The device includes four
N-channel MOSFET gate drivers to drive external power MOSFETs
in voltage divider, doubler or inverter configurations. The device
achieves a 2:1 step-down ratio from an input voltage as high as 72V,
a 1:2 step-up ratio from an input voltage as high as 36V, or a 1:1
inverting ratio from an input voltage up to 36V. Each power MOSFET
is switched with 50% duty cycle at a constant pre-programmed
switching frequency. System efficiency can be optimized to over
99%. The LTC7820 provides a small and cost effective solution for
high power, non-isolated intermediate bus applications with fault
protection.
The LTC7820 switching frequency can be linearly programmed from
100 kHz to 1MHz. The device is available in a thermally enhanced
28-lead QFN package with some no-connect pins for high voltage
compatible pin spacing.
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APPLICATIONS
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Efficiency and Power Loss vs Load Current
2.0
100
VIN = 48V
VOUT = 24V
EFFICIENCY
1.6
1.2
98
fs = 100kHz
0.8
97
VIN = 24V
VOUT = 12V
96
95
1
2
3
LOAD CURRENT (A)
4
Very High Efficiency 5A Voltage Divider
0.4
POWER LOSS
0
POWER LOSS (W)
EFFICIENCY (%)
99
5
10Ω
0
0.1µF
7820 TA01b
BOOST1
ISENSE
VHIGH_SENSE 1
22 BOOST2
NC 2
0.1µF
RUN
20 VLOW
19 VLOW_SENSE
29
GND
FREQ 5
INTVCC
12V
18 BOOST3
RUN 6
16 SW3
UV 8
15 G4
HYS_PRGM
PGOOD
FREQ
NC
VCC
INTVCC
NC
EXTVCC
UV
10k
10k
SW1
G2
10µF
×6
1µF
BOOST2
VLOW
10Ω
G3
0.1µF
VLOW_SENSE
10k
9 10 11 12 13 14
UFDPACKAGE
PACKAGE
UFD
28-LEAD
(4mm××5mm)
5mm) PLASTIC
28-LEAD
(4mm
PLASTICQFN
QFN
EXTVCC
10k
17 G3
PGOOD 7
LTC7820
TIMER
21 G2
HYS_PRGM 3
0.1µF
BOOST1
+
28 27 26 25 24 23
TIMER 4
G1
ISENSE–
VIN
48V/24V
RSENSE
0.005Ω
VCC
0.1µF
G1
SW1
NC
ISENSE+
ISENSE–
VHIGH_SENSE
100Ω
TOP VIEW
FAULT
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Bus Converters
High Power Distributed Power Systems
Communications Systems
Industrial Applications
40k
1µF
10µF
VOUT
24V/12V
5A*
BOOST3
SW3
G4
INTVCC
* LOAD CURRENT APPLIED
AFTER STARTUP
INTVCC
4.7µF
FAULT
GND
7820 TA01a
LTC7820EUFD
LTC7820IUFD
Protected by U.S. patents, including 9484799.
15
Interface
LTM2895
100MHz Isolated
DAC SPI Serial Interface
FEATURES
DESCRIPTION
Isolated Interface: 6000VRMS for 1 Minute
nn UL-CSA-IEC Certification Pending
nn 100MHz SPI-Compatible I/O
nn Configurable SPI Word Length: 8 to 32 Bits
nn Supports Two Isolated Chip Selects
nn Falling Edge Sensitive Low Jitter LOAD
nn Three Isolated Control or Multiplexer Signals
nn 1.71V to 5.5V I/O Voltages
nn 3V to 5.5V Supply Voltages
nn High Common Mode Transient Immunity
nn 15mm × 6.25mm BGA Package
The LTM2895 is a high speed isolated µModule (micromodule)
SPI interface with DAC control signals designed to isolate our
family of general purpose DACs and to isolate general purpose SPI
interfaces. The LTM2895 works with DACs and general purpose
devices that have a mode (0, 0) SPI interface.
nn
The interface enables fast data throughput, which makes the
LTM2895 ideally suited for a wide variety of applications. The high
speed SPI-compatible serial port supports 1.71V to 5.5V logic
supplies. The LTM2895 is targeted at generic SPI and digital-toanalog converter applications.
The isolation barrier tolerates large voltage ground variations
between the logic interface and the isolated side of the LTM2895.
Uninterrupted communication is maintained during voltage
transients greater than 50kV/µs.
APPLICATIONS
Remote Interface Control
Industrial Process Control and Automation
nn Test and Measurement Equipment
nn Breaking Ground Loops
nn
nn
LTC2642-16 DAC Isolation
3.3V
8Vi
5Vi
VIN
LT6654-5
VOUT
GND
10k
VDD
VCC2
ON
BUSY
FAULT
LOAD
SS
SSB
SCK
MOSI
MISO
SA
SB
SC
GND
VL2
GND
100k
LOAD2
SS2
SSB2
SCK2
MOSI2
MISO2
SA2
SB2
SC2
GND2
10µF
5Vi
ON2
LTM2895
ISOLATION BARRIER
ON
SYSINT
FLTINT
LOAD
CS
μP
CS2
SCK
MOSI
MISO
CLR
VL VCC
VDD
REF
27pF
RFB
CS
SCK
DIN
CLR
INV
LTC2642-16
VOUT
–
+
8Vi
LT1468
–8Vi
GND
2895TA01
CONFIGURATION REGISTERS: WRITE 0x30H AND 0x83H
SETS SCK2 TO 33MHz AND WORD LENGTH TO 16-BIT
Vi = ISOLATED VOLTAGE SUPPLY
TOP VIEW
6
LOAD
FAULT
SC
SC2
DNC
LOAD2
BUSY
GND
SB
SB2
GND2
DNC
SSB2
SCK2
5
4
SCK
SSB
SA
SA2
MOSI
GND
GND
GND2
SS
MISO
GND
GND2 MISO2
ON
VL
VCC
A
B
C
3
GND2 MOSI2
2
SS2
1
D
E
F
G
H
J
K
L
BGA
BGAPACKAGE
PACKAGE
36-LEAD
36-LEAD(15mm
(15mm××6.25mm
6.25mm××2.06mm)
2.06mm)
LTM2895CY
LTM2895IY
LTM2895HY
16
M
VCC2
VL2
ON2
N
P
R
OUT
Isolated CAN + Power
Rugged 4Mbps μModule CAN Transceiver
Features 2500VRMS Isolation and ±25kV ESD Protection
Galvanic Isolation
3.3V or 5V
ISOLATED
CAN
Controller
POWER
TXD
REG
5V OUT
CANH
RXD
CAN
BUS
CANL
LTM2889
TheLTM®2889isarobustisolatedCANtransceiverthatbreaksgroundloopsbyisolatingthelogiclevelinterfaceandline
transceiver.AnonboardDC/DCconverterpowersthetransceiverandprovides0.75Wforpoweringadditionalsystem
circuitry.TheISO11898-2compliantCANtransceiversupportsanextendedcommonmoderangeof±36V,is±60Vfault
protectedand±25kVESDprotected,andprovidesuninterruptedcommunicationduringcommonmodetransientsover30kV/µs.
Thisensureshighsystemreliabilityundertheharshestoperatingconditions.
Features
• Isolated4MbpsCANTransceiver
• 2500VRMSfor1MinuteperUL1577
• Upto150mAIsolatedPowerOutput
• ±60VFaultProtection
• HighCommonModeTransient
Immunity:30kV/µs
• ±25kVESDTransceiverInterface
• 15mmx11.25mmBGAPackage
LTM2889 ±25kV ESD Protection
Info & Free Samples
www.linear.com/product/LTM2889
www.linear.com/products/
umodule_solutions
1-800-4-LINEAR
, LT, LTC, LTM, Linear Technology and the Linear logo are
registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Linear Regulator
LT3045-1
20V, 500mA, Ultralow Noise,
Ultrahigh PSRR Linear Regulator with VIOC Control
FEATURES
DESCRIPTION
The LT3045-1 is a high performance low dropout linear regulator
featuring LTC’s ultralow noise and ultrahigh PSRR architecture
for powering noise sensitive applications. Designed as a precision
current reference followed by a high performance voltage buffer,
the LT3045-1 can be easily paralleled to further reduce noise,
increase output current and spread heat on the PCB. In addition to
the LT3045 feature set, the LT3045-1 incorporates a VIOC tracking
function to control an upstream switching converter to maintain a
constant voltage across the LT3045-1 and hence minimize power
dissipation.
Ultralow RMS Noise: 0.8µVRMS (10Hz to 100kHz)
nn Ultralow Spot Noise: 2nV/√Hz at 10kHz
nn Ultrahigh PSRR: 76dB at 1MHz
nn Output Current: 500mA
nn Wide Input Voltage Range: 1.8V to 20V
nn Single Capacitor Improves Noise and PSRR
nn 100µA SET Pin Current: ±1% Initial Accuracy
nn VIOC Pin Controls Upstream Regulator to Minimize Power
Dissipation
nn Single Resistor Programs Output Voltage
nn Programmable Current Limit
nn Low Dropout Voltage: 260mV
nn Output Voltage Range: 0V to 15V
nn Programmable Power Good
nn Fast Start-Up Capability
nn Precision Enable/UVLO
nn Parallelable for Lower Noise and Higher Current
nn Internal Current Limit with Foldback
nn Minimum Output Capacitor: 10µF Ceramic
nn Reverse Battery and Reverse Current Protection
nn 12-Lead MSOP and 3mm × 3mm DFN Packages
nn
The device supplies 500mA at a typical 260mV dropout voltage.
Operating quiescent current is nominally 2.3mA and drops to <<1µA
in shutdown. The LT3045-1’s wide output voltage range (0V to 15V)
while maintaining unity-gain operation provides virtually constant
output noise, PSRR, bandwidth and load regulation, independent
of the programmed output voltage. Additionally, the regulator
features programmable current limit, fast start-up capability and
programmable power good to indicate output voltage regulation.
The LT3045-1 is stable with a minimum 10µF ceramic output
capacitor. Built-in protection includes reverse battery protection,
reverse current protection, internal current limit with foldback and
thermal limit with hysteresis. The LT3045-1 is available in thermally
enhanced 12-Lead MSOP and 3mm × 3mm DFN packages.
APPLICATIONS
RF Power Supplies: PLLs, VCOs, Mixers, LNAs, PAs
nn Very Low Noise Instrumentation
nn High Speed/High Precision Data Converters
nn Medical Applications: Imaging, Diagnostics
nn Post Regulator for Switching Supplies
nn
Noise Spectral Density
1000
NOISE (µV/√Hz)
LDOIN = 4.3V
LDOOUT = 3.3V
100 ILOAD = 500mA
TOP VIEW
IN
1
IN
2
VIOC
3
EN/UV
4
PG
5
ILIM
6
12 OUT
11 OUT
13
GND
10 OUTS
9 GND
10
1
0.1
8 SET
7 PGFB
0.01
DD PACKAGE
DD PACKAGE
12-LEAD (3mm × 3mm) PLASTIC DFN
LDOOUT
LDOIN
Noise Floor
10
100
12-LEAD (3mm × 3mm) PLASTIC DFN
1k
10k 100k
FREQUENCY (Hz)
1M
LT3045EDD-1
LT3045IDD-1
VIN
12V
TOP VIEW
IN
IN
VIOC
EN/UV
PG
ILIM
1
2
3
4
5
6
13
GND
12
11
10
9
8
7
MSE PACKAGE
MSE PACKAGE
12-LEAD PLASTIC MSOP
12-LEAD PLASTIC MSOP
LT3045EMSE-1
LT3045IMSE-1
18
OUT
OUT
OUTS
GND
SET
PGFB
10M
30451 TA01b
IN
10nF
40.2k
LT8608
BST
EN/UV
SW
TR/SS
PG
0.22µF
EN/UV
100µA
–
+
PG
2.21k
FB
INTVCC GND
LT3045-1
IN
47µF
MODE
RT
2.2µH
7.68k
VLDOIN – VLDOUT = 1V
OUT
OUTS
VIOC
SET
GND ILIM
PGFB
10µF
30451 TA01a
1µF
fSW = 1MHz
L: XFL4020-222MEC
VOUT: VARIABLE
IOUT(MAX): 500mA
4.7µF
249Ω
Power over Ethernet Controller
LT4294
IEEE 802.3bt PoE++
PD Interface Controller
FEATURES
DESCRIPTION
The LT4294 is an IEEE 802.3af/at/bt (Draft 2.3)-compliant powered
device (PD) interface controller. The T2P output indicates the
number of classification events received during IEEE 802.3btcompliant mutual identification and negotiation of available power.
IEEE 802.3af/at/bt (Draft 2.3) Powered Device (PD) Controller
nn Supports Up to 71W PDs
nn 5-Event Classification Sensing
nn Superior Surge Protection (100V Absolute Maximum)
nn Wide Junction Temperature Range (–40°C to 125°C)
nn Overtemperature Protection
nn Integrated Signature Resistor
nn External Hot Swap N-Channel MOSFET for Lowest Power
Dissipation and Highest System Efficiency
nn Configurable Aux Power Support as Low as 9V
®
nn Easy Migration Between LTPoE++
PDs and IEEE 802.3bt PDs
nn Pin Compatible with LT4275A/B/C
nn Available in 10-Lead MSOP and 3mm × 3mm DFN Packages
nn
The LT4294 utilizes an external, low RDS(ON) N-channel hot swap
MOSFET and supports the LT4320/LT4321 ideal diode bridges, to
extend the end-to-end power delivery efficiency and eliminate costly
heat sinks. The LT4294 also includes a power good output, onboard
signature resistor, undervoltage lockout and thermal protection.
Start-up inrush current is adjustable with an external capacitor.
Auxiliary power override is supported as low as 9V with the AUX pin.
The LT4294 can be configured to support all possible 802.3bt,
802.3at and 802.3af power levels with external component changes.
Pin-for-pin compatibility with the LT4275 family of PD Interface
Controllers enables easy migration between LTPoE++ PDs and IEEE
802.3bt-compliant PDs.
APPLICATIONS
High Power Wireless Data Systems
Outdoor Security Camera Equipment
nn Commercial and Public Information Displays
nn High Temperature Industrial Applications
nn
nn
TOP VIEW
GND
1
AUX
2
RCLASS
3
RCLASS++
4
GND
5
TOP VIEW
GND
AUX
RCLASS
RCLASS++
GND
10 VPORT
9 HSGATE
11
GND
8 HSSRC
7 PWRGD
1
2
3
4
5
10
9
8
7
6
Single-Signature
Power Classification
VPORT
HSGATE
HSSRC
PWRGD
T2P
MS
MS PACKAGE
PACKAGE
10-LEAD
10-LEAD PLASTIC
PLASTIC MSOP
MSOP
6 T2P
LT4294IMS
LT4294HMS
DD
DD PACKAGE
PACKAGE
10-LEAD
3mm) PLASTIC
PLASTIC DFN
DFN
10-LEAD (3mm
(3mm ×
× 3mm)
LT4294IDD
LT4294HDD
IEEE 802.3bt Single-Signature Powered Device Interface
VAUX (9V TO 60V)
DATA
PAIR
SPARE
PAIR
~
–
~
+
0
13W
1
3.84W
2
6.49W
3
13W
4
25.5W
5
40W
6
51W
7
62W
8
71W
CPORT
PSMN040-100MSE
+
~
~
+
CLASS
AVAILABLE
POWER
AT PD INPUT
VPORT
CPD
0.1µF
3.3k
VIN
47nF
VPORT HSGATE
–
PWRGD
AUX
RCLASS
RCLASS++
RCLS
RCLS++
HSSRC
ISOLATED
POWER
SUPPLY
RUN
+
VOUT
–
LT4294
GND
T2P
OPTO
PSE TYPE
(TO µP)
4294 TA01a
19
µModule Regulators
LTM4636-1
40A µModule Regulator
with Overvoltage/Overtemperature Protection
FEATURES
DESCRIPTION
Overtemperature, Input/Output Overvoltage
Protection
nn Trips Upstream Power Source or Circuit Breaker
nn Stacked Inductor Acts as Heat Sink
nn Wide Input Voltage Range: 4.7V to 15V
nn 0.6V to 3.3V Output Voltage Range
nn ±1.3% Total DC Output Voltage Error (–40°C to 125°C)
nn Differential Remote Sense Amplifier for Precision Regulation
nn Current Mode Control/Fast Transient Response
nn Frequency Synchronization
nn Parallel Current Sharing (Up to 240A)
nn 88% Efficiency (12V
IN, 1VOUT) at 40A
nn Overcurrent Foldback Protection
nn Overtemperature Shutdown
nn 16mm × 16mm × 7.07mm BGA Package
The LTM4636-1 is a 40A step-down µModule (power module)
switching regulator with stacked inductor as a heat sink for heat
dissipation and cooler operation in a small package. The LTM4636-1
detects overtemperature and input/output overvoltage conditions
and can trip an upstream power supply or circuit breaker to protect
itself and its load. The exposed inductor as a heat sink permits
direct contact with airflow from any direction. The LTM4636-1 can
deliver 40W (12VIN, 1VOUT, 40A, 200LFM) with only 40°C rise over
the ambient temperature. Full-power 40W is delivered up to 83°C
ambient and half-power 20W is supported at 110°C ambient.
nn
The LTM4636-1 operates at 92%, 90% and 88% efficiency
delivering 15A, 30A and 40A, respectively, to a 1V load (12VIN).
The µModule regulator is scalable where four in current sharing
deliver 160W with only 40°C rise and 88% efficiency (12VIN, 1VOUT,
400LFM). The LTM4636-1 is offered in 16mm × 16mm × 7.07mm
BGA package.
APPLICATIONS
TOP VIEW
Telecom Servers and Networking Equipment
nn Industrial Equipment and Medical Systems
nn
VOUTS1–
VOUTS1+ COMPB
1
3
2
4
5
6
A
TRACK/SS
RUNC
PGOOD
SNSP1
SNSP2
MODE/PLLIN
9
10
11
12
OVER_TEMP
OVP_TRIP
CROWBAR
OVP_SET
PHMODE
RUNP
PVCC
OTP_SET
TEMP–
TEMP+
GMON
C
D
VFB COMPA
E
SGND
CLKOUT
8
VOUT
B
TEST2
HIZREG
7
F
FREQ GND
G
H
GND
INTVCC
TEST3
BIAS
PWM TMON
TEST1
GND
J
K
L
VIN
GND
SW
M
BGA PACKAGE
PACKAGE
144-LEADBGA
(16mm
× 16mm × 7.07mm)
144-LEAD (16mm × 16mm × 7.07mm)
LTM4636-1EY
LTM4636-1IY
1V, 40A DC/DC µModule Regulator
VSYS
4.7V
TO
15V
HOT SWAP
CIRCUIT
BREAKER
4.5V TO 5.5V RANGE
BIAS
VIN ≤ 5.5V, TIE VIN AND PVCC
TOGETHER, TIE RUNP TO GND.
VIN > 5.5V, THEN OPERATE AS SHOWN
+
22µF
16V
×5
100µF
25V
61.9k
INTVCC
PVCC
15k
0.1µF
INTVCC
OPTIONAL OVERTEMPERATURE
AND OVERVOLTAGE FAULT SIGNAL
34.8k
VIN
PINS NOT USED IN THIS CIRCUIT:
CLKOUT, GMON, PGOOD, PHMODE, PWM,
SW, TEST1, TEST2, TEST3, TMON
OPTIONAL TEMP MONITOR
20
22µF
86.6k
100
INTVCC BIAS PVCC
RUNC
RUNP
HIZREG
OVER_TEMP
OVP_TRIP
OTP_SET
OVP_SET
CROWBAR
95
OPTIONAL CROWBAR
0.01µF
LTM4636-1
FREQ
VOUT
TRACK/SS
VOUTS1+
MODE/PLLIN
SNSP1
SNSP2
12VIN , 1VOUT Efficiency at
350kHz vs Output Current
PVCC
VOUTS1–
COMPA
VFB
COMPB
TEMP+ TEMP– SGND PGND
100k
1V
+
VOUT
1V, 40A
470µF
6.3V
×3
100µF
6.3V
×4
EFFICIENCY (%)
UPSTREAM
BIAS
REGULATOR
90
85
80
75
70
7.5k
46361 TA01a
0
5
10 15 20 25 30
OUTPUT CURRENT (A)
35
40
46361 TA01b
Protected by U.S. Patents, including 5481178, 5847554, 6580258, 6304066, 6476589, 6774611, 6677210, 8163643.
µModule Regulators
LTM4650A
Dual 25A or Single 50A
DC/DC µModule Regulator with 1% DC Accuracy
FEATURES
DESCRIPTION
Dual 25A or Single 50A Output
nn Input Voltage Range: 4.5V to 16V
nn Output Voltage Range: 0.6V to 5.5V
nn ±1% Maximum Total DC Output Error Over Line, Load and
Temperature
nn Higher Light Load Efficiency and Wider V
OUT Range Than
LTM4650-1
nn Differential Remote Sense Amplifier
nn Current Mode Control/Fast Transient Response
nn Multiphase Parallel Current Sharing Up to 300A
nn Internal Temperature Monitor
nn Adjustable Switching Frequency or Synchronization
nn Overcurrent Foldback Protection
nn Selectable Burst Mode® Operation, Pulse-Skipping Mode
Operation
nn Soft-Start/Voltage Tracking
nn Output Overvoltage Protection
nn
nn
The LTM4650A is a dual 25A or single 50A output switching mode
step-down DC/DC µModule (micromodule) regulator with ±1%
total DC output error. Included in the package are the switching
controllers, power FETs, inductors and all supporting components.
Operating from an input voltage range of 4.5V to 16V, the
LTM4650A supports two outputs with an output voltage range of
0.6V to 5.5V, each set by a single external resistor. Its high efficiency
design delivers up to 25A continuous current for each output. Only
a few input and output capacitors are needed. Fast internal control
loop compensation allows for fast transient response to minimize
output capacitance when powering FPGAs, ASICs and processors.
Fault protection features include overvoltage and overcurrent
protection. The LTM4650A is offered in 16mm × 16mm × 5.01mm
BGA package.
LTM4650 Product Family Selection Table
16mm × 16mm × 5.01mm BGA Package
LTM4650
APPLICATIONS
LTM4650-1B
Telecom and Networking Equipment
nn Storage and ATCA Cards
nn Industrial Equipment
nn
LTM6450-1A
LTM4650A
VIN
RANGE
VOUT
RANGE
4.5V to
15V
0.6V to
1.8V
4.5V to
16V
LTM4650A-1
EXTVCC
VIN
EFFICIENCY (%)
J
TRACK1
VFB1
VOUTS1
0.8%
Internal
0.6V to
5.5V
1%
External
90
K
PHASMD
25A × 2
95
L
MODE_PLLIN
1.5%
External
100
M
CLKOUT
SW1
Internal
DC VOUT
ACCURACY
3.3VOUT Efficiency vs IOUT
TOP VIEW
TEMP
COMPENSATION
IOUT
INTVCC
SW2
PGOOD1
PGOOD2
RUN2
DIFFOUT
DIFFP
DIFFN
H
G
RUN1
SGND
F
GND
COMP1 COMP2
E
SGND VFB2 TRACK2
D
GND
85
80
75
70
65
fSET SGND VOUTS2
12 VIN, 3.3VOUT, 600kHz
5 VIN, 3.3VOUT, 600kHz
0
10
C
B
VOUT1
VOUT2
GND
2
3
4
5
6
7
8
9
10
BGAPACKAGE
PACKAGE
BGA
144-LEAD (16mm × 16mm × 5.01mm)
144-LEAD (16mm × 16mm × 5.01mm)
LTM4650AEY
LTM4650AIY
40
50
4650A TA01b
50A, 3.3V Output DC/DC µModule Regulator
A
1
20
30
LOAD CURRENT (A)
11
12
INTVCC
VIN
4.5V TO 16V
22µF
25V
×4
0.1µF
10k
4.7µF
VIN
INTVCC
PGOOD
PGOOD1
PGOOD2
VOUT1
VOUTS1
120k
INTVCC
TEMP
TRACK1
TRACK2
f SET
DIFFOUT
VFB1
LTM4650A
COMP1
COMP2
PINS NOT USED IN
THIS CIRCUIT:
CLKOUT
EXTVCC
SW1
SW2
VOUTS2
Protected by U.S. Patents, including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066 and 6580258.
Other patents pending.
VFB2
RUN1
VOUT2
RUN2
PHASMD
DIFFN
DIFFP
SGND
GND
100µF
6.3V
+
470µF
6.3V
VOUT
3.3V/50A
13.3k
100µF
6.3V
+
470µF
6.3V
MODE_PLLIN
4650A TA01a
21
Low EMI µModule Regulators
EN55022 Class B Certified CISPR 22 Class B Compliant, or CISPR 25 Class 5 Compliant*
Photo: Medical Imaging Systems
CISPR 22 Class B Compliant, Silent Switcher® Step-Down µModule® Regulators
n
LTM ® 8073: 60VIN, 3A Continuous, 5A Peak
LTM8053: 40VIN, 3.5A Continuous, 6A Peak
BIAS
AUX
RUN
4.7µF
10mm
VOUT
5V
3.5A
VOUT
RT
41.2k
1MHz
GND
SYNC
FB
100µF
60.4k
15mm
Class B Limit
35
25
15
5
–5
*
5VOUT, 3.5A Load
14VIN, fSW = 1MHz
45
LTM8053
VIN
VIN
7V TO 40V
55
AMPLITUDE (dBuV/m)
n
0
200
400
600
FREQUENCY (MHz)
800
1000
LTM8053 Typical Application
DC1934A: LTM8053 Demo Board
CISPR 22 Class B Emissions
n
n
n
Requires Only Four External
Components
Standard
Solution Size Is Approximately 150mm2
n
DC1934A (LTM8053 Demo Board)
No EMI Filter
Content
Notes
EN55022
European Standard for EMC for Information Technology Equipment
Certified by TUV Rheinland (see EMC Test Reports**)
CISPR 25
International Standard for EMC for Automotive Products
Verified by Linear Technology
CISPR 22
International Standard for EMC for Information Technology Equipment
Verified by Linear Technology
** EMC Test Reports (EN55022 Class B): http://www.linear.com/designtools/packaging/umodule.php
L, LT, LTC, LTM, Linear Technology, the Linear logo, Silent Switcher and µModule are registered trademarks of
Analog Devices, Inc.. All other trademarks are the property of their respective owners.
Low EMI µModule Regulators
CISPR 25 Class 5 Compliant, Silent Switcher Step-Down Regulator
LTM8003: 40VIN, 3.5A Continuous/6A Peak with:
FMEA Compliant Pinout (LTM8003-3.3) Output Stays at or Below
Regulation Voltage During Adjacent Pin Short or if a Pin Is Left Floating
n 150°C Operation (H-Grade)
n Low Quiescent Current: 25µA (Typ)
n
40
AMPLITUDE (dBuV/m)
VIN
VIN
5V TO 40V
50
LTM8003-3.3
RUN
4.7µF
VOUT
3.3V
4A
VOUT
BIAS
RT
49.9k
850kHz
GND
20
10
0
100µF
SYNC
30
–10
fSW = 2MHz
IOUT = 3.5A
0
200
400
600
FREQUENCY (MHz)
800
1000
LTM8003 Typical Application
FMEA Compliant Pinout
CISPR 25 Class 5 Peak Radiated
n
n
n
3.3VOUT from 5VIN to 40VIN
Step-Down Converter
6.25mm × 9mm × 3.32mm BGA Package
n
Input Voltage (V) Output Voltage (V)
Part Number
Min
Max
Min
Max
IOUT (A)
Clock Sync
Range (MHz)
DC2416A (LTM8003 Demo Board)
VOUT = 5V, Spread Spectrum Enabled
Parallelable Output
Package
(Total IOUT)*
Dimensions (mm) Package
CISPR 22 Class B Compliant, Step-Down µModule Regulators
LTM8053
3.4
40
0.97
15
LTM8073
3.6
60
0.8
15
3.5 (Continuous)
6 (Peak)
3 (Continuous)
5 (Peak)
0.2 to 3
×2 (7A)
6.25 × 9 × 3.32
BGA
0.2 to 3
×2 (6A)
6.25 × 9 × 3.32
BGA
6.25 × 6.25 × 2.32
LGA
EN55022 Class B Certified, Step-Down µModule Regulators
LTM8020
4
36
1.2
5
0.2
–
–
LTM8031
3.6
36
0.8
10
1
LTM8032
3.6
36
0.8
10
LTM8033
3.6
36
0.8
LTM4623
4*
20
LTM4624
4*
14
LTM8021
LTM4612
3
5
36
36
0.8
0.25 to 2.0
–
×2 (2A)
6.25 × 11.25 × 2.82
2
0.25 to 2.0
×2 (4A)
9 × 15 × 2.82
9 × 15 × 3.42
LGA
BGA
24
3
0.25 to 2.0
×2 (6A)
0.6
5.5
3
0.56 to 4
×2 (6A)
0.6
5.5
4
6.25 × 6.25 × 1.82
6.25 × 6.25 × 2.42
LGA
BGA
3.3
5
15
0.5
–
-
9 × 15 × 2.82
11.25 × 15 × 4.32
11.25 × 15 × 4.92
LGA
LGA
LGA
BGA
5
0.18 to 1.3
×2 (10A)
-
6.25 × 6.25 × 5.01
BGA
15 × 15 × 2.82
15 × 15 × 3.42
LGA
BGA
15 × 15 × 2.82
LGA
LTM4606
4.5
28
0.6
5
6
0.7 to 1.1
×2 (12A)
LTM4613
5
36
3.3
15
8
0.18 to 1.3
×2 (16A)
15 × 15 × 4.32
15 × 15 × 4.92
LGA
BGA
0.2 to 3
–
6.25 × 9 × 3.32
BGA
CISPR 25 Class 5 Compliant, Step-Down µModule Regulator
LTM8003
3.4
40
0.97
18
3.5 (Continuous)
6 (Peak)
* Number of devices in parallel tested and verified by Linear Technology.
www.linear.com/umodule_lowemi n 1-800-4-LINEAR
0317A
µModule Regulators
LTM4650A-1
Dual 25A or Single 50A
DC/DC µModule Regulator with 1% DC Accuracy
FEATURES
DESCRIPTION
Dual 25A or Single 50A Output
nn Input Voltage Range: 4.5V to 16V
nn Output Voltage Range: 0.6V to 5.5V
nn ±1% Maximum Total DC Output Error Over Line, Load and
Temperature
nn Higher Light Load Efficiency and Wider V
OUT Range Than
LTM4650-1
nn Adjustable Control Loop Compensation
nn Differential Remote Sense Amplifier
nn Current Mode Control/Fast Transient Response
nn Multiphase Parallel Current Sharing Up to 300A
nn Internal Temperature Monitor
nn Adjustable Switching Frequency or Synchronization
nn Overcurrent Foldback Protection
nn Selectable Burst Mode Operation, Pulse-Skipping Mode
Operation
nn Soft-Start/Voltage Tracking
nn Output Overvoltage Protection
nn 16mm × 16mm × 5.01mm BGA Package
The LTM4650A-1 is a dual 25A or single 50A output switching
mode step-down DC/DC µModule (micromodule) regulator with
±1% total DC output error. Included in the package are the
switching controllers, power FETs, inductors and all supporting
components. Operating from an input voltage range of 4.5V to
16V, the LTM4650A-1 supports two outputs with an output voltage
range of 0.6V to 5.5V, each set by a single external resistor. Its
high efficiency design delivers up to 25A continuous current for
each output. Only a few input and output capacitors are needed.
Adjustable control loop compensation allows for fast transient
response to minimize output capacitance when powering FPGAs,
ASICs and processors.
nn
Fault protection features include overvoltage and overcurrent
protection. The LTM4650A-1 is offered in 16mm × 16mm × 5.01mm
BGA package.
LTM4650 Product Family Selection Table
LTM4650
APPLICATIONS
LTM4650-1B
Telecom and Networking Equipment
nn Storage and ATCA Cards
nn Industrial Equipment
nn
LTM6450-1A
LTM4650A
VIN
RANGE
VOUT
RANGE
4.5V to
15V
0.6V to
1.8V
4.5V to
16V
LTM4650A-1
EXTVCC
EFFICIENCY (%)
J
TRACK1
VFB1
VOUTS1
INTVCC
SW2
PGOOD1
PGOOD2
RUN2
DIFFOUT
DIFFP
DIFFN
H
G
RUN1
SGND
F
GND
COMP1 COMP2
E
SGND VFB2 TRACK2
D
0.8%
Internal
0.6V to
5.5V
1%
External
GND
65
2
3
4
5
6
7
8
12 VIN, 3.3VOUT, 600kHz
5 VIN, 3.3VOUT, 600kHz
0
10
20
30
LOAD CURRENT (A)
40
50
4650a1 TA01b
50A, 3.3V Output DC/DC µModule Regulator
VOUT2
GND
INTVCC
A
1
80
70
fSET SGND VOUTS2
VOUT1
85
75
C
B
9
10
BGAPACKAGE
PACKAGE
BGA
144-LEAD (16mm × 16mm × 5.01mm)
144-LEAD (16mm × 16mm × 5.01mm)
LTM4650AEY-1
LTM4650AIY-1
11
12
VIN
4.5V TO 16V
22µF
25V
×4
0.1µF
10k
4.7µF
VIN
INTVCC
PINS UNUSED IN
THIS APPLICATION:
CLKOUT
EXTVCC
SW1
SW2
VOUTS2
PGOOD
PGOOD1
PGOOD2
VOUT1
VOUTS1
120k
INTVCC
TEMP
TRACK1
TRACK2
f SET
COMP1
24
External
90
VIN
K
PHASMD
25A × 2
1.5%
95
L
MODE_PLLIN
Internal
100
M
CLKOUT
SW1
DC VOUT
ACCURACY
3.3VOUT Efficiency vs IOUT
TOP VIEW
TEMP
COMPENSATION
IOUT
RTH
CTH
DIFFOUT
VFB1
LTM4650A-1
COMP2
VFB2
RUN1
VOUT2
RUN2
PHASMD
DIFFN
DIFFP
SGND
GND
100µF
6.3V
+
470µF
6.3V
VOUT
3.3V/50A
13.3k
100µF
6.3V
+
470µF
6.3V
MODE_PLLIN
4650a1 TA01a
Protected by U.S. Patents, including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 6304066 and 6580258. Other patents pending.
µModule Regulators
LTM8073
60VIN, 3A Silent Switcher
µModule Regulator
FEATURES
DESCRIPTION
Complete Step-Down Switch Mode Power Supply
nn Low Noise Silent Switcher® Architecture
nn Wide Input Voltage Range: 3.4V to 60V
nn Wide Output Voltage Range: 0.8V to 15V
nn 3A Continuous Output Current, 5A Peak
nn Parallelable for Increased Output Current
nn Selectable Switching Frequency: 200kHz to 3MHz
nn Programmable Soft-Start
nn 6.25mm × 9mm × 3.32mm BGA Package
The LTM8073 is a 60VIN, 3A (continuous) or 5A (peak) step-down
Silent Switcher µModule (power module) regulator. Included in the
package are the switching controller, power switches, inductor
and all support components. Operating over an input voltage
range of 3.4V to 60V, the LTM8073 supports an output voltage
range of 0.8V to 15V and a switching frequency range of 200kHz
to 3MHz, each set by a single resistor. Only the input and output
filter capacitors are needed to finish the design.
nn
The low profile package enables utilization of unused space on
the bottom of PC boards for high density point of load regulation.
The LTM8073 is packaged in a thermally enhanced, compact
over-molded ball grid array (BGA) package suitable for automated
assembly by standard surface mount equipment. The LTM8073 is
RoHS compliant.
APPLICATIONS
Power for Portable Products
nn Distributed Supply Regulation
nn Industrial Supplies
nn Wall Transformer Regulation
nn
Efficiency,
BIAS
= 5V VOUT = 5V, BIAS = 5V
95
VIN = 24V
TOP VIEW
6
5
4
AUX
BIAS
3
2
1
EFFICIENCY (%)
BANK 2
VIN
RUN
GND
RT TR/SS
SHARE SYNC
BANK 1
BANK 3
GND
VOUT
PG
B
85
80
GND FB
A
90
C
D
E
F
G
0
1
2
LOAD CURRENT (A)
3
8073 TA01
H
BGA PACKAGE
48-LEAD (9mm × 6.25mm × 3.32mm)
LTM8073EY
LTM8073IY
5VOUT from 7VIN to 60VIN Step-Down Converter
LTM8073
VIN
VIN
7V TO 60V
BIAS
AUX
RUN
1µF
VOUT
5V
3A
VOUT
RT
32.4k
1.2MHz
GND
SYNC
FB
47.5k
100µF
8073 TA01a
PINS NOT USED IN THIS CIRCUIT: TR/SS, PG, SHARE
25
5kVRMS Isolated Switch
Controller with Telemetry
Adjustable Turn-On Ramp Rate, Circuit Breaker and 10-Bit ADC Monitoring
The LTM®9100 µModule® is an all-in-one solution for controlling, protecting, and monitoring high voltage power supplies up to
1000VDC. A 5kVRMS galvanic isolation barrier separates the digital interface from the switch controller, driving an external N-channel
MOSFET or IGBT switch. Isolated digital measurements of load current, bus voltage, and temperature are accessed via the I2C/
SMBus interface, enabling power and energy monitoring of the high voltage bus. The LTM9100 saves design time, certification effort,
and board area by wrapping all the needed functionality, including digital telemetry and isolated power, in a compact BGA package.
Features
n
n
n
n
n
n
Controls N-Channel MOSFET or IGBT Switch
Galvanically Isolated Switch Control
n 5kV
RMS for One Minute (UL 1577 Recognition Pending)
n 690V
RMS (1000VDC) Maximum Continuous Working Voltage
n ≥ 30kV/µs Common Mode Transient Immunity
n ±20kV HBM ESD Across Barrier
10-Bit ADC Measures Load Current and Two Voltage Inputs
I2C/SMBus Interface for Configuration and Data Readback
Integrated Isolated Power Supply
22mm × 9mm × 5.16mm BGA Package with 14.6mm Creepage
270V Load Soft-Start
EN
5V/DIV
100V/DIV
VLOAD
ILOAD
200mA/DIV
PG
5V/DIV
25ms/DIV
L, LT, LTC, LTM, Linear Technology, the Linear logo, µModule, and Linduino are registered trademarks,
Isolator logo, QuikEval and Anyside are trademarks of Analog Devices, Inc. All other trademarks are the
property of their respective owners.
Isolator µModule Technology
To achieve 5000VRMS isolation, the LTM9100 utilizes
Isolator µModule technology, which uses coupled-signal
inductors embedded in the µModule substrate. This
technique ensures consistent ruggedness and reliability,
and will be recognized by the UL 1577 standard to
guarantee a robust isolation barrier. The µModule
package integrates several technologies to deliver a
cost-effective, advanced solution that minimizes board
space and improves electrical and thermal performance.
Transformer
Isolated Power
Diodes
Decoupling
Capacitors
Isolators
Coupled Signal
Inductors
LDO
Application Die
Flexible Anyside™ Configuration
VIN
–VIN RTN
n
LTM9100
VEE
ISOLATION BARRIER
CONTROL
VL
GND
LOAD
LOAD
LTM9100
VEE
n
High Side (Positive) Application
CONTROL
ISOLATION BARRIER
GND
VIN RTN
VL
–VIN
Low Side (Negative) Application
Due to its isolated nature, the LTM9100 is easily configured for high side, low side (ground return) and floating applications.
Inrush current is minimized by soft-starting the load, and the supply is protected from overload and short-circuits with a currentlimited circuit breaker. The LTM9100 is versatile enough to control inrush current not just in hot-swappable cards, but also in
AC transformers, motor drives and inductive loads.
DC2423 Demo Board
Demonstration board DC2423 showcases the LTM9100
in either a typical 48V application (–A option) or in a
high voltage 380V application (–B). The board may
be configured for either high side or low side operation,
dependent on the connection of external supply and
load. The MOSFET is easily exchanged or replaced
due to screw terminal block mounting. DC2423 may
be controlled with individual signals or by computer
using the QuikEval™ system or Linduino® code.
www.linear.com/9100 n 1-800-4-LINEAR
0117
µModule Regulators
LTM9100
Anyside™ High Voltage Isolated Switch Controller
with I2C Command and Telemetry
FEATURES
DESCRIPTION
UL-CSA Recognition Pending: 5kVRMS for One Minute
nn Reinforced Insulation
nn Integrated Isolated Power Supply
nn Adjustable Turn-On Ramp Rate and Current Limit
nn I2C/SMBus Interface
nn 10-Bit ADC Monitors Current and Two
Uncommitted Channels
nn High Common Mode Transient Immunity: ≥ 30kV/μs
nn Fault Status Alert and Power Good Outputs
nn Independent 3V to 5.5V Logic Supply
nn ±20kV ESD Across the Isolation Barrier
nn Maximum Continuous Working Voltage: 690V
RMS
nn 14.6mm Creepage Distance
nn Low Current Shutdown Mode (<10µA)
nn 22mm × 9mm × 5.16mm BGA Package
The LTM9100 µModule (micromodule) controller is a complete,
galvanically isolated switch controller with I2C interface, for use as
a load switch or hot swap controller. The load is soft started and
controlled by an external N-channel MOSFET switch. Overcurrent
protection minimizes MOSFET stress during start-up, input step
and output short-circuit conditions. Owing to the isolated, floating
character of the switch, it is easily configured for use in high side,
low side and floating applications.
nn
A single 5V supply powers both sides of the switch controller
through an integrated, isolated DC/DC converter. A separate logic
supply input allows easy interfacing with logic levels from 3V to
5.5V, independent of the main supply. Isolated measurements of
load current and two additional voltage inputs are made by a 10-bit
ADC, and accessed via the I2C interface.
The logic and I2C interface is separated from the switch controller
by a 5kVRMS isolation barrier, making the LTM9100 ideal for systems
where the switch operates on buses up to 1000VDC, as well as
for providing galvanic isolation in systems where a ground path is
broken to allow large common mode voltage swings. Uninterrupted
communication is guaranteed for common mode transients of up to
30kV/μs.
APPLICATIONS
High Voltage DC Hot Swap
nn Live Backplane Insertion
nn Isolated Distributed Power Systems
nn Power Monitors
nn Industrial Control Systems
nn Breaking Ground Loops
nn
TOP VIEW
270V Load Soft-Start
7
VL
VS
VCC2
UVL
PGIO
ADIN
UVH
EN
5V/DIV
6
ON
VCC
VLOAD
100V/DIV
5
SCL
SCL2
VEE
ADIN2
OV
SDA
SDA2
ADR0
ADR1
RAMP
EN
EN2
TMR
DRAIN
ILOAD
200mA/DIV
4
PG
5V/DIV
3
25ms/DIV
2
ALERT2
SS
PG
GND
A
B
C
D
E
F
G
H
J
K
L
M
N
PG2
VEE
P
R
GATE
SENSE– SENSE+
S
T
Isolated High Side
Load Switch Driver
BGAPACKAGE
PACKAGE
BGA
42-LEAD(22mm
(22mm ×× 9mm
9mm ××5.16mm)
42-LEAD
5.16mm)
LTM9100CY
LTM9100IY
VCC2
UVH
UVL
5V
1.5k
GATE
ENABLE
PINS NOT USED IN THIS CIRCUIT:
ADIN, ADIN2, ADR0, ADR1, ALERT,
ALERT2, EN2, PG, PG2, PGIO, SCL2,
SDA2, SS, TMR, VS
28
VCC
VL
ON
SCL
SDA
EN
GND
RAMP
LTM9100
DRAIN
ISOLATION BARRIER
ALERT
1
9100 TA01b
GATE
SENSE+
SENSE–
1k
10nF, 400V
5%
270V
1M
Q1
FDA50N50
0.01Ω
1%
OV
VEE
LOAD(s)
100µF
400V
270V RTN
9100 TA01a
Switching Regulators—Monolithic
LT8315
560VIN Micropower No-Opto
Isolated Flyback Converter with 630V/300mA Switch
FEATURES
DESCRIPTION
Wide Input Voltage Range: 18V to 560V
nn 630V/300mA Integrated Power Switch
nn No Opto-Isolator Required for Regulation
nn Quasi-Resonant Boundary Mode Operation
nn Constant-Current and Constant-Voltage Regulation
nn Low Ripple, Light Load Burst Mode Operation
nn Low Quiescent Current: 70μA
nn Programmable Current Limit and Soft-Start
nn TSSOP Package with High Voltage Spacing
The LT8315 is a high voltage flyback converter with integrated
630V/300mA switch. No opto-isolator is needed for regulation.
The device samples the output voltage from the isolated flyback
waveform appearing across a third winding on the transformer.
Quasi-resonant boundary mode operation improves load regulation,
reduces transformer size and maintains high efficiency.
nn
At start-up, the LT8315 charges its INTVCC capacitor via a current
source attached to the DRAIN pin. During normal operation, the
current source turns off and the device draws its power from a third
winding on the transformer.
APPLICATIONS
The LT8315 operates from a wide range of input supply voltages
and can deliver up to 15W of power. It is available in a thermally
enhanced 20-lead TSSOP package with four pins removed for high
voltage spacing.
Isolated Telecom, Automotive, Industrial, Medical Power
Supplies
nn Isolated Offline Housekeeping Power Supplies
nn Electric Vehicles and Battery Stacks
nn
Efficiency
TOP VIEW
90
DRAIN 1
20 GND
DRAIN 2
19 NC
DRAIN 3
18 SOURCE
80
EFFICIENCY (%)
17 EN/UVLO
21
GND
16 SMODE
15 GND
14 IREG/SS
INTVCC 8
13 VC
BIAS 9
12 FB
DCM 10
11 TC
70
60
VIN = 50V
VIN = 100V
VIN = 150V
VIN = 250V
VIN = 350V
VIN = 450V
50
40
FE
FE PACKAGE
PACKAGE
20(16)-LEAD
(20)16-LEAD PLASTIC
PLASTIC TSSOP
TSSOP
30
LT8315EFE
LT8315IFE
LT8315HFE
0
100
200
300
400
LOAD CURRENT (mA)
500
8315 TA01b
20VIN to 450VIN Isolated 12VOUT Supply
VIN
20V TO 450V
0.44µF
5:1:2
600Ω
20k
93.1k
47pF
10µF
BIAS
FB
61.9k
INTVCC
SMODE
DRAIN
VC
100k
470pF
22nF
5.11k
TC
LT8315
10µF
160µH
DCM
EN/UVLO
VOUT+
12V
640µH
4mH
200µF
VOUT–
5mA to 220mA (VIN = 50V)
5mA to 320mA (VIN = 100V)
5mA to 380mA (VIN = 150V)
5mA to 440mA (VIN > 250V)
SOURCE
IREG/SS
GND
330mΩ
121k
8315 TA01a
29
Switching Regulators—Monolithic
LT8609S
42V, 2A/3A Peak Synchronous Step-Down
Regulator with 2.5µA Quiescent Current
FEATURES
DESCRIPTION
Silent Switcher 2 Architecture
nn Ultralow EMI/EMC Emissions on Any PCB
nn Eliminates PCB Layout Sensitivity
nn Internal Bypass Capacitors Reduce Radiated EMI
nn Optional Spread Spectrum Modulation
nn Wide Input Voltage Range: 3.0V to 42V
nn Ultralow Quiescent Current Burst Mode Operation:
nn <2.5µA I
Q Regulating 12VIN to 3.3VOUT
nn Output Ripple <10mV
P-P
nn High Efficiency 2MHz Synchronous Operation:
nn >93% Efficiency at 1A, 12V
IN to 5VOUT
nn 2A Maximum Continuous Output, 3A Peak Transient Output
nn Fast Minimum Switch-On Time: 45ns
nn Adjustable and Synchronizable: 200kHz to 2.2MHz
nn Allows Use of Small Inductors
nn Low Dropout
nn Peak Current Mode Operation
nn Internal Compensation
nn Output Soft-Start and Tracking
nn Small 16-Lead 3mm × 3mm LQFN Package
nn
The LT8609S is a compact, high efficiency, high speed synchronous
monolithic step-down switching regulator that consumes only 1.7µA
of non-switching quiescent current. The LT8609S can deliver 2A
of continuous current with peak loads of 3A (<1sec) to support
applications such as GSM transceivers which require high transient
loads. Top and bottom power switches are included with all
necessary circuitry to minimize the need for external components.
Low ripple Burst Mode operation enables high efficiency down
to very low output currents while keeping the output ripple below
10mVP-P. A SYNC pin allows synchronization to an external clock, or
spread spectrum modulation of switching frequencies for low EMI
operation. Internal compensation with peak current mode topology
allows the use of small inductors and results in fast transient
response and good loop stability. The EN/UV pin has an accurate 1V
threshold and can be used to program VIN undervoltage lockout or
to shut down the LT8609S reducing the input supply current to 1µA.
A capacitor on the TR/SS pin programs the output voltage ramp rate
during start-up while the PG flag signals when VOUT is within ±8.5%
of the programmed output voltage as well as fault conditions. The
LT8609S is available in a small 16-lead 3mm × 3mm LQFN package.
APPLICATIONS
General Purpose Step-Down
nn Low EMI Step-Down
nn
12VIN to 5VOUT Efficiency
100
95
90
2
GND
3
GND
4
TR/SS
GND
FB
13
17
GND
N/C
SW
5
6
7
EFFICIENCY (%)
VCC
14
N/C
85
80
75
70
12
PG
11
EN/UV
10
VIN
55
9
VIN
50
65
60
fSW = 2MHz
0
0.50
8
GND
1
15
SW
RT
16
N/C
N/C
SYNC
TOP VIEW
LQFN
LQFN PACKAGE
PACKAGE
16-LEAD
(3mm
× 3mm)
LQFN
16-LEAD
(3mm
× 3mm)
LT8609SEV
LT8609SIV
1.50
1.00
IOUT (A)
2.00
2.50
8609S TA01b
N/C
5V, 2MHz Step-Down
VIN
5.5V TO 40V
4.7µF ON OFF
1µF
18.2k
VIN
EN/UV
SW
SYNC
LT8609S
INTVCC
PG
TR/SS
FB
RT
GND
2.2µH
VOUT
5V
2A
10pF
1M
22µF
182k
8609S TA01a
30
Switching Regulators—Monolithic
LT8640S/LT8643S
42V, 6A Synchronous Step-Down
Silent Switcher 2 with 2.5µA Quiescent Current
FEATURES
DESCRIPTION
The LT8640S/LT8643S synchronous step-down regulator features
second generation Silent Switcher architecture designed to
minimize EMI/EMC emissions while delivering high efficiency at
high switching frequencies. This includes the integration of bypass
capacitors to optimize all the fast current loops inside and make
it easy to achieve advertised EMI performance by reducing layout
sensitivity. This performance makes the LT8640S/LT8643S ideal for
noise-sensitive applications and environments.
Silent Switcher 2 Architecture
nn Ultralow EMI/EMC Emissions on Any PCB
nn Eliminates PCB Layout Sensitivity
nn Internal Bypass Capacitors Reduce Radiated EMI
nn Optional Spread Spectrum Modulation
nn High Efficiency at High Frequency
nn Up to 96% Efficiency at 1MHz, 12V
IN to 5VOUT
nn Up to 95% Efficiency at 2MHz, 12V
IN to 5VOUT
nn Wide Input Voltage Range: 3.4V to 42V
nn 6A Maximum Continuous, 7A Peak Output
nn Ultralow Quiescent Current Burst Mode Operation
nn 2.5µA I
Q Regulating 12VIN to 3.3VOUT (LT8640S)
nn Output Ripple < 10mV
P-P
nn External Compensation: Fast Transient Response and
Current Sharing (LT8643S)
nn Fast Minimum Switch On-Time: 30ns
nn Low Dropout Under All Conditions: 100mV at 1A
nn Forced Continuous Mode
nn Adjustable and Synchronizable: 200kHz to 3MHz
nn Output Soft-Start and Tracking
nn Small 24-Lead 4mm × 4mm LQFN Package
nn
The fast, clean, low overshoot switching edges enable high
efficiency operation even at high switching frequencies, leading
to a small overall solution size. Peak current mode control with a
30ns minimum on-time allows high step-down ratios even at high
switching frequencies. A CLKOUT pin enables synchronizing other
regulators to the LT8640S/LT8643S.
Burst Mode operation enables ultralow standby current
consumption, forced continuous mode can control frequency
harmonics across the entire output load range, or spread spectrum
operation can further reduce EMI/EMC emissions. Soft-start
and tracking functionality is accessed via the TR/SS pin, and an
accurate input voltage UVLO threshold can be set using the EN/UV
pin.
APPLICATIONS
Automotive and Industrial Supplies
nn General Purpose Step-Down
5V 6A Step-Down Converter
nn
3.3µH
VIN
5.7V TO 42V
VIN
4.7µF
EN/UV
BIAS
LT8640S
RT
10pF
PG
GND
TR/SS
SYNC/MODE
CLKOUT
FB
PG
VC
TR/SS
SYNC/MODE
CLKOUT
22
21
20
19
24
23
22
21
20
19
9
10
11
12
GND
3
15 NC
NC
4
14 VIN
VIN
5
13 VIN
VIN
6
LQFN PACKAGE
LQFN PACKAGE
24-LEAD (4mm
× 4mm × 0.94mm)
24-LEAD (4mm × 4mm × 0.94mm)
LT8640SEV
LT8640SIV
27
GND
18 RT
95
17 EN
90
16 GND
15 NC
28
GND
14 VIN
13 VIN
7
8
9
10
11
12
SW
8
2
26
GND
SW
7
INTVCC
25
GND
SW
6
28
GND
1
SW
VIN
27
GND
BIAS
SW
5
SW
VIN
16 GND
SW
4
SW
3
NC
SW
GND
17 EN
SW
2
26
GND
100
LQFN PACKAGE
LQFN PACKAGE
24-LEAD (4mm
× 4mm × 0.94mm)
24-LEAD (4mm × 4mm × 0.94mm)
LT8643SEV
LT8643SIV
12V
toOUT
5VEfficiency
12V
IN 5V
OUT Efficiency
IN to
3.2
2.8
2.4
EFFICIENCY
85
2.0
80
1.6
1.2
75
POWER LOSS
POWER LOSS (W)
INTVCC
25
GND
BST
18 RT
1
8640S TA01a
EFFICIENCY (%)
FB
23
BST
BIAS
24
100µF
243k
GND
fSW = 1MHz
TOP VIEW
1M
FB
41.2k
TOP VIEW
VOUT
5V
6A
SW
0.8
1MHz, L = 3.3µH
65
2MHz, L = 2.2µH 0.4
3MHz, L = 1µH
0
60
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
LOAD CURRENT (A)
70
8640S TA01b
31
Switching Regulators—Monolithic
LT8645S
65V, 8A Synchronous Step-Down
Silent Switcher 2 with 2.5µA Quiescent Current
FEATURES
DESCRIPTION
Silent Switcher 2 Architecture
nn Ultralow EMI/EMC Emissions on Any PCB
nn Eliminates PCB Layout Sensitivity
nn Internal Bypass Capacitors Reduce Radiated EMI
nn Optional Spread Spectrum Modulation
nn High Efficiency at High Frequency
nn Up to 95% Efficiency at 1MHz, 12V
IN to 5VOUT
nn Up to 94% Efficiency at 2MHz, 12V
IN to 5VOUT
nn Wide Input Voltage Range: 3.4V to 65V
nn Ultralow Quiescent Current Burst Mode Operation
nn 2.5μA I
Q Regulating 12VIN to 3.3VOUT
nn Output Ripple < 10mV
P-P
nn Fast Minimum Switch On-Time: 40ns
nn Low Dropout Under All Conditions: 60mV at 1A
nn Safely Tolerates Inductor Saturation in Overload
nn Adjustable and Synchronizable: 200kHz to 2.2MHz
nn Peak Current Mode Operation
nn Output Soft-Start and Tracking
nn Small 32-Lead 6mm × 4mm LQFN Package
The LT8645S synchronous step-down regulator features second
generation Silent Switcher architecture designed to minimize EMI/
EMC emissions while delivering high efficiency at high switching
frequencies. This includes the integration of bypass capacitors to
optimize all the fast current loops inside and make it easy to achieve
advertised EMI performance by eliminating layout sensitivity.
This performance makes the LT8645S ideal for noise sensitive
applications and environments.
nn
The fast, clean, low overshoot switching edges enable high
efficiency operation even at high switching frequencies, leading
to a small overall solution size. Peak current mode control with a
40ns minimum on-time allows high step down ratios even at high
switching frequencies.
Burst Mode operation enables ultralow standby current
consumption, pulse-skipping mode allows full switching frequency
at lower output loads, or spread spectrum operation can further
reduce EMI/EMC emissions. Soft-start and tracking functionality is
accessed via the TR/SS pin, and an accurate input voltage UVLO
threshold can be set using the EN/UV pin. A CLKOUT pin enables
synchronizing other regulators to the LT8645S.
APPLICATIONS
Automotive and Industrial Supplies
nn General Purpose Step-Down
nn GSM Power Supplies
nn
12VIN to 5VOUT Efficiency
TOP VIEW
PG
GND
TR/SS
SYNC/MODE
CLKOUT
29
28
27
BIAS
1
INTVCC
2
NC
3
VIN
4
23 VIN
VIN
5
22 VIN
VIN
6
NC
7
GND
8
GND
9
GND
10
EFFICIENCY (%)
FB
30
26 RT
3.5
85
2.5
80
2.0
1.5
75
70
POWER LOSS
65
24 NC
36
GND
1.0
60
1
2
1MHz, L = 2.2µH 0.5
2MHz, L = 1µH
0
3
4
5
6
7
8
LOAD CURRENT (A)
8645S TA01b
21 VIN
5V 8A Step-Down Converter
20 NC
19 GND
38
GND
18 GND
11
12
13
14
15
16
BST
SW
SW
SW
SW
SW
17 GND
LQFN PACKAGE
× 4mm ×× 0.94mm)
32-LEAD (6mm ×
LT8645SEV
LT8645SIV
VIN
5.5V TO 65V
2.2µH
VIN
4.7µF
BIAS
LT8645S
RT
41.2k
VOUT
5V
8A
SW
EN/UV
2.2pF
1M
100µF
FB
GND
243k
8645S TA01a
fSW = 1MHz
32
3.0
EFFICIENCY
25 EN/UV
34
GND
37
GND
95
POWER LOSS (W)
31
35
GND
4.0
90
32
33
GND
100
Switching Regulators—Controller
LTC1871X
Wide Input Range, No RSENSE
Current Mode Boost, Flyback and SEPIC Controller
FEATURES
DESCRIPTION
High Efficiency (No Sense Resistor Required)
nn Wide Input Voltage Range: 2.5V to 36V
nn Current Mode Control Provides Excellent Transient
Response
nn High Maximum Duty Cycle (92% Typ)
nn ±2% RUN Pin Threshold with 100mV Hysteresis
nn ±2% Internal Voltage Reference
nn Micropower Shutdown: I
Q = 10μA
nn Programmable Operating Frequency (65kHz to 900kHz) with
One External Resistor
nn Synchronizable to an External Clock Up to 1.3 × f
OSC
nn User-Controlled Pulse-Skipping or Burst Mode Operation
nn Internal 5.2V Low Dropout Voltage Regulator
nn Output Overvoltage Protection
nn Capable of Operating with a Sense Resistor for High Output
Voltage Applications
nn Small 10-Lead MSOP Package
LTC1871X is a wide input range, current mode, boost, flyback
or SEPIC controller that drives an N-channel power MOSFET.
LTC1871X is rated to 175°C junction temperature and is 100%
tested at 175°C. Intended for low to medium power applications,
it eliminates the need for a current sense resistor by utilizing the
power MOSFET’s on-resistance, thereby maximizing efficiency.
nn
The IC’s operating frequency can be set with an external resistor
over a 65kHz to 900kHz range, and can be synchronized to an
external clock using the MODE/SYNC pin. Burst Mode operation
at light loads, a low minimum operating supply voltage of 2.5V and
a low shutdown quiescent current of 10μA make the LTC1871X
ideally suited for battery-operated systems.
For applications requiring constant frequency operation, Burst
Mode operation can be defeated using the MODE/SYNC pin. Higher
output voltage boost, SEPIC and flyback applications are possible
with the LTC1871X by connecting the SENSE pin to a resistor in
the source of the power MOSFET. The LTC1871X is available in the
10-lead MSOP package.
APPLICATIONS
Telecom Power Supplies
nn Portable Electronic Equipment
nn
FB Voltage vs Temperature
1.250
TOP VIEW
1.245
1
2
3
4
5
10
9
8
7
6
SENSE
VIN
INTVCC
GATE
GND
1.240
FB VOLTAGE (V)
RUN
ITH
FB
FREQ
MODE/SYNC
MS PACKAGE
MS PACKAGE
10-LEAD PLASTIC MSOP
10-LEAD PLASTIC MSOP
LTC1871XMS
1.235
1.230
1.225
1.220
1.215
1.210
–50 –25 0
25 50 75 100 125 150 175 200
TEMPERATURE (°C)
1871x F01b
High Efficiency 5V Input, 12V Output Boost Converter (Bootstrapped)
VIN
5V
100µF
6.3V
10µH
SENSE
ITH LTC1871X VIN
RUN
INTVCC
33.2k
MODE/SYNC
4.7µF
10nF
80.6k
GATE
110k
FB
FREQ
GND
12.4k
1871x F01
VOUT
12V
2A
47µF
25V
×8
GND
33
System Monitor and Control
LTC4368
100V UV/OV and Reverse Protection
Controller with Bidirectional Circuit Breaker
FEATURES
DESCRIPTION
Wide Operating Voltage Range: 2.5V to 60V
nn Overvoltage Protection to 100V
nn Reverse Supply Protection to –40V
nn Bidirectional Electronic Circuit Breaker:
nn +50mV Forward Sense Threshold
nn –50mV Reverse (LTC4368-1)
nn –3mV Reverse (LTC4368-2)
nn Adjustable ±1.5% Undervoltage and Overvoltage Thresholds
nn Low Operating Current: 80µA
nn Low Shutdown Current: 5µA
nn Controls Back-to-Back N-Channel MOSFETs
nn Blocks 50Hz and 60Hz AC Power
nn Hot-Swappable Supply Input
nn Pin-Selectable Overcurrent Auto-Retry Timer or Latchoff
nn 10-Lead MSOP and 3mm × 3mm DFN Packages
The LTC4368 protects applications from power supply voltages that
may be too high, too low, or even negative and from overcurrent
faults in both forward and reverse directions. The LTC4368 controls
the gate voltage of a pair of external N-channel MOSFETs to ensure
that the load is connected to the input supply only when there are
no voltage or current faults.
nn
Two comparator inputs allow configuration of the overvoltage (OV)
and undervoltage (UV) set points using an external resistive divider.
A current sense resistor sets the forward and reverse circuit breaker
current thresholds. After a forward current fault, the LTC4368 will
either latch off power, or retry after a user adjustable delay. After a
reverse current fault, the LTC4368 waits for the output to fall 100mV
below the input to reconnect power to the load.
The LTC4368 has a 32ms turn-on delay that debounces live supply
input connections and blocks 50Hz and 60Hz AC power. UV/OV
faults also trigger the 32ms recovery delay before the external
MOSFETs are turned back on.
APPLICATIONS
Reverse Battery Protection
nn Portable Instrumentation
nn Automotive and Industrial Surge Protection
nn Energy Storage Systems
nn
Load Protected from Reverse and Overvoltage at VIN
+70V
20V/DIV
OV = 36V
UV = 7V
VIN
TOP VIEW
VIN
1
10 GATE
UV
2
9 SENSE
OV
3
RETRY
4
8 VOUT
7 FAULT
GND
5
6 SHDN
DD PACKAGE
PACKAGE
DD
10-LEAD (3mm
(3mm ×× 3mm)
3mm) PLASTIC
PLASTIC DFN
DFN
10-LEAD
LTC4368CDD-1
LTC4368CDD-2
LTC4368IDD-1
LTC4368IDD-2
LTC4368HDD-1
LTC4368HDD-2
VALID WINDOW
GND
VOUT
VOUT
–40V
20V/DIV
VIN
4368 TA01b
200ms/DIV
24V Application with 10A Circuit Breaker
+50mV
VIN
24V
TOP VIEW
VIN
UV
OV
RETRY
GND
1
2
3
4
5
10
9
8
7
6
MS10 PACKAGE
10-LEAD PLASTIC MSOP
LTC4368CMS-1
LTC4368CMS-2
LTC4368IMS-1
LTC4368IMS-2
LTC4368HMS-1
LTC4368HMS-2
GATE
SENSE
VOUT
FAULT
SHDN
–40V TO 100V
SiR870
SiR870
0.005Ω
INRUSH
CONTROL
22k
VOUT
7V TO 36V
–3mV
+
100µF
3.3nF
VIN
GATE
SENSE
VOUT
464k
FAULT
SHDN
1500k
OV = 36V
UV = 7V
UV
LTC4368-2
121k
OV
29.4k
RETRY
GND
1200ms COOLDOWN
AFTER FORWARD
OC FAULT
0.22µF
4368 TA01a
34
IOUT
–0.6A TO 10A
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