February 2017 New Products Catalog High Performance Analog ICs LTC2944 60V Battery Gas Gauge with Temperature, Voltage and Current Measurement LTC2358-16 Buffered Octal, 16-Bit, 200ksps/Ch Differential ±10.24V ADC with 30VP-P Common Mode Range LTC5566 300MHz to 6GHz Dual Programmable Gain Downconverting Mixer LTM4636 40A DC/DC µModule Regulator LTC3119 18V, 5A Synchronous Buck-Boost DC/DC Converter LT8390 60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum Contents Amplifiers LTC®6261/LTC6262/LTC6263 30MHz, 240µA Power Efficient Rail-to-Rail I/O Op Amps......................................................................................1 Coulomb Counter LTC2944 60V Battery Gas Gauge with Temperature, Voltage and Current Measurement......................................................................................3 Data Converters LTC2310-12 12-Bit + Sign, 2Msps Differential Input ADC with Wide Input Common Mode Range......................................................................4 LTC2310-14 14-Bit + Sign, 2Msps Differential Input ADC with Wide Input Common Mode Range......................................................................5 LTC2320-16 Octal, 16-Bit, 1.5Msps/Ch Simultaneous Sampling ADC..................................................................................................................6 LTC2341-16 Dual, 16-Bit, 666ksps/Ch Differential SoftSpan™ ADC with Wide Input Common Mode Range.......................................................7 LTC2341-18 Dual, 18-Bit, 666ksps/Ch Differential SoftSpan ADC with Wide Input Common Mode Range..........................................................8 LTC2358-16 Buffered Octal, 16-Bit, 200ksps/Ch Differential ±10.24V ADC with 30VP-P Common Mode Range...................................................9 LTC2374-16 16-Bit, 1.6Msps, 8-Channel SAR ADC with 96dB SNR...................................................................................................................10 LTC2512-24 24-Bit Oversampling ADC with Configurable Flat Passband Digital Filter.......................................................................................11 High Frequency LTC5566 300MHz to 6GHz Dual Programmable Gain Downconverting Mixer....................................................................................................12 Interface LTM®2885 6500VRMS Isolated RS485/RS422 µModule® Transceiver + Power ...................................................................................................13 LTM2887 SPI/Digital or I2C µModule Isolator with Dual Adjustable 5V Regulators............................................................................................14 Power over Ethernet Controller LTC4279 Single Port PoE/PoE+/LTPoE++® PSE Controller..................................................................................................................................16 μModule Regulators LTM4636 40A DC/DC µModule Regulator...........................................................................................................................................................17 LTM4647 30A DC/DC Step-Down µModule Regulator........................................................................................................................................18 Contents Switching Regulators—Monolithic LTC3119 18V, 5A Synchronous Buck-Boost DC/DC Converter...........................................................................................................................20 LT®8606 42V, 350mA Synchronous Step-Down Regulator with 2.5µA Quiescent Current.................................................................................21 LT8607 42V, 750mA Synchronous Step-Down Regulator with 2.5µA Quiescent Current...................................................................................22 LT8630 100V, 0.6A Synchronous Micropower Step‑Down High Efficiency Switching Regulator.......................................................................23 Switching Regulators—Controllers LTC3897 PolyPhase® Synchronous Boost Controller with Input/Output Protection............................................................................................24 LT8390 60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum............................................................................................25 LT8705A 80V VIN and VOUT Synchronous 4-Switch Buck-Boost DC/DC Controller.............................................................................................26 Design Notes DN557 Low EMI LED Driver Features 2A, 40V, Integrated, Synchronous Switches for Automotive Lighting DN558 Bidirectional DC/DC Regulator and Supercapacitor Charger 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 Linear Technology Corporation. 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 ∆Σ, 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, VRS and the Isolator logo are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Amplifiers LTC6261/LTC6262/LTC6263 30MHz, 240µA Power Efficient Rail-to-Rail I/O Op Amps FEATURES DESCRIPTION Gain-Bandwidth Product: 30MHz nn Low Quiescent Current: 240µA nn Op Amp Drives Up to 1nF Capacitive Loads nn Offset Voltage: 400µV Maximum nn Rail-to-Rail Input and Output nn Supply Voltage Range: 1.8V to 5.25V nn Input Bias Current: 200nA Maximum nn CMRR/PSRR: 100dB/95dB nn Shutdown Current: 9µA Maximum nn Operating Temperature Range: –40°C to 125°C nn Single in 2mm × 2mm DFN Packages nn Dual in 8-Lead MS8, MS10, TS0T-23, 2mm × 2mm DFN Packages nn Quad in MS16 Package The LTC6261/LTC6262/LTC6263 are single/dual/quad operational amplifiers with low noise, low power, low supply voltage, and rail-to-rail inputs and outputs. They are unity gain stable with capacitive loads up to 1nF. They feature 30MHz gain-bandwidth product, 7V/µs slew rate while consuming only 240µA 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 LTC6261 family unique among rail-to-rail input/output op amps with similar supply current. These operational amplifiers are ideal for low power and low noise applications. nn For applications that require power-down, the LTC6261 in 2mm × 2mm DFN and LTC6262 in MSOP-10 packages offer shutdown which reduces the current consumption to 9µA maximum. The LTC6261 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 nn LTC6261 Driving LTC2362 ADC 0 TOP VIEW 6 OUT 7 V– +IN 2 V– 3 5 –IN 4 SHDN DC PACKAGE PACKAGE 6-LEAD (2mm ×(2mm 2mm × 2mm 0.8mm) PLASTIC DFN 6-LEAD × 0.8mm) PLASTIC DFN –INA 2 –30 7 OUTB 9 V– +INA 3 V– –20 8 V+ OUTA 1 MAGNITUDE (dB) V+ 1 6 –INB 5 +INB 4 DC DCPACKAGE PACKAGE 8-LEAD (2mm ×(2mm 2mm ×× 0.8mm) 8-LEAD 2mm ×PLASTIC 0.8mm)DFN PLASTIC DFN LTC6261IDC LTC6261HDC VIN = –1dBFS, 5kHz fS = 250ksps SNR = 72dB THD = –83.6dB SFDR = 86dB –10 TOP VIEW –40 –50 –60 –70 –80 –90 LTC6262IDC LTC6262HDC –100 –110 –120 TOP VIEW 1 2 3 4 – + 7 OUTB 6 –INB 5 +INB TOP VIEW OUTA –INA +INA V– 1 2 3 4 – + 8 7 6 5 + – + – OUTA –INA +INA V– 8 V+ V+ OUTB –INB +INB TS8 PACKAGE TS8 PACKAGE 8-LEAD PLASTIC PLASTIC TSOT-23 8-LEAD TSOT-23 MS8 PACKAGE MS8 PACKAGE 8-LEAD PLASTIC 8-LEAD PLASTICMSOP MSOP LTC6262ITS8 LTC6262HTS8 LTC6262IMS8 LTC6262HMS8 1 2 3 4 5 – + + – OUTA –INA +INA V– SHDNA 10 9 8 7 6 V+ OUTB –INB +INB SHDNB – + + – + – TOP VIEW 1 2 3 4 5 6 7 8 + – 16 15 14 13 12 11 10 9 MS PACKAGE MS PACKAGE 10-LEAD PLASTIC 10-LEAD PLASTICMSOP MSOP MS PACKAGE MS PACKAGE 16-LEAD PLASTIC 16-LEAD PLASTICMSOP MSOP LTC6262IMS LTC6262HMS LTC6263IMS LTC6263HMS 10 20 30 40 FREQUENCY (kHz) 50 60 626123 TA01b Low Power, Low Distortion ADC Driver CF1 10pF RF1 1.74k TOP VIEW OUTA –INA +INA V+ +INB –INB OUTB NC 0 OUTD –IND +IND V– +INC –INC OUTC NC RF2 2.74k 3.3V – LTC6261 IN 3.3V + U1 RFILT 100Ω VDD OUT CFILT 10nF AIN VREF LTC2362 GND CS SDO SCK OVDD 626123 TA01a 1 60V Battery Gas Gauge The LTC®2944 multicell battery gas gauge makes direct measurements of 3.6V to 60V battery stacks. Absolutely no level shifting circuitry is required to interface with multicell voltages, minimizing current consumption and preserving measurement accuracy. The LTC2944 is a true high voltage gas gauge that measures charge, voltage, current and temperature to within 1% accuracy — all of the essential parameters required to accurately assess battery state of charge (SOC). Total Charge Error vs Differential Sense Voltage Features n n n n n n n Measures Accumulated Battery Charge and Discharge 3.6V to 60V Operating Range for Multicell Applications 16-Bit ADC Measures Voltage, Current and Temperature 1% Charge, Voltage, Current and Temperature Accuracy I2C/SMBus Interface Configurable Alert Output/Charge Complete Input Quiescent Current <150µA Small 8-Pin 3mm × 3mm DFN Package 2.0 VSENSE+ = 30V 1.5 CHARGE ERROR (%) n 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 Battery Gas Gauges and Power Monitors Interface Integrated Sense Resistor LTC2941/LTC2941-1 2.7 to 5.5 I 2C –/1A • LTC2942/LTC2942-1 2.7 to 5.5 I 2C –/1A • LTC2943/LTC2943-1 3.6 to 20 I 2C –/1A LTC2944 3.6 to 60 I2C LTC4151 7 to 80 I2C LTC2945 0 to 80 I2C LTC2946 0 to 100 I2C LTC2947 0 to 15 2C LTC4150 2.7 to 8.5 I Interrupt 100 Measures Energy • 30A 10 VSENSE (mV) Operating Range (V) Part Number 1 0.1 • Charge Power Voltage Current • Temperature • • • • • • • • • • • • • • • • • • • • • • • • • L, 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. Coulomb Counter LTC2944 60V Battery Gas Gauge with Temperature, Voltage and Current Measurement FEATURES DESCRIPTION Measures Accumulated Battery Charge and Discharge nn 3.6V to 60V Operating Range for Multiple Cells nn 14-Bit ADC Measures Voltage, Current and Temperature nn 1% Voltage, Current and Charge Accuracy nn ±50mV Sense Voltage Range nn High Side Sense nn I2C Interface/SMBus Interface nn General Purpose Measurements for Any Battery Chemistry and Capacity nn Configurable Alert Output/Charge Complete Input nn Quiescent Current Less Than 150µA nn Small 8-Lead 3mm × 3mm DFN Package The LTC2944 measures battery charge state, battery voltage, battery current and its own temperature in portable product applications. The wide input voltage range allows use with multicell batteries up to 60V. A precision coulomb counter integrates current through a sense resistor between the battery’s positive terminal and the load or charger. Voltage, current and temperature are measured with an internal 14-bit No Latency ΔΣ™ ADC. The measurements are stored in internal registers accessible via the onboard I2C/SMBus Interface. nn The LTC2944 features programmable high and low thresholds for all four measured quantities. If a programmed threshold is exceeded, the device communicates an alert using either the SMBus alert protocol or by setting a flag in the internal status register. The LTC2944 requires only a single low value sense resistor to set the measured current range. APPLICATIONS Electric and Hybrid Electric Vehicles nn Power Tools nn Electric Bicycles, Motorcycles, Scooters nn High Power Portable Equipment nn Photo Voltaics nn Backup Battery Systems nn Total Charge Error vs Differential Sense Voltage 3 2 1 GND 2 GND 3 SCL 4 CHARGE ERROR (%) TOP VIEW SENSE+ 8 SENSE– 9 VSENSE+ = 3.6V TO 60V 7 GND 6 ALCC 5 SDA 1 0 –1 –2 DD PACKAGE 8-LEAD (3mm × 3mm) PLASTIC DFN LTC2944CDD LTC2944IDD –3 0.1 1 10 100 VSENSE (mV) 2944 TA01b 1A LOAD CHARGER 3.3V 1µF 2k 2k LTC2944 2k VDD ALCC µP SDA SENSE+ SENSE– SCL GND RSENSE 50mΩ + MULTICELL Li-ION 2944 TA01a 3 Data Converters LTC2310-12 12-Bit + Sign, 2Msps Differential Input ADC with Wide Input Common Mode Range FEATURES DESCRIPTION 2Msps Throughput Rate nn ±1LSB INL Guaranteed nn Guaranteed 12-Bit, No Missing Codes nn 8V P-P Differential Inputs with Wide Input Common Mode Range nn 73dB SNR (Typ) at f IN = 500kHz nn –85dB THD (Typ) at f IN = 500kHz nn No Cycle Latency nn Guaranteed Operation –40°C to 125°C nn Single 3.3V or 5V Supply nn Low Drift (20ppm/°C Max) 2.048V or 4.096V Internal Reference with 1.25V External Reference Input nn 1.8V to 2.5V I/O Voltages nn CMOS or LVDS SPI-Compatible Serial I/O nn Power Dissipation 35mW at V DD = 5V (Typ) nn Small 16-Lead (4mm × 5mm) MSOP Package The LTC2310-12 is a low noise, high speed 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 LTC2310-12 has an 8VP-P differential input range, making it ideal for applications which require a wide dynamic range with high common mode rejection. The LTC2310-12 achieves ±1LSB INL guaranteed, no missing codes at 12 bits and 73dB SNR typical. nn The LTC2310-12 has an onboard low drift (20ppm/°C max) 2.048V or 4.096V temperature compensated reference and provides an external 1.25V buffered reference input. The LTC2310-12 also has a high speed SPI-compatible serial interface that supports CMOS or LVDS. The fast 2Msps throughput with no cycle latency makes the LTC2310-12 ideally suited for a wide variety of high speed applications. The LTC2310-12 dissipates only 35mW with a 5V supply and offers nap and sleep modes to reduce the power consumption for further power savings during inactive periods. APPLICATIONS High Speed Data Acquisition Systems Communications nn Remote Data Acquisition nn Imaging nn Optical Networking nn Automotive nn Multiphase Motor Control nn 32k Point FFT fSMPL = 2Msps, fIN = 500kHz nn 0 AMPLITUDE (dBFS) TOP VIEW GND REFIN REFOUT VDD GND AIN+ AIN– GND 1 2 3 4 5 6 7 8 17 GND 16 15 14 13 12 11 10 9 SNR = 73.6dB THD = –87dB SINAD = 73.4dB SFDR = 92dB –20 SCK+ SCK– SDO+ SDO– –40 –60 –80 –100 –120 OVDD GND CMOS/LVDS CNV –140 0 0.2 0.4 0.6 FREQUENCY (MHz) 0.8 1.0 231012 TA01b MSE PACKAGE 16-LEAD (4mm × 5mm) PLASTIC MSOP LTC2310CMSE-12 LTC2310IMSE-12 LTC2310HMSE-12 3.3V OR 5V DIFFERENTIAL INPUTS NO CONFIGURATION REQUIRED IN+, IN – VDD ARBITRARY 0V VDD VDD 1µF DIFFERENTIAL 25Ω VDD VDD REFOUT LTC2310-12 0V BIPOLAR AIN+ REFIN 47pF UNIPOLAR 25Ω 10µF SDO SCK AIN– CMOS/LVDS 0V 0V 10µF GND LVDS OR CMOS CONFIGURABLE I/O CNV OVDD 1.8V TO 2.5V 1µF 231012 TA01a 4 Data Converters LTC2310-14 14-Bit + Sign, 2Msps Differential Input ADC with Wide Input Common Mode Range FEATURES DESCRIPTION 2Msps Throughput Rate nn ±2.5LSB INL Guaranteed nn Guaranteed 14-Bit, No Missing Codes nn 8V P-P Differential Inputs with Wide Input Common Mode Range nn 82dB SNR (Typ) at f IN = 500kHz nn –93dB THD (Typ) at f IN = 500kHz nn No Cycle Latency nn Guaranteed Operation –40°C to 125°C nn Single 3.3V or 5V Supply nn Low Drift (20ppm/°C Max) 2.048V or 4.096V Internal Reference with 1.25V External Reference Input nn 1.8V to 2.5V I/O Voltages nn CMOS or LVDS SPI-Compatible Serial I/O nn Power Dissipation 35mW at V DD = 5V (Typ) nn Small 16-Lead (4mm × 5mm) MSOP Package The LTC2310-14 is a low noise, high speed 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 LTC2310-14 has an 8VP-P differential input range, making it ideal for applications which require a wide dynamic range with high common mode rejection. The LTC2310‑14 achieves ±2.5LSB INL guaranteed, no missing codes at 14 bits and 82dB SNR typical. nn The LTC2310-14 has an onboard low drift (20ppm/°C max) 2.048V or 4.096V temperature compensated reference and provides an external 1.25V buffered reference input. The LTC2310-14 also has a high speed SPI-compatible serial interface that supports CMOS or LVDS. The fast 2Msps throughput with no cycle latency makes the LTC2310-14 ideally suited for a wide variety of high speed applications. The LTC2310-14 dissipates only 35mW with a 5V supply and offers nap and sleep modes to reduce the power consumption for further power savings during inactive periods. APPLICATIONS High Speed Data Acquisition Systems Communications nn Remote Data Acquisition nn Imaging nn Optical Networking nn Automotive nn Multiphase Motor Control nn 32k Point FFT fSMPL = 2Msps, fIN = 500kHz nn 0 AMPLITUDE (dBFS) TOP VIEW GND REFIN REFOUT VDD GND AIN+ AIN– GND 1 2 3 4 5 6 7 8 17 GND 16 15 14 13 12 11 10 9 SNR = 82dB THD = –93dB SINAD = 81.7dB SFDR = 97dB –20 SCK+ SCK– SDO+ SDO– –40 –60 –80 –100 –120 OVDD GND CMOS/LVDS CNV –140 0 0.2 0.4 0.6 FREQUENCY (MHz) 0.8 1.0 231014 TA01b MSE PACKAGE 16-LEAD (4mm × 5mm) PLASTIC MSOP LTC2310CMSE-14 LTC2310IMSE-14 LTC2310HMSE-14 3.3V OR 5V DIFFERENTIAL INPUTS NO CONFIGURATION REQUIRED IN+, IN – VDD ARBITRARY 0V VDD VDD 1µF DIFFERENTIAL 25Ω VDD VDD REFOUT LTC2310-14 0V BIPOLAR AIN+ REFIN 47pF UNIPOLAR 25Ω 10µF SDO SCK AIN– CMOS/LVDS 0V 0V 10µF GND LVDS OR CMOS CONFIGURABLE I/O CNV OVDD 1.8V TO 2.5V 1µF 231014 TA01a 5 Data Converters LTC2320-16 Octal, 16-Bit, 1.5Msps/Ch Simultaneous Sampling ADC FEATURES DESCRIPTION 1.5Msps/Ch Throughput Rate nn Eight Simultaneously Sampling Channels nn Guaranteed 16-Bit, No Missing Codes nn 8V P-P Differential Inputs with Wide Input Common Mode Range nn 82dB SNR (Typ) at f IN = 500kHz nn –90dB THD (Typ) at f IN = 500kHz nn Guaranteed Operation to 125°C nn Single 3.3V or 5V Supply nn Low Drift (20ppm/°C Max) 2.048V or 4.096V Internal Reference nn 1.8V to 2.5V I/O Voltages nn CMOS or LVDS SPI-Compatible Serial I/O nn Power Dissipation 20mW/Ch (Typ) nn Small 52-Lead (7mm × 8mm) QFN Package The LTC2320-16 is a low noise, high speed octal 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 LTC2320-16 has an 8VP-P differential input range, making it ideal for applications which require a wide dynamic range with high common mode rejection. The LTC2320-16 achieves ±2LSB INL typical, no missing codes at 16 bits and 82dB SNR. nn The LTC2320-16 has an onboard low drift (20ppm/°C max) 2.048V or 4.096V temperature compensated reference. The LTC2320-16 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 LTC2320-16 ideally suited for a wide variety of high speed applications. The LTC2320-16 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. APPLICATIONS High Speed Data Acquisition Systems nn Communications nn Optical Networking nn Multiphase Motor Control 32k Point FFT fSMPL = 1.5Msps, fIN = 500kHz AMPLITUDE (dBFS) 52 51 50 49 48 47 46 45 44 43 42 41 AIN6– 1 + AIN6 40 SDO8/SDOD– 2 39 SDO7/SDOD+ GND 3 38 GND AIN5– 4 37 OVDD AIN5+ 5 36 SDO6/SDOC– REFOUT3 6 35 SDO5/SDOC+ GND 7 33 SNR = 82.2dB THD = –91.2dB –20 SINAD = 81.8dB SFDR = 94.7dB –40 –60 –80 –100 –120 –140 34 CLKOUTEN/CLKOUT– 53 GND REF 8 IN 0 SCK/SCK+ DNC/SCK– VDD REFOUT4 GND AIN8– AIN8+ GND AIN7– AIN7+ VDD TOP VIEW REFBUFEN nn 0 0.1 0.2 0.3 0.4 0.5 FREQUENCY (MHz) CLKOUT/CLKOUT+ AIN4– 10 10µF 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+ GND AIN1– AIN2+ VDD AIIN2– 15 16 17 18 19 20 21 22 23 24 25 26 TRUE DIFFERENTIAL INPUTS NO CONFIGURATION REQUIRED IN+, IN – VDD ARBITRARY 0V VDD 0V VDD DIFFERENTIAL VDD AIN2+ S/H AIN2– AIN3+ S/H AIN3– AIN4+ S/H AIN4– 0V BIPOLAR AIN1+ S/H AIN1– UNIPOLAR 0V AIN5+ S/H AIN5– AIN6+ S/H AIN6– AIN7+ S/H AIN7– AIN8+ S/H AIN8– REF EIGHT SIMULTANEOUS SAMPLING CHANNELS 6 1µF 1.8V TO 2.5V 3.3V OR 5V UKG PACKAGE UKG PACKAGE 52-LEAD(7mm (7mm ×× 8mm) QFN 52-LEAD 8mm)PLASTIC PLASTIC QFN LTC2320CUKG-16 LTC2320IUKG-16 LTC2320HUKG-16 0.7 232016 TA01b 32 GND REFOUT2 9 0.6 VDD GND MUX 16-BIT SAR ADC MUX 16-BIT SAR ADC GND SDO1 SDO2 SDO3 SDO4 SDO5 SDO6 SDO7 SDO8 CLKOUT SCK LTC2320-16 MUX OVDD CMOS/LVDS SDR/DDR REFBUFEN 16-BIT SAR ADC CNV MUX 16-BIT SAR ADC REFOUT1 REFOUT2 REFOUT3 REFOUT4 232016 TA01a 1µF 10µF 10µF 10µF 10µF SAMPLE CLOCK Data Converters LTC2341-16 Dual, 16-Bit, 666ksps/Ch Differential SoftSpan ADC with Wide Input Common Mode Range FEATURES DESCRIPTION 666ksps per Channel Throughput nn Two Simultaneous Sampling Channels nn ±1.25LSB INL (Maximum) nn Guaranteed 16-Bit, No Missing Codes nn Differential, Wide Common Mode Range Inputs nn Per Channel SoftSpan Input Ranges: nn ±4.096V, 0V to 4.096V, ±2.048V, 0V to 2.048V nn ±5V, 0V to 5V, ±2.5V, 0V to 2.5V nn 93.4dB Single-Conversion SNR (Typical) nn −114dB THD (Typical) at f IN = 2kHz nn 105dB CMRR (Typical) at f IN = 200Hz nn Rail-to-Rail Input Overdrive Tolerance nn Guaranteed Operation to 125°C nn Integrated Reference and Buffer (4.096V) nn SPI CMOS (1.8V to 5V) and LVDS Serial I/O nn Internal Conversion Clock, No Cycle Latency nn 74mW Power Dissipation (Typical) nn 32-Lead (5mm × 5mm) QFN Package The LTC2341-16 is a 16-bit, low noise 2-channel simultaneous sampling successive approximation register (SAR) ADC with differential, wide common mode range inputs. Operating from a 5V supply and using the internal reference and buffer, both channels of this SoftSpan ADC can be independently configured on a conversion-by-conversion basis to accept ±4.096V, 0V to 4.096V, ±2.048V, or 0V to 2.048V signals. One channel may also be disabled to increase throughput on the other channel. nn The wide input common mode range and 105dB CMRR of the LTC2341-16 analog inputs allow the ADC to directly digitize a variety of signals, simplifying signal chain design. This input signal flexibility, combined with ±1.25LSB INL, no missing codes at 16 bits, and 93.4dB SNR, makes the LTC2341-16 an ideal choice for many applications requiring wide dynamic range. The LTC2341-16 supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces. Either one or two lanes of data output may be employed in CMOS mode, allowing the user to optimize bus width and throughput. APPLICATIONS Integral Nonlinearity vs Output Codeand and Channel vs Output Code Channel Programmable Logic Controllers nn Industrial Process Control nn Medical Imaging nn High Speed Data Acquisition nn 1.00 0.75 0.50 INL ERROR (LSB) SDO–/SDI BUSY CS VDDLBYP GND VDD GND GND TOP VIEW 32 31 30 29 28 27 26 25 0.25 0 –0.25 IN1– 1 24 SDO+ –0.50 IN1+ 2 23 SCKO–/SDO1 –0.75 GND 3 22 SCKO+/SCKO GND 4 GND 5 IN0– 7 18 SCKI+/SDO0 17 SDI 8 SDI+ CNV PD LVDS/CMOS REFBUF GND GND 5V 0.1µF – 9 10 11 12 13 14 15 16 UH PACKAGE 32-LEAD (5mm ×× 5mm) PLASTIC QFN LTC2341CUH-16 LTC2341IUH-16 LTC2341HUH-16 0 16384 OUTPUT CODE 32768 234116 TA01b 19 SCKI–/SCKI REFIN –16384 20 GND GND 6 IN0+ –1.00 –32768 21 OVDD 33 GND ±4.096V RANGE FULLY DIFFERENTIAL DRIVE (IN– = –IN+) ALL CHANNELS 5V ARBITRARY CMOS OR LVDS I/O INTERFACE FULLY DIFFERENTIAL 5V VDD IN0+ S/H IN0– 0V 5V 1.8V TO 5V 0.1µF 2.2µF VDDLBYP OVDD LVDS/CMOS PD LTC2341-16 0V BIPOLAR 5V 16-BIT SAR ADC MUX UNIPOLAR IN1+ S/H IN1– 0V 0V DIFFERENTIAL INPUTS IN+/IN– WITH WIDE INPUT COMMON MODE RANGE Protected by U.S. Patents, including 7705765, 7961132, 8319673, 9197235. REFBUF TWO SIMULTANEOUS SAMPLING CHANNELS 47µF REFIN GND 0.1µF SDO0 SDO1 SCKO SCKI SDI CS BUSY CNV SAMPLE CLOCK 234116 TA01a 7 Data Converters LTC2341-18 Dual, 18-Bit, 666ksps/Ch Differential SoftSpan ADC with Wide Input Common Mode Range FEATURES DESCRIPTION 666ksps per Channel Throughput nn Two Simultaneous Sampling Channels nn ±4LSB INL (Maximum) nn Guaranteed 18-Bit, No Missing Codes nn Differential, Wide Common Mode Range Inputs nn Per Channel SoftSpan Input Ranges: nn ±4.096V, 0V to 4.096V, ±2.048V, 0V to 2.048V nn ±5V, 0V to 5V, ±2.5V, 0V to 2.5V nn 95dB Single-Conversion SNR (Typical) nn −114dB THD (Typical) at f IN = 2kHz nn 105dB CMRR (Typical) at f IN = 200Hz nn Rail-to-Rail Input Overdrive Tolerance nn Guaranteed Operation to 125°C nn Integrated Reference and Buffer (4.096V) nn SPI CMOS (1.8V to 5V) and LVDS Serial I/O nn Internal Conversion Clock, No Cycle Latency nn 74mW Power Dissipation (Typical) nn 32-Lead (5mm × 5mm) QFN Package The LTC2341-18 is an 18-bit, low noise 2-channel simultaneous sampling successive approximation register (SAR) ADC with differential, wide common mode range inputs. Operating from a 5V supply and using the internal reference and buffer, both channels of this SoftSpan ADC can be independently configured on a conversion-by-conversion basis to accept ±4.096V, 0V to 4.096V, ±2.048V, or 0V to 2.048V signals. One channel may also be disabled to increase throughput on the other channel. nn The wide input common mode range and 105dB CMRR of the LTC2341-18 analog inputs allow the ADC to directly digitize a variety of signals, simplifying signal chain design. This input signal flexibility, combined with ±4LSB INL, no missing codes at 18 bits, and 95dB SNR, makes the LTC2341-18 an ideal choice for many applications requiring wide dynamic range. The LTC2341-18 supports pin-selectable SPI CMOS (1.8V to 5V) and LVDS serial interfaces. Either one or two 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 Programmable Logic Controllers nn Industrial Process Control nn Medical Imaging nn High Speed Data Acquisition nn 2.0 1.5 1.0 INL ERROR (LSB) SDO–/SDI BUSY CS VDDLBYP GND VDD GND GND TOP VIEW 32 31 30 29 28 27 26 25 24 SDO+ IN1+ 2 23 SCKO–/SDO1 GND 3 22 SCKO+/SCKO GND 4 21 OVDD 33 GND IN0– 7 18 SCKI+/SDO0 IN0+ 8 17 SDI– SDI+ CNV LVDS/CMOS PD REFBUF GND 9 10 11 12 13 14 15 16 GND –0.5 –1.5 –2.0 –131072 –65536 0 65536 OUTPUT CODE 131072 234118 TA01b 19 SCKI–/SCKI REFIN 0 20 GND GND 6 UH PACKAGE 32-LEAD 32-LEAD (5mm (5mm ×× 5mm) PLASTIC QFN LTC2341CUH-18 LTC2341IUH-18 LTC2341HUH-18 5V ARBITRARY 5V 0.1µF 0V 5V 1.8V TO 5V 0.1µF 2.2µF CMOS OR LVDS I/O INTERFACE FULLY DIFFERENTIAL 5V VDD IN0+ S/H IN0– VDDLBYP OVDD LVDS/CMOS PD LTC2341-18 0V BIPOLAR 5V 18-BIT SAR ADC MUX UNIPOLAR IN1+ S/H IN1– 0V 0V DIFFERENTIAL INPUTS IN+/IN– WITH WIDE INPUT COMMON MODE RANGE 8 0.5 –1.0 IN1– 1 GND 5 ±4.096V RANGE FULLY DIFFERENTIAL DRIVE (IN– = –IN+) ALL CHANNELS REFBUF TWO SIMULTANEOUS SAMPLING CHANNELS 47µF REFIN GND 0.1µF SDO0 SDO1 SCKO SCKI SDI CS BUSY CNV SAMPLE CLOCK 234118 TA01a Protected by U.S. Patents, including 7705765, 7961132, 8319673, 9197235. Data Converters LTC2358-16 Buffered Octal, 16-Bit, 200ksps/Ch Differential ±10.24V ADC with 30VP-P Common Mode Range FEATURES DESCRIPTION 200ksps per Channel Throughput nn Eight Buffered Simultaneous Sampling Channels nn 400pA/4nA Max Input Leakage at 85°C/125°C nn ±1LSB INL (Maximum, ±10.24V Range) nn Guaranteed 16-Bit, No Missing Codes nn Differential, Wide Common Mode Range Inputs nn Per Channel SoftSpan Input Ranges: nn ±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V nn ±12.5V, 0V to 12.5V, ±6.25V, 0V to 6.25V nn 94.2dB Single-Conversion SNR (Typical) nn −111dB THD (Typical) at f IN = 2kHz nn 128dB CMRR (Typical) at f IN = 200Hz nn Rail-to-Rail Input Overdrive Tolerance nn Integrated Reference and Buffer (4.096V) nn SPI CMOS (1.8V to 5V) and LVDS Serial I/O nn Internal Conversion Clock, No Cycle Latency nn 219mW Power Dissipation (27mW/Ch Typical) nn 48-Lead (7mm x 7mm) LQFP Package The LTC2358-16 is a 16-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. nn The integrated picoamp-input analog buffers, wide input common mode range and 128dB CMRR of the LTC2358-16 allow the ADC to directly digitize a variety of signals using minimal board space and power. This input signal flexibility, combined with ±1LSB INL, no missing codes at 16 bits, and 94.2dB SNR, makes the LTC2358-16 an ideal choice for many high voltage applications requiring wide dynamic range. The LTC2358-16 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 Programmable Logic Controllers nn Industrial Process Control nn Power Line Monitoring nn Test and Measurement nn Integral Nonlinearity vs Output Code and Channel 1.00 TOP VIEW INL ERROR (LSB) IN7+ IN7– GND VEE GND VDD VDD GND VDDLBYP CS BUSY SDI 0.50 48 47 46 45 44 43 42 41 40 39 38 37 IN6– 1 IN6+ 2 IN5– 3 IN5+ 4 IN4– 5 IN4+ 6 IN3– 7 IN3+ 8 IN2– 9 IN2+ 10 IN1– 11 IN1+ 12 0V –10V TRUE BIPOLAR +10V –0.75 –1.00 –32768 15V 0.1µF 0 16384 OUTPUT CODE 32768 5V 0.1µF 1.8V TO 5V 0.1µF 2.2µF CMOS OR LVDS I/O INTERFACE FULLY DIFFERENTIAL +5V 0V BUFFERS IN0+ S/H – IN0 S/H +10V 0V –10V –10V VCC VDD VDDLBYP OVDD LVDS/CMOS PD LTC2358-16 SDO0 S/H –5V 0V UNIPOLAR DIFFERENTIAL INPUTS IN+/IN– WITH WIDE INPUT COMMON MODE RANGE S/H S/H MUX 16-BIT SAR ADC SDO7 SCKO SCKI SDI CS BUSY CNV S/H IN7+ IN7– S/H S/H VEE REFBUF REFIN GND SAMPLE CLOCK 235816 TA01a EIGHT BUFFERED SIMULTANEOUS SAMPLING CHANNELS Protected by U.S. Patents, including 7705765, 7961132, 8319673, 9197235. –16384 235816 TA01b • • • LTC2358CLX-16 LTC2358ILX-16 LTC2358HLX-16 ARBITRARY 0 –0.25 –0.50 SDO7 SDO–/SDO6 SDO+/SDO5 SCKO–/SDO4 SCKO+/SCKO OVDD GND SCKI–/SCKI SCKI+/SDO3 SDI–/SDO2 SDI+/SDO1 SDO0 +10V 0.25 • • • 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 35 34 33 32 31 30 29 28 27 26 25 LX PACKAGE PACKAGE LX 48-LEAD(7mm (7mm ×× 7mm) 7mm) PLASTIC 48-LEAD PLASTICLQFP LQFP ±10.24V RANGE TRUE BIPOLAR DRIVE (IN– = 0V) ALL CHANNELS 0.75 0.1µF 47µF 0.1µF –15V 9 Data Converters LTC2374-16 16-Bit, 1.6Msps, 8-Channel SAR ADC with 96dB SNR FEATURES DESCRIPTION 1.6Msps Throughput Rate nn 16-Bit Resolution with No Missing Codes nn 8-Channel Multiplexer with Selectable Input Range nn Fully Differential (±4.096V) nn Pseudo-Differential Unipolar (0V to 4.096V) nn Pseudo-Differential Bipolar (±2.048V) nn INL: ±1LSB (Maximum) nn SNR: 96dB (Fully Differential)/93dB (Pseudo-Differential) (Typical) at fIN = 1kHz nn THD: –114dB (Typical) at f IN = 1kHz nn Programmable Sequencer nn Selectable Digital Gain Compression nn Single 5V Supply with 1.8V to 5V I/O Voltages nn SPI-Compatible Serial I/O nn Onboard 2.048V Reference and Reference Buffer nn No Pipeline Delay, No Cycle Latency nn Power Dissipation 55mW (Typical) nn 32-Lead 5mm × 5mm QFN Package The LTC2374-16 is a low noise, high speed, 8-channel 16-bit successive approximation register (SAR) ADC. Operating from a single 5V supply, the LTC2374-16 has a highly configurable, low crosstalk 8-channel input multiplexer, supporting fully differential, pseudo-differential unipolar and pseudo-differential bipolar analog input ranges. The LTC2374-16 achieves ±1LSB INL (maximum) in all input ranges, no missing codes at 16-bits and 96dB (fully differential)/ 93dB (pseudo-differential) SNR (typical). nn The LTC2374-16 has an onboard low drift (20ppm/°C max) 2.048V temperature-compensated reference and a single-shot capable reference buffer. The LTC2374-16 also has a high speed SPI-compatible serial interface that supports 1.8V, 2.5V, 3.3V and 5V logic through which a sequencer with a depth of 16 may be programmed. An internal oscillator sets the conversion time, easing external timing considerations. The LTC2374-16 dissipates only 55mW and automatically naps between conversions, leading to reduced power dissipation that scales with the sampling rate. A sleep mode is also provided to reduce the power consumption of the LTC2374-16 to 300μW for further power savings during inactive periods. APPLICATIONS Programmable Logic Controllers Industrial Process Control nn High Speed Data Acquisition nn Portable or Compact Instrumentation nn Automatic Test Equipment nn nn Integral Nonlinearity vs Output Code 1.0 FULLY DIFFERENTIAL BIPOLAR UNIPOLAR 0.8 INL ERROR (LSB) OVDD GND 0.6 GND VDDLBYP VDD COM CH0 CH1 TOP VIEW 32 31 30 29 28 27 26 25 0.4 0.2 0.0 –0.2 CH2 1 24 RESET CH3 2 23 GND MUXOUT+ 3 22 SDO –0.6 21 SCK –0.8 ADCIN+ 4 33 ADCIN– 5 –1.0 19 BUSY 6 CH4 7 CH5 8 16384 32768 49152 OUTPUT CODE 65536 237416 TA01b 17 GND +4.096V 5V 1.8V TO 5V UNIPOLAR 10µF 2.2µF 0.1µF 0V + 10Ω 1200pF +2.048V – 0V +4.096V +2.048V 0V BIPOLAR 10Ω 1200pF CH0 CH1 CH2 CH3 MUX CH4 CH5 CH6 CH7 COM VDDLBYP OVDD VDD LTC2374-16 + 16-BIT SAMPLING ADC – ADCIN– FULLY DIFFERENTIAL +4.096V ADCIN+ UH PACKAGE UH PACKAGE 32-LEAD(5mm (5mm ××5mm) PLASTIC QFN QFN 32-LEAD 5mm) PLASTIC LTC2374CUH-16 LTC2374IUH-16 IN+/IN– CNV GND GND REFIN REFBUF GND CH7 CH6 9 10 11 12 13 14 15 16 10 0 18 RDL MUXOUT+ MUXOUT 20 SDI MUXOUT– – –0.4 REFBUF 47µF REFIN 0.1µF GND RESET RDL SDO SCK SDI BUSY CNV SAMPLE CLOCK 237416 TA01a Protected by U.S. Patents, including 7705765, 7961132, 8319673. Data Converters LTC2512-24 24-Bit Oversampling ADC with Configurable Flat Passband Digital Filter FEATURES DESCRIPTION ±1ppm INL (Typ) nn 117dB Dynamic Range (Typ) at 50ksps nn 108dB Dynamic Range (Typ) at 400ksps nn Guaranteed 24-Bit No Missing Codes nn Configurable Digital Filter with Synchronization nn Relaxed Anti-Aliasing Filter Requirements nn Dual Output 24-Bit SAR ADC nn 24-Bit Digitally Filtered Low Noise Output nn 14-Bit Differential + 8-Bit Common Mode No Latency Output nn Wide Input Common Mode Range nn Guaranteed Operation to 85°C nn 1.8V to 5V SPI-Compatible Serial I/O nn Low Power: 30mW at 1.6Msps nn 24-Lead 7mm × 4mm DFN Package The LTC2512-24 is a low noise, low power, high performance 24‑bit ADC with an integrated configurable digital filter. Operating from a single 2.5V supply, the LTC2512-24 features a fully differential input range up to ±VREF, with VREF ranging from 2.5V to 5.1V. The LTC2512-24 supports a wide common mode range from 0V to VREF simplifying analog signal conditioning requirements. nn The LTC2512-24 simultaneously provides two output codes: (1) a 24-bit digitally filtered high precision low noise code, and (2) a 22‑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 24-bit filtered output code. The 22-bit composite code consists of a 14-bit code representing the differential voltage and an 8-bit code representing the common mode voltage. The 22-bit composite code is available each conversion cycle, with no cycle of latency. The digital filter can be easily configured for 4 different downsampling factors by pin strapping. The configurations provide a dynamic range of 108dB at 400ksps and 117dB at 50ksps. The digital lowpass filter relaxes the requirements for analog antialiasing. Multiple LTC2512-24 devices can be easily synchronized using the SYNC pin. APPLICATIONS Seismology Energy Exploration nn Automated Test Equipment (ATE) nn High Accuracy Instrumentation nn nn TOP VIEW 3 24 GND 23 GND 22 OVDD 21 BUSY 20 SDOB 19 SCKB 18 SCKA 17 SDOA 16 GND 15 DRL 14 SYNC 13 MCLK 25 GND 2 INL ERROR (ppm) RDLA 1 RDLB 2 VDD 3 GND 4 IN+ 5 IN– 6 GND 7 REF 8 REF 9 REF 10 SEL0 11 SEL1 12 Integral Nonlinearity vs Input Voltage 1 0 –1 –2 –3 DKD DKD PACKAGE PACKAGE 24-LEAD 24-LEAD (7mm (7mm ×× 4mm) 4mm) PLASTIC PLASTIC DFN DFN LTC2512CDKD-24 LTC2512IDKD-24 –5 –2.5 0 2.5 INPUT VOTLAGE (V) 5 251224f TA01a 1.8V TO 5V 2.5V 10µF 0.1µF IN+, IN– VREF ARBITRARY 0V VREF DIFFERENTIAL VREF VDD IN+ VREF UNIPOLAR IN – 0V 0V DIFFERENTIAL INPUTS IN+/IN– WITH WIDE INPUT COMMON MODE RANGE 14-BIT GND REF 2.5V TO 5.1V OVDD PIN-SELECTABLE LOW-PASS FLAT PASSBAND DIGITAL FILTER 24-BIT 24-BIT SAR ADC CORE 0V BIPOLAR LTC2512-24 MCLK BUSY DRL SDOA SCKA RDLA RDLB SDOB SCKB SAMPLE CLOCK 251224 TA01 47µF (X7R, 1210 SIZE) Patents, including 7705765, 7961132, 8319673, 8576104, 8810443, 9054727, 9231611, 9331709 and Patents pending. 11 High Frequency LTC5566 300MHz to 6GHz Dual Programmable Gain Downconverting Mixer FEATURES DESCRIPTION 12dB Power Conversion Gain nn 35dBm Output IP3 nn 15.5dB Range IF DVGA in 0.5dB Steps nn Programmable RF Input Tuning nn Reduced Power Mode nn 3.3V Single Supply nn Simple SPI for Fast Development nn –40°C to 105°C Operation (T ) C nn Very Small Solution Size nn 32-Lead (5mm × 5mm) QFN Package The LTC5566 dual programmable gain downconverting mixer is ideal for diversity and MIMO receivers that require precise gain setting. Each channel incorporates an active mixer and a digital IF VGA with 15.5dB gain control range. The IF gain of each channel is programmed in 0.5dB steps through the SPI. nn Programmable RF input tuning via the SPI or parallel control lines makes the device attractive for wideband radio applications. Furthermore, a reduced power mode is available, programmed through the SPI. Integrated RF transformers provide single-ended 50Ω inputs. The differential LO input is designed for single-ended or differential drive. The differential IF output simplifies the interface to differential IF filters and amplifiers. The mixers are optimized for use up to 5GHz but may be used up to 6GHz with degraded performance. APPLICATIONS 4G and 5G MIMO Receivers nn Diversity Receivers nn Distributed Antenna Systems (DAS) nn Network Test/Monitoring Equipment nn Software-Defined Radios nn LTC5566 Conversion Gain vs RF Frequency and IF Attenuation (0.5dB Gain Steps) 14 12 GND AI1– AI1+ EN1 VCC1 MO1+ MO1– T1 TOP VIEW 10 32 31 30 29 28 27 26 25 8 6 GND 1 24 IF1 RF1 2 23 IF1– CSB 3 22 VDD CLK 4 LO+ SDI 5 SDO 6 19 PS RF2 7 18 IF2– GND 8 17 IF2+ 21 33 GND GC (dB) + –2 –4 BAND 0 RF TUNE IF = 153MHz –8 2.5 3.5 4.5 1.5 2 3 4 RF INPUT FREQUENCY (GHz) –6 GND AI2– AI2+ EN2 VCC2 MO2+ T0 9 10 11 12 13 14 15 16 MO2– 2 0 20 LO– UH PACKAGE PACKAGE UH 32-LEAD(5mm (5mm × QFN 32-LEAD × 5mm) 5mm)PLASTIC PLASTIC QFN 4 5566 TA01b Dual Channel MIMO Receiver with Programmable 0.5dB Gain Steps LTC5566IUH LPF 3.3V 3.3V LTC5566 BPF RF1 LNA BPF IF1+ LTC6430 IF1 IF 1– LO+ LO CSB CLK SDI SDO LO LO– SPI LO BPF IF2– BPF LNA LTC6430 IF2 RF2 IF 2+ 5566 TA01a 3.3V 3.3V 12 5 Interface LTM2885 6500VRMS Isolated RS485/RS422 µModule Transceiver + Power FEATURES DESCRIPTION RS485/RS422 Transceiver: 6500VRMS for 1 Minute nn Reinforced Insulation nn Isolated DC Power: 5V at 150mA nn No External Components Required nn 20Mbps or Low EMI 250kbps Data Rate nn High ESD: ±15kV HBM on Transceiver Interface nn High Common Mode Transient Immunity: 50kV/μs nn Integrated Selectable 120Ω Termination nn Extended Creepage and Clearance ~14.6mm nn 1.62V to 5.5V Logic Supply Pin for Flexible Digital Interface nn Maximum Continuous Working Voltage: 690V RMS nn High Input Impedance Failsafe RS485 Receiver nn Current Limited Drivers and Thermal Shutdown nn Compatible with TIA/EIA-485-A and PROFIBUS nn High Impedance Output During Internal Fault Condition nn Low Current Shutdown Mode (< 10µA) nn General Purpose CMOS Isolated Channel nn 22mm × 9mm × 5.16mm Surface Mount BGA Package The LTM2885 is a complete galvanically isolated full-duplex RS485/RS422 µModule (micromodule) transceiver. No external components are required. A single supply powers both sides of the interface through an integrated, isolated, low noise, efficient 5V output DC/DC converter. nn Coupled inductors and an isolation power transformer provide 6500VRMS of isolation between the line transceiver and the logic interface. This device is ideal for systems where the ground loop is broken allowing for large common mode voltage variation. Uninterrupted communication is guaranteed for common mode transients up to 50kV/μs. Maximum data rates are 20Mbps or 250kbps in slew limited mode. Transmit data, DI, and receive data, RO, are implemented with event driven low jitter processing. The receiver has a one-eighth unit load supporting up to 256 nodes per bus. A logic supply pin allows easy interfacing with different logic levels from 1.62V to 5.5V, independent of the main supply. Enhanced ESD protection allows this part to withstand up to ±15kV (human body model) on the transceiver interface pins to isolated supplies and ±25kV through the isolation barrier to logic supplies without latch-up or damage. APPLICATIONS Isolated RS485/RS422 Interface Industrial Networks nn Breaking RS485 Ground Loops nn Isolated PROFIBUS-DP Networks nn nn LTM2885 Operating Through 100kV/μs CM Transients TOP VIEW 6 5 4 3 2 1 5V/DIV ON VL VCC RO A RE B DE Z DI GND TE DOUT NC A B C D E F G H J K L BGA PACKAGE 42-PIN (22mm × 9mm × 5.2mm) LTM2885CY LTM2885IY LTM2885HY M N P DI RO 5V/DIV VCC2 MULTIPLE SWEEPS OF COMMON MODE TRANSIENTS 300V/DIV GND2 Y NC DIN R S SLO T 20ns/DIV 2885 TA01b Isolated Half-Duplex RS485 μModule Transceiver 5V VCC VL RO PWR ISOLATION BARRIER 7 RE TE DE DI LTM2885 VCC2 A 5V OUT B TWISTED-PAIR CABLE Y Z GND GND2 2885 TA01a 13 Interface LTM2887 SPI/Digital or I2C µModule Isolator with Dual Adjustable 5V Regulators FEATURES DESCRIPTION 6-Channel Logic Isolator: 2500VRMS for 1 Minute nn UL-CSA Recognition Pending nn Isolated DC Power: nn 1.8V to 5V Logic Supply at Up to 100mA nn 0.6V to 5V Auxiliary Supply at Up to 100mA nn No External Components Required nn SPI/Digital (LTM2887-S) or I2C (LTM2887-I) Options nn High Common Mode Transient Immunity: 30kV/μs nn High Speed Operation: nn 10MHz Digital Isolation nn 4MHz/8MHz SPI Isolation nn 400kHz I2C Isolation nn 3.3V (LTM2887-3) or 5V (LTM2887-5) Operation nn 1.62V to 5.5V Logic Supply nn ±10kV ESD HBM Across the Isolation Barrier nn Maximum Continuous Working Voltage: 560V PEAK nn Low Current Shutdown Mode (<10µA) nn Low Profile 15mm × 11.25mm × 3.42mm BGA Package The LTM2887 is a complete galvanic digital µModule (micromodule) isolator. No external components are required. A single 3.3V or 5V supply powers both sides of the interface through an integrated, isolated DC/DC converter. A logic supply pin allows easy interfacing with different logic levels from 1.62V to 5.5V, independent of the main supply. nn Available options are compliant with SPI and I2C (master mode only) specifications. The isolated side includes two 5V nominal power supplies, including programmable current limit, each capable of providing more than 100mA of load current. The supplies may be adjusted from their nominal value using a single external resistor. Coupled inductors and an isolation power transformer provide 2500VRMS of isolation between the input and output logic interface. This device is ideal for systems where the ground loop is broken, allowing for a large common mode voltage range. Communication is uninterrupted for common mode transients greater than 30kV/μs. APPLICATIONS LTM2887 Operating Through 50kV/µs CM Transients Isolated SPI or I2C Interfaces Industrial Systems nn Test and Measurement Equipment nn Breaking Ground Loops nn nn 5V/DIV TOP VIEW 1 2 3 4 DO2 DNC SCL SDA TOP VIEW 5 6 7 8 DI1 GND ON VL A 1 2 3 4 SDO DO2 SCK SDI DO1 GND 5 6 7 REPETITIVE COMMON MODE TRANSIENTS GND2 TO GND 8 CS SDOE ON VL A B B DO1 VCC GND C D D E E F F G G H J VCC 200V/DIV Isolated 4MHz SPI Interface H I1 GND2 AVL2 IVL2 AVCC2 J LTM2887-5S I1 GND2 AVL2 IVL2 AVCC2 5V K VL L L ON DNC SCL2 SDA2 O1 VL2 IVCC2 VCC2 SDO2 I2 SCK2 SDI2 CS2 VCC2 VCC K I2 2887 TA01b 20ns/DIV AVCC2 IVCC2 BGA PACKAGE PACKAGE BGA 32-PIN (15mm ×× 11.25mm 11.25mm × 3.42mm) 32-PIN (15mm × 3.42mm) BGA PACKAGE PACKAGE BGA 32-PIN (15mm ×× 11.25mm 11.25mm × 3.42mm) 32-PIN (15mm × 3.42mm) LTM2887CY-3I LTM2887IY-3I LTM2887HY-3I LTM2887CY-5I LTM2887IY-5I LTM2887HY-5I LTM2887CY-3S LTM2887IY-3S LTM2887HY-3S LTM2887CY-5S LTM2887IY-5S LTM2887HY-5S SDOE CS SDI SCK SDO CS SDI SCK 5V AT 100mA 1.15k VL2 3.3V AT 100mA AVL2 VL2 IVCC2 VCC2 ISOLATION BARRIER C SCK SD0 SCK2 = SD02 27.4k IVL2 1.15k CS2 SDI2 SCK2 DO2 I2 SDO SDO2 DO1 I1 GND GND2 6.04k CS SDI SCK SDO 2887 TA01a 14 Isolated CAN + Power Rugged 4Mbps µModule CAN Transceiver Features 2500V RMS 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 The LTM®2889 is a robust isolated CAN transceiver that breaks ground loops by isolating the logic level interface and line transceiver. An onboard DC/DC converter powers the transceiver and provides 0.75W for powering additional system circuitry. The ISO 11898-2 compliant CAN transceiver supports an extended common mode range of ±36V, is ±60V fault protected and ±25kV ESD protected, and provides uninterrupted communication during common mode transients over 30kV/µs. This ensures high system reliability under the harshest operating conditions. Features • • • • • Isolated 4Mbps CAN Transceiver 2500VRMS for 1 Minute per UL1577 Up to 150mA Isolated Power Output ±60V Fault Protection High Common Mode Transient Immunity: 30kV/µs • ±25kV ESD Transceiver Interface • 15mm x 11.25mm BGA Package 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. Power over Ethernet Controller LTC4279 Single Port PoE/PoE+/LTPoE++ PSE Controller FEATURES DESCRIPTION Compliant with IEEE 802.3at Type 1 and 2 nn Supports LTPoE++ Up to 90W nn Supports Dual-Signature PDs nn Fully Autonomous Operation without Microcontroller nn Very Low Power Dissipation nn 0.1Ω Sense Resistance nn Low R DS(ON) External MOSFET nn Very High Reliability 4-Point PD Detection nn 2-Point Forced Voltage and Forced Current nn Robust Short-Circuit Protection nn Cable Surge Protected ±80V OUT Pin nn Classification Dependent I CUT and ILIM Current Thresholds nn Supports 2-Pair and 4-Pair Output Power nn UltraPWR Mode Supports Custom PDs Up to 123W nn Pin-Selectable Detection Backoff Timer for Midspans nn Pin Programmable Legacy PD Detection nn Pin Programmable Maximum Power Mode nn Status LED Pin nn Available in 20-Lead QFN and 16-Lead SO Packages The LTC4279 is an autonomous single port power sourcing equipment (PSE) controller designed for use in IEEE 802.3at Type 1, Type 2 and LTPoE++ compliant Power over Ethernet (PoE) systems. The LTC4279 provides fully autonomous IEEE 802.3 and LTPoE++ compliant operation without a microcontroller. The LTC4279 simplifies PSE implementation, requiring only a single supply and a small number of passive support components. nn The LTC4279 delivers lowest-in-industry heat dissipation by utilizing a low RDS(ON) external MOSFET and a 0.1Ω sense resistor, eliminating the need for expensive heat sinks and increasing efficiency. PD discovery uses a proprietary dual-mode 4-point detection mechanism ensuring excellent immunity from false PD detection. Midspan PSEs are supported with physical layer classification and a 2.5 second backoff timer. Legacy and custom PDs are supported with pin-selectable LEGACY and UltraPWR modes. LEGACY mode detects and powers pre-IEEE specification PDs. UltraPWR mode aggressively turns on and powers custom PDs requiring high inrush and/or operational currents. APPLICATIONS PoE PSE Endpoints (Switch/Router) nn PoE Midspan Power Injectors nn Power Forwarders nn Femto Cells nn Security Systems nn DNC RESET MID DNC TOP VIEW 20 19 18 17 TOP VIEW DNC 1 16 DUALPD 15 LEGACY MID 1 16 RESET DNC 2 DNC 2 15 DNC DNC 3 DNC 3 14 DUALPD VEE 4 VSSK 4 13 LEGACY VSSK 5 12 DNC SENSE 6 11 DNC 7 8 OUT 7 10 VEE AGND 8 9 SSPACKAGE PACKAGE 16-LEAD 16-LEADPLASTIC PLASTICSO SO LTC4279IS LED 9 10 3.32k LTPoE++ 38.7W 4.64k LTPoE++ 52.7W 5.90k LTPoE++ 70W 7.87k LTPoE++ 90W 10.0k UltraPWR – (Up to 123W*) 13.0k *Depending on VPSE UFD PACKAGE 20-LEAD (4mm × 5mm) PLASTIC QFN LTC4279IUFD 10Ω TVSBULK CBULK LED RESET RPM MID LEGACY DUALPD 0.22µF 100V S1B X7R AGND LTC4279 OUT GATE PWRMODE 1µF 100V X7R SMAJ58A VEE 16 2.37k Type 2 (25.5W) 13 PWRMODE LED 11 DNC AGND GATE 6 OUT 12 PWRMODE RPM (±1%) Type 1 (13W) 14 DNC 21 VEE GATE SENSE 5 MAXIMUM PD INPUT POWER RGATE SENSE 0.1Ω VEE VSSK 4279 TA01 + PORT – μModule Regulators LTM4636 40A DC/DC µModule Regulator FEATURES DESCRIPTION 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 Over Line, Load and Temperature (–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 Internal or External Compensation nn 88% Efficiency (12V IN, 1VOUT) at 40A nn Overcurrent Foldback Protection nn 16mm × 16mm × 7.07mm BGA Package The LTM4636 is a 40A step-down µModule (power module) switching regulator with a stacked inductor as a heat sink for quicker heat dissipation and cooler operation in a small package. The exposed inductor permits direct contact with airflow from any direction. The LTM4636 can deliver 40W (12VIN, 1VOUT, 40A, 200LFM) with only 40°C rise over the ambient temperature. Fullpower 40W is delivered, up to 83°C ambient and half-power 20W is supported at 110°C ambient. nn The LTM4636 operates at 92%, 90% and 88% efficiency, delivering 15A, 30A and 40A, respectively, to a 1V load (12VIN). The µModule regulator is scalable such that four µModules in current sharing mode deliver 160W with only 40°C rise and 88% efficiency (12VIN, 1VOUT, 400LFM). The LTM4636 is offered in a 16mm × 16mm × 7.07mm BGA package. APPLICATIONS nn 12VIN , 1VOUT Efficiency vs Output Current Telecom Servers and Networking Equipment Industrial Equipment and Medical Systems 100 TOP VIEW VOUTS1– VOUTS1+ COMPB 1 2 3 4 5 6 A TRACK/SS RUNC PGOOD SNSP1 SNSP2 MODE/PLLIN 9 10 11 C VFB COMPA GND FREQ GND G TEST3 L TEMP– TEMP+ GMON NC PWM TMON TEST1 GND VIN 90 85 80 75 GND J K PHASMD RUNP PVCC INTVCC F H 95 12 TEST4 (FLOAT PIN) D E SGND CLKOUT 8 VOUT B TEST2 HIZREG 7 EFFICIENCY (%) nn 70 0 5 SW 10 15 20 25 30 OUTPUT CURRENT (A) 35 40 4636 TA01b M 1V, 40A DC/DC µModule Regulator BGAPACKAGE PACKAGE BGA 144-LEAD (16mm × 16mm × 7.07mm) 144-LEAD (16mm × 16mm × 7.07mm) LTM4636EY LTM4636IY VIN ≤ 5.5V, TIE VIN, INTVCC AND PVCC TOGETHER, TIE RUNP TO GND. VIN > 5.5V, THEN OPERATE AS SHOWN 4.70V TO 15V + PVCC PVCC 100µF 25V 22µF 16V ×5 INTVCC 15k 0.1µF INTVCC 34.8k 22µF VIN INTVCC PVCC RUNC LTM4636 RUNP HIZREG FREQ TRACK/SS MODE/PLLIN 1V VOUT VOUTS1+ + VOUTS1– VOUT 1V, 40A 470µF 6.3V ×3 100µF 6.3V ×4 SNSP1 SNSP2 PINS NOT USED IN THIS CIRCUIT: CLKOUT, GMON, PGOOD, PHMODE, PWM, SW, TEST1, TEST2, TEST3, TEST4, TMON OPTIONAL TEMP MONITOR Protected by U.S. Patents, including 5481178, 5847554, 6580258, 6304066, 6476589, 6774611, 6677210, 8163643. COMPA COMPB TEMP+ TEMP– VFB SGND PGND 7.5k 4636 TA01a 17 μModule Regulators LTM4647 30A DC/DC Step-Down µModule Regulator FEATURES DESCRIPTION 4.7V to 15V Input Voltage Range nn 0.6V to 1.8V Output Voltage Range nn 30A DC Output Current nn ±1.2% Total DC Output Voltage Error (–40°C to 125°C) nn High Reliability N + 1 Phase Redundancy Supported nn Internal or External Control Loop Compensation nn Differential Remote Sense Amplifier for Precision Regulation nn Current Mode Control/Fast Transient Response nn Multiphase Current Sharing Up to 180A nn Built-In Temperature Monitoring nn Selectable Pulse-Skipping, Burst Mode® Operation nn Soft-Start/Voltage Tracking nn Frequency Synchronization nn Output Overvoltage Protection nn Output Overcurrent Foldback Protection nn 9mm × 15mm × 5.01mm BGA Package nn APPLICATIONS The LTM4647 is a complete 30A output switching mode stepdown DC/DC µModule (power module) regulator. Included in the package are the switching controller, power FETs, inductor and all supporting components. Operating over an input voltage range of 4.7V to 15V, the LTM4647 supports an output voltage range of 0.6V to 1.8V, set by a single external resistor. Only a few input and output capacitors are needed. Its high efficiency design delivers 87% efficiency from 12V input to 1.0V output with 30A continuous load current. High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The device supports frequency synchronization, programmable multiphase operation, N + 1 phase redundancy, and output voltage tracking for supply rail sequencing. Fault protection features include overvoltage and overcurrent protection. The power module is offered in a space saving 9mm × 15mm × 5.01mm BGA package. The LTM4647 is available with SnPb (BGA) or RoHS compliant terminal finish. Telecom, Networking and Industrial Equipment nn Point-of-Load Regulation nn 1VOUT Efficiency vs Load Current 100 A DRVCC TEST2 B VIN TEMP– E TRACK/SS SW TEMP+ F VOSNS– G H J K GND 90 CLKOUT PWM C D 95 HIZB GND GND VOUT EFFICIENCY (%) 2 1 TOP VIEW 3 4 5 6 7 GND GND RUN GND TEST1 MODE/PLLIN INTVCC PHASMD SVIN FREQ VFB SGND 85 80 75 70 TEST3 VOSNS+ PGOOD COMPa COMPb 65 5V INPUT* 12V INPUT 5 0 10 15 GND 2.2Ω VIN 6V TO 15V VIN 22µF 25V ×2 SVIN 4647 TA01b DRVCC INTVCC HIZB FREQ 43.2k LTM4647 VOUT COMPa VOSNS+ COMPb VFB TRACK/SS 0.1µF VOSNS– SGND GND 4647 TA01a PINS NOT USED IN THIS CIRCUIT: CLKOUT, MODE/PLLIN, PGOOD, PHASMD, PWM, RUN, SW, TEMP+, TEMP– 18 30 4.7µF 6.3V 1µF LTM4647EY LTM4647IY LTM4647IY 25 12VIN, 1VOUT, 30A DC/DC µModule Regulator L BGA PACKAGE PACKAGE BGA 77-LEAD (9mm (9mm ×× 15mm 15mm × × 5.01mm) 77-LEAD 5.01mm) 20 LOAD CURRENT (A) *5V INPUT SEE FIGURE 24 47pF 90.9k VOUT 1V 30A 100µF 6.3V ×6 18V/5A Monolithic Buck-Boost 2.5V to 18V VOUT VIN 0.8V to 18V LTC3119 GND Active Area < 300mm 2 Internal FETs & Sense Resistor Simplify Design Our LTC3119 brings a new level of performance and integration to our growing family of monolithic Buck-Boost converters. Its internal switches can deliver up to 5A of output current while having fast transient response due to its current mode control and a compact solution footprint. Its 2.5V to 18V input range is ideal for single to multicell battery configurations as well as poorly regulated 5V or 12V adapters and the output can be set to any voltage from 0.8V to 18V. The LTC3119 has a low 35µA quiescent current, programmable switching frequency from 400kHz to 2MHz and can deliver up to 98% conversion efficiency allowing design flexibility and a low noise output. Broad Line of Monolithic Buck-Boost Converters Part Number VIN Range (V) VOUT Range (V) IOUT in Buck Mode (A) Comments LTC3114-1 LTC3118 LTC3115 LTC3112 LTC3113 2.2 to 40 2.2 to 18 2.7 to 40 2.7 to 15 1.8 to 5.5 2.7 to 40 2 to 18 2.7 to 40 2.5 to 14 1.8 to 5.5 1 2 2 2.5 4 IQ = 30μA, Efficiency up to 96%, Programmable Output Current Dual Input PowerPath™, Efficiency up to 94% IQ = 30μA, Efficiency up to 95%, UVLO IQ = 50μA, Efficiency up to 95%, OVP, Output Disconnect IQ = 40μA, Efficiency up to 96%, Output Disconnect LTC3119 LTM8054 LTM8056 LTM8055 LTM4607 2.5 to 18 5 to 36 5 to 58 5 to 36 4.5 to 36 0.8 to 18 1.2 to 36 1.2 to 48 1.2 to 36 0.8 to 24 5 5.4 5.5 8.5 10 LTM4609 4.5 to 36 0.8 to 34 10 IQ = 35μA, Efficiency up to 98%, MPPC 15mm x 11.25mm x 3.42mm BGA Package, Internal Inductor 15mm x 15mm x 4.92mm BGA Package, Internal Inductor 15mm x 15mm x 4.92mm BGA Package, Internal Inductor 15mm x 15mm x 2.82mm LGA Package, External Inductor 15mm x 15mm x 2.82mm LGA or 15mm x 15mm x 3.42mm BGA Package, External Inductor LTM4605 4.5 to 20 0.8 to 16 12 15mm x 15mm x 2.82mm LGA Package, External Inductor Info & Free Samples www.linear.com/product/LTC3119 1-800-4-LINEAR , LT, LTC, LTM, Linear Technology, the Linear logo and PowerPath are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Switching Regulators—Monolithic LTC3119 18V, 5A Synchronous Buck-Boost DC/DC Converter FEATURES DESCRIPTION Input Voltage Range: 2.5V to 18V nn Runs Down to V IN = 250mV After Start-Up nn Output Voltage Range: 0.8V to 18V nn 5A Output Current in Buck Mode, V IN > 6V nn 3A Output Current for V = 3.6V, V IN OUT = 5V nn Programmable Switching Frequency: 400kHz to 2MHz nn Synchronizable with an External Clock Up to 2MHz nn Accurate Run Comparator Threshold nn Burst Mode Operation, No-Load I Q = 35µA nn Ultralow Noise Buck-Boost PWM nn Current Mode Control nn Maximum Power Point Control nn Power Good Indicator nn Internal Soft-Start nn 28-Lead 4mm × 5mm QFN and TSSOP Packages The LTC3119 is a high efficiency 18V monolithic buck-boost converter that can deliver up to 5A of continuous output current. Extensive feature integration and very low resistance internal power switches minimize the total solution footprint for even the most demanding applications. A proprietary 4-switch PWM architecture provides seamless low noise operation from input voltages above, equal to or below the output voltage. nn External frequency programming as well as synchronization using an internal PLL enable operation over a wide switching frequency range of 400kHz to 2MHz. The wide 2.5V to 18V input range is well suited for operation from unregulated power sources including battery stacks and backup capacitors. After start-up, operation is possible with input voltages as low as 250mV. Other features include: output short-circuit protection, thermal overload protection, less than 3µA shutdown current, power good indicator, Burst Mode operation, and maximum power point control. APPLICATIONS The LTC3119 is offered in thermally enhanced 28-lead 4mm × 5mm QFN and TSSOP packages. Wide Input Range Power Supplies nn 1- to 4-Cell Lithium Battery Powered Products nn RF Power Supplies nn Solar Battery Chargers nn System Backup Power Supplies nn Lead-Acid to 12V Regulator nn Efficiency Efficiency 100 TOP VIEW 28 27 26 25 24 23 1 28 PWM/SYNC N/C 2 27 N/C BST2 3 26 BST1 PGND 4 25 PGND SW2 5 24 SW1 PGND 1 22 PGND SW2 2 21 SW1 PVOUT 6 PVOUT 3 20 PVIN 19 PVIN PVOUT 7 SW2 8 18 SW1 PGND 9 PVOUT 4 29 PGND SW2 5 PGND 6 17 PGND PGOOD 7 SVCC 8 15 RUN RT VCC MPPC SGND FB VC 9 10 11 12 13 14 UFD UFDPACKAGE PACKAGE 28-LEAD (4mm (4mm ××5mm) PLASTIC QFN 28-LEAD 5mm) PLASTIC LTC3119EUFD LTC3119IUFD PGOOD 10 SVCC 11 16 VIN 23 PVIN 29 PGND 22 PVIN 18 RUN 16 VCC 40 15 MPPC 1m 10m 100m LOAD CURRENT (A) 1 10 Wide Input Range 5V Regulator FE PACKAGE FE PACKAGE 28-LEAD PLASTIC TSSOP 28-LEAD PLASTIC TSSOP LTC3119EFE LTC3119IFE LTC3119HFE LTC3119MPFE VIN = 3V VIN = 5V VIN = 9V 3119 TA01b 3.3µH 0.1µF 0.1µF VIN 2.5V TO 18V 10µF 100k SW1 BST1 PVIN VIN RUN BURST PWM 4.7µF 20 PWM 50 10 100μ 19 VIN 17 RT 60 20 20 PGND FB 12 70 30 21 SW1 VC 13 SGND 14 QFN 80 N/C EFFICIENCY (%) BST1 N/C PWM/SYNC N/C N/C BST2 TOP VIEW Burst Mode OPERATION 90 SW2 BST2 PVOUT 150µF LTC3119 536k PWM/SYNC FB MPPC VCC PGOOD SVCC VC RT PGND GND 105k VOUT 5V AT 5A, VIN > 6V 5V AT 3A, VIN = 3.6V 3119 TA01a 102k 78.7k 680pF Switching Regulators—Monolithic LT8606 42V, 350mA Synchronous Step-Down Regulator with 2.5µA Quiescent Current FEATURES DESCRIPTION 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 >92% Efficiency at 0.5A, 5V OUT from 12VIN nn 350mA Maximum Continuous Output nn Fast Minimum Switch-On Time: 45ns nn Adjustable and Synchronizable: 200kHz to 2.2MHz nn Spread Spectrum Frequency Modulation for Low EMI nn Allows Use of Small Inductors nn Low Dropout nn Peak Current Mode Operation nn Accurate 1V Enable Pin Threshold nn Internal Compensation nn Output Soft-Start and Tracking nn Small 10-Lead MSOP Package or 8-Lead 2mm × 2mm DFN Package The LT8606 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 1.7µA of non-switching quiescent current. The LT8606 can deliver 350mA of continuous current. 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. 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 LT8606 reducing the input supply current to 1µA. The PG pin signals when VOUT is within ±8.5% of the programmed output voltage as well as fault conditions. nn The LT8606 in the 10-lead MSOP allows selection of low IQ Burst Mode operation, pulse-skipping or spread spectrum operation for low EMI, and can be synchronized to an external clock. The 8-lead 2mm × 2mm DFN package operates in Burst Mode operation. The MSOP has programmable soft-start and tracking. APPLICATIONS General Purpose Step-Down nn Low EMI Step-Down nn 12VIN to 5VOUT Efficiency 100 95 TOP VIEW 1 2 3 4 5 11 GND 10 9 8 7 6 EN/UV VIN PG TR/SS FB SW 2 INTVCC 3 EFFICIENCY (%) BST SW INTVCC RT SYNC 90 8 EN/UV BST 1 TOP VIEW 7 VIN 9 GND 6 PG 5 FB RT 4 MSE PACKAGE 10-LEAD PLASTIC MSOP DC PACKAGE PACKAGE DC 8-LEAD (2mm (2mm ×× 2mm) PLASTIC DFN 8-LEAD LT8606EMSE LT8606IMSE LT8606EDC LT8606IDC 85 80 75 70 65 60 SYNC = 0V L = 4.7µH fSW = 2MHz 55 50 0 50 100 150 200 IOUT (mA) 250 300 350 8606 TA01b 5V, 2MHz Step-Down VIN 5.5V TO 42V 4.7µF ON OFF VIN EN/UV SYNC BST 0.1µF 4.7µH SW 10pF 1M LT8606 INTVCC TR/SS RT 1µF 18.2k GND VOUT 5V 350mA PG FB 22µF 187k 8606 TA01a L = XFL4020-472ME 21 Switching Regulators—Monolithic LT8607 42V, 750mA Synchronous Step-Down Regulator with 2.5µA Quiescent Current FEATURES DESCRIPTION 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 >92% Efficiency at 0.5A, 5V OUT from 12VIN nn 750mA Maximum Continuous Output nn Fast Minimum Switch-On Time: 45ns nn Adjustable and Synchronizable: 200kHz to 2.2MHz nn Spread Spectrum Frequency Modulation for Low EMI nn Allows Use of Small Inductors nn Low Dropout nn Peak Current Mode Operation nn Accurate 1V Enable Pin Threshold nn Internal Compensation nn Output Soft-Start and Tracking nn Small 10-Lead MSOP Package or 8-Lead 2mm × 2mm DFN Package The LT8607 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 1.7µA of non-switching quiescent current. The LT8607 can deliver 750mA of continuous current. 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. 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 LT8607 reducing the input supply current to 1µA. The PG pin signals when VOUT is within ±8.5% of the programmed output voltage as well as fault conditions. nn The LT8607 in the 10-lead MSOP allows selection of low IQ Burst Mode operation, pulse-skipping or spread spectrum operation for low EMI, and can be synchronized to an external clock. The 8-lead 2mm × 2mm DFN package operates in Burst Mode operation. The MSOP has programmable soft-start and tracking. APPLICATIONS General Purpose Step-Down nn Low EMI Step-Down nn 12VIN to 5VOUT Efficiency 100 TOP VIEW BST SW INTVCC RT SYNC 1 2 3 4 5 11 GND 10 9 8 7 6 EN/UV VIN PG TR/SS FB MSE PACKAGE 10-LEAD PLASTIC MSOP LT8607EMSE LT8607IMSE SW 2 INTVCC 3 9 GND 95 8 EN/UV 90 7 VIN 85 EFFICIENCY (%) BST 1 TOP VIEW 6 PG 5 FB RT 4 DC PACKAGE 8-LEAD (2mm (2mm ×× 2mm) PLASTIC DFN 8-LEAD LT8607EDC LT8607IDC 80 75 70 65 60 SYNC = 0V L = 3.3µH fSW = 2MHz 55 50 0 125 250 5V, 2MHz Step-Down VIN 5.5V TO 42V 4.7µF ON OFF VIN EN/UV SYNC BST 0.1µF 3.3µH SW LT8607 INTVCC TR/SS RT 1µF 18.2k GND 10pF PG FB 1M 22µF 187k 8607 TA01a L = XFL4020-332ME 22 VOUT 5V 750mA 375 500 IOUT (mA) 625 750 8607 TA01b Switching Regulators—Monolithic LT8630 100V, 0.6A Synchronous Micropower Step‑Down High Efficiency Switching Regulator FEATURES DESCRIPTION Ultrawide Input Voltage Range: 3V to 100V nn Boundary Mode Switching for Highest Efficiency nn Output Voltage Range: 0.8V to 60V nn Internal Synchronous Switches nn Burst Mode Operation: nn 16µA I Q at 12VIN to 5VOUT nn 7µA I Q at 48VIN to 5VOUT nn Low Dropout: 99% Maximum Duty Cycle nn Peak Current Mode Control nn Programmable Undervoltage Lockout nn Power Good Flag nn Flexible Output Voltage Tracking nn Short-Circuit Protection nn Low Shutdown Current: 5µA nn Tolerates Pin Open/Short Faults nn Thermally Enhanced 20-Lead TSSOP with High Voltage Lead Spacing The LT8630 is a current mode PWM step-down DC/DC converter with internal synchronous switches that provide current for output loads up to 0.6A. The wide input range of 3V to 100V makes the LT8630 suitable for regulating power from a wide variety of sources, including automotive and industrial systems and 36V to 72V telecom supplies. Variable frequency boundary mode switching maximizes efficiency across a wide range of input voltages. Low ripple Burst Mode operation enables high efficiency operation down to very low output currents while keeping the output ripple below 5mV. The soft-start feature controls the ramp rate of the output voltage, eliminating input current surge during start-up, while also providing output tracking. A power good flag signals when the output voltage is within ±7.5% of the regulated output. Undervoltage lockout can be programmed using the EN/UV pin. Shutdown mode reduces the total quiescent current to < 5µA. The LT8630 is available in a 20-lead TSSOP package with exposed pad for low thermal resistance and high voltage lead spacing. nn APPLICATIONS Efficiency at VOUT = 12V Automotive Supplies nn Telecom Supplies nn Distributed Supply Regulation nn 100 90 80 VIN 1 20 SW EN/UV 3 18 BST PG 5 GND 21 EFFICIENCY (%) TOP VIEW 70 60 50 16 INTVCC 40 NC 6 15 NC 30 DNC 7 14 IND 20 RT 8 13 NC NC 9 12 VOUT TR/SS 10 VIN = 24V VIN = 48V VIN = 72V VIN = 100V 0 100 200 300 400 500 600 700 800 LOAD CURRENT (mA) 8630 TA01b 11 FB FE PACKAGE VARIATION FE20(16) 20-LEAD PLASTIC TSSOP LT8630EFE LT8630IFE 12V, 0.6A Step-Down Converter VIN 13V TO 100V 2.2µF VIN BST EN/UV SW PG 0.1µF 22µH LT8630 IND 2.2µF INTVCC VOUT 10pF RT 1M VOUT 12V 0.6A FB 8.66k 71.5k TR/SS GND 47µF 0.1µF 8630 TA01a 23 Switching Regulators—Controllers LTC3897 PolyPhase Synchronous Boost Controller with Input/Output Protection FEATURES DESCRIPTION Input Supply Range: 4.5V to 65V (Up to 75V Surge) nn Reverse Input Protection to –40V nn Inrush Current Control, Overcurrent Protection and Output Disconnect for Boost Converter nn Input Voltage Surge Protection with Adjustable Clamp Voltage nn Onboard Ideal Diode Controller nn Low Quiescent Current: 55µA nn 2-Phase Operation Reduces Required Input and Output Capacitance and Noise nn Output Voltage Up to 60V nn Adjustable Gate Drive Level 5V to 10V (OPTI-DRIVE) for Logic‑Level TOP VIEW or Standard Threshold FETs nn No External Bootstrap Diodes Required 38 37 36 35 34 33 The LTC3897 is a synchronous boost DC/DC controller with surge stopper and ideal diode controller. Industrial nn Automotive nn Military/Avionics nn IS+ SPFB IS – TMR SGEN 24 BG1 INTVCC 9 23 VBIAS 80 22 EXTVCC 34 DG ILIM 6 33 CS SENSE1+ 7 32 SG SENSE1– 8 DTC 9 21 DRVCC ITH 11 SENSE2– 12 20 BG2 13 14 15 16 17 18 19 BOOST2 35 IS+ 5 VFB 17 DRVSET 8 SW2 4 100 25 BOOST1 TG2 FREQ PHASMD SENSE2+ 16 26 SW1 90 CLKOUT 37 SPFB 36 IS – Efficiency and Power Loss vs Output Current 27 TG1 39 GND SS 3 SENSE2– 15 28 VIN 5 VFB PLLIN/MODE ITH 14 29 SG SENSE2+ 38 TMR 2 RUN 13 ILIM 3 SENSE1+ 4 The LTC3897 is available in thermally enhanced 38-lead (leadless) QFN or 38-lead TSSOP packages. UHFPACKAGE PACKAGE UHF 38-LEAD (5mm × 7mm) PLASTIC QFN 38-LEAD (5mm × 7mm) PLASTIC QFN 31 VIN 29 SW1 28 BOOST1 60 1k BURST LOSS 50 100 40 30 VIN = 12V VOUT = 24V Burst Mode OPERATION FIGURE 17 CIRCUIT 10 0 0.001 0.01 0.1 1 OUTPUT CURRENT (A) 10 10 1 3897 G02 27 BG1 26 VBIAS 25 EXTVCC 24 DRVCC 23 BG2 22 BOOST2 SS 18 21 SW2 CLKOUT 19 20 TG2 PACKAGE FE FEPACKAGE 38-LEAD PLASTIC TSSOP 38-LEAD PLASTIC TSSOP LTC3897EFE LTC3897IFE LTC3897HFE 24V/10A 2-Phase Synchronous Boost Converter with Surge Protection and Reverse Protection INPUT VOLTAGE SURGE PROTECTION IN-RUSH/OVERCURRENT PROTECTION VIN 6V TO 55V REVERSE CURRENT PROTECTION (IDEAL DIODE) REVERSE INPUT VOLTAGE PROTECTION 2mΩ BG1 12.1k IS– IS+ 15nF RUN SS TG1 VOUT 10A 24V SENSE2+ SENSE2– BG2 220µF 0.1µF BOOST2 SW2 ITH 4.7µF VIN OPERATES THROUGH TRANSIENTS UP TO 75V. WHEN VIN > 24V, VOUT FOLLOWS VIN UP TO 57V. 3.5µH SW1 LTC3897 DG CS SG VIN 1µF PINS NOT SHOWN IN THIS CIRCUIT: PLLIN/MODE, ILIM, PHASMD, CLKOUT, EXTVCC, SGEN, DGEN 5mΩ 0.1µF BOOST1 10nF 8.66k 3.5µH SENSE1– 549k SPFB 10Ω 5mΩ SENSE1+ VBIAS 33µF 0.1µF 24 10k 70 20 LTC3897EUHF LTC3897IUHF LTC3897HUHF 30 TG1 100k BURST EFFICIENCY POWER LOSS (mW) 1 INTVCC 12 30 CS RUN 10 SGEN DRVSET 11 31 DG DRVUV 7 DGEN DRVUV 10 32 PHASMD 2 DTC 6 TOP VIEW The surge stopper controls the gate of an external N-channel MOSFET to protect against high voltage input transients and provides inrush current control, overcurrent protection and output disconnect for the boost converter. The integrated ideal diode controller drives another N-channel MOSFET to replace a Schottky diode for reverse input protection and voltage holdup or peak detection. It controls the forward voltage drop across the MOSFET and minimizes reverse current flow. FREQ 1 SENSE1– 39 GND The boost controller drives two N-channel power MOSFET stages out-of-phase to reduce input and output capacitor requirements, allowing the use of smaller inductors than the single-phase equivalent. Synchronous rectification reduces power loss and eases thermal requirements. EFFICIENCY (%) APPLICATIONS DGEN PLLIN/MODE nn TG2 INTVCC DRVCC VFB DRVSET DRVUV FREQ DTC 475k 3897 TA01a 24.9k GND TMR 1nF Protected by U. S. Patents, including 5408150, 5481178, 5705919, 5929620, 6144194, 6177787, 6580258. Switching Regulators—Controllers LT8390 60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum FEATURES DESCRIPTION 4-Switch Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT nn Synchronous Switching: Up to 98% Efficiency nn Proprietary Peak-Buck Peak-Boost Current Mode nn Wide V IN Range: 4V to 60V nn ±1.5% Output Voltage Accuracy: 1V ≤ V OUT ≤ 60V nn ±3% Input or Output Current Accuracy with Monitor nn Spread Spectrum Frequency Modulation for Low EMI nn High Side PMOS Load Switch Driver nn Integrated Bootstrap Diodes nn No Top MOSFET Refresh Noise in Buck or Boost nn Adjustable and Synchronizable: 150kHz to 650kHz nn V OUT Disconnected from VIN During Shutdown nn Available in 28-Lead TSSOP with Exposed Pad and 28-Lead QFN (4mm × 5mm) The LT8390 is a synchronous 4-switch buck-boost DC/DC controller that regulates output voltage, input or output current from an input voltage above, below or equal to the output voltage. The proprietary peak-buck/peak-boost current mode control scheme allows adjustable and synchronizable 150kHz to 650kHz fixed frequency operation, or internal ±15% triangle spread spectrum frequency modulation for low EMI. With a 4V to 60V input voltage range, 0V to 60V output voltage capability, and seamless low noise transitions between operation regions, the LT8390 is ideal for voltage regulator, battery and supercapacitor charger applications in automotive, industrial, telecom and even battery-powered systems. nn The LT8390 provides input or output current monitor and power good flag. Fault protection is also provided to detect output shortcircuit condition, during which the LT8390 retries, latches off or keeps running. Efficiency vs VIN APPLICATIONS TG1 4 25 TG2 LSP 5 24 VOUT LSN 6 VIN 7 INTVCC 8 EN/UVLO 17 VC TEST 7 16 FB LOADEN 8 15 SS 20 VC 19 FB LOADEN 11 18 SS VREF 12 17 PGOOD CTRL 13 16 ISMON 90 88 86 LT8390EFE LT8390IFE 0 10 20 30 40 INPUT VOLTAGE (V) 50 60 8390 TA01b LT8390EUFD LT8390IUFD VIN 4V TO 56V 98% Efficient 48W (12V 4A) Miniature Buck-Boost Voltage Regulator 6uH 4mΩ 22µF 63V ×2 4.7µF 100V ×2 0.1µF SW1 LSP BST1 LSN VOUT 12V 4A 120µF 16V 15mΩ BG1 10µF 25V ×2 0.1µF SW2 BST2 120µF 16V BG2 GND 15 ISN PACKAGE FEFEPACKAGE 28-LEADPLASTIC PLASTIC TSSOP 28-LEAD TSSOP IOUT = 4A UFD UFD PACKAGE PACKAGE 28-LEAD (4mm×× 5mm) 5mm) PLASTIC QFNQFN 28-LEAD (4mm PLASTIC 21 RT 9 92 9 10 11 12 13 14 22 SYNC/SPRD TEST 10 ISP 14 18 RT EN/UVLO 6 23 LOADTG 29 GND 19 SYNC/SPRD 29 GND 94 PGOOD 26 SW2 EFFICIENCY (%) 20 LOADTG ISMON 27 BST2 3 SW2 LSN 3 ISN 2 SW1 BST2 21 VOUT ISP BST1 BG2 BST1 SW1 22 TG2 VREF 28 BG2 96 TG1 1 CTRL TOP VIEW 98 LSP 2 VIN 4 1 100 28 27 26 25 24 23 INTVCC 5 BG1 BG1 TOP VIEW Automotive, Industrial, Telecom Systems nn High Power Battery-Powered System nn TG1 383k 1µF 165k ISMON VIN TG2 LT8390 VOUT EN/UVLO ISP LOADTG ISN TEST IOUT LIMIT 6.7A 1µF 100k FB ISMON SSFM OFF SYNC/SPRD CTRL INTVCC 4.7µF LOADEN 0.47µF VREF SS 0.1µF PGOOD RT VC 100pF 27k 9.09k SSFM ON 100k PGOOD 8390 TA01a 100k 400kHz 4.7nF 25 Switching Regulators—Controllers LT8705A 80V VIN and VOUT Synchronous 4-Switch Buck-Boost DC/DC Controller FEATURES DESCRIPTION Single Inductor Allows VIN Above, Below, or Equal to Regulated VOUT nn V IN Range 2.8V (Need EXTVCC > 6.4V) to 80V nn V OUT Range: 1.3V to 80V nn Quad N-Channel MOSFET Gate Drivers nn Synchronous Rectification: Up to 98% Efficiency nn Input and Output Current Monitor Pins nn Synchronizable Fixed Frequency: 100kHz to 400kHz nn Integrated Input Current, Input Voltage, Output Current and Output Voltage Feedback Loops nn Improved Light Load Transition from DCM to FCM nn Improved IMON_OUT, IMON_IN Offset TOP VIEW When Cold nn Clock Output Usable to Monitor 38 37 36 35 34 33 32 SHDN 1 Die Temperature The LT8705A is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The part has integrated input current, input voltage, output current and output voltage feedback loops. With a wide 2.8V to 80V input and 1.3V to 80V output range, the LT8705A is compatible with most solar, automotive, telecom and batterypowered systems. The LT8705A is an improved pin-compatible version of the LT8705 and is recommended for new designs. See LT8705A vs LT8705 in the Applications Information section for more information. FBOUT 6 CSNIN CSPIN INTVCC SWEN VIN 26 SRVO_IIN 39 GND IMON_OUT 7 24 NC SS 9 23 BOOST1 CLKOUT 10 22 TG1 SYNC 11 21 SW1 95 20 NC 5 CSP 6 LDO33 7 FBIN 8 FBOUT 9 UHFPACKAGE PACKAGE UHF 38-LEAD (5mm × 7mm) PLASTIC QFN 38-LEAD (5mm × 7mm) PLASTIC QFN 34 CSPOUT SS 12 VIN 36V TO 80V M1 ×2 + M2 0.22µF 24 SW1 2Ω ×2 GND 16 22 SW2 21 TG2 1 VOUT = 48V ILOAD = 2A 30 40 50 60 VIN (V) 70 80 0 8705A TA01b TG1 BOOST1 SW1 BG1 CSP 20 BOOST2 PACKAGE FEFEPACKAGE VARIATION: FE38(31) VARIATION: FE38(31) 38-LEAD PLASTIC TSSOP M4 M3 ×2 TO DIODE SYNC 14 BG1 17 2 22µH 4.7µF ×4 220µF ×2 26 TG1 GATEVCC 18 3 Telecom Voltage Stabilizer 30 EXTVCC 28 BOOST1 90 80 LT8705AEUHF LT8705AIUHF 32 CSNOUT 4 85 SW2 4 CSN TG2 SHDN BOOST2 36 CSNIN BG2 37 CSPIN 3 GATEVCC 2 BG1 MODE IMON_IN BG2 19 5 25 SRVO_FBIN VC 8 GND 38 VIN 6 27 SRVO_IOUT 13 14 15 16 17 18 19 1 RT 15 Efficiency and Power Loss 100 28 SRVO_FBOUT RT 12 INTVCC CLKOUT 13 29 EXTVCC FBIN 5 TOP VIEW VC 11 30 CSNOUT CSP 3 POWER LOSS (W) High Voltage Buck-Boost Converters nn Input or Output Current Limited Converters IMON_OUT 10 31 CSPOUT CSN 2 LDO33 4 nn 39 GND The LT8705A includes a MODE pin to select among Burst Mode operation, discontinuous or continuous conduction mode at light loads. Additional features include a 3.3V/12mA LDO, a synchronizable fixed operating frequency, and onboard gate drivers. EFFICIENCY (%) APPLICATIONS MODE IMON_IN nn 1nF 10Ω 1nF 10Ω CSN TO DIODE 10mΩ 0.22µF 2Ω ×2 392k GND BG2 SW2 BOOST2 TG2 CSNIN CSPOUT CSPIN CSNOUT EXTVCC VIN 38-LEAD PLASTIC TSSOP LT8705AEFE LT8705AIFE LT8705AHFE LT8705AMPFE 100k SHDN FBOUT SWEN INTVCC LDO33 SRVO_IIN SS SRVO_IOUT IMON_IN 1µF 4.7µF 4.7µF SRVO_FBOUT RT VC 215k 4.7µF SRVO_FBIN FBIN 20k 10k GATEVCC LT8705A MODE 71.5k + 4.7µF ×6 CLKOUT SYNC IMON_OUT 4Ω TO TO BOOST1 BOOST2 56.2k 1µF 220pF 3.3nF 202kHz 8705A TA01 26 VOUT 48V 220µF 5A ×2 Low EMI LED Driver Features 2A, 40V, Integrated, Synchronous Switches for Automotive Lighting Design Note 557 Keith Szolusha right balance of high efficiency and low noise. They can be run at up to 2.5MHz for compact solutions. Introduction The breadth of LED applications has grown to encompass everything from general lighting to automotive, industrial and test equipment, sign boards and safety instruments. Feature requirements for LED drivers have become more extensive. The latest LED solutions require drivers that are compact, efficient, low noise, and have high dimming ratios and advanced fault protection. The LT3922 meets these demands. The tiny LT3922 LED driver features low EMI, high efficiency and fault protection required in automotive environments. It can handle 36V automotive transients and 3V cold crank. Its Silent Switcher® architecture, spread spectrum frequency modulation (SSFM) and controlled switching edges make it ideal for powering LEDs with low EMI. Its flexible topology is useful in daytime running lights, signal lights, taillights, and headlight segments as well as dashboard and heads-up displays with high dimming ratios. Built-in fault protection reduces the number of extra components required to protect against short and open LEDs. The LT3922 synchronous LED driver with integrated 2A, 40V switches can be configured as a boost, buck or boost-buck LED driver. Its high efficiency integrated switches fit into a tiny 4mm × 5mm QFN package. This device integrates Linear’s most advanced switching technologies, condensing high power capability into tight spaces while controlling the edge rates and mitigating unwanted EMI. The LT3922 features controlled switching edges that do not ring—offering just the L, LT, LTC, LTM, Linear Technology, the Linear logo and Silent Switcher are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. OFF VIN 4V TO 30V C4 0.1µF L1 4.7µH FERRITE BEAD FB1 + VIN 449k INTVCC (SSFM ON) SW BST SYNC/SPRD VOUT EN/UVLO GND OVLO VOUT 221k 31.6k ANALOG DIMMING CTRL 91k ON 1µF PWM EXT OR ON 1M 33.2k ISN EXT PWM INT COUT3 2.2µF 50V 2.2µF 300mΩ PWM EXT PWM COUT1, COUT2, C4, C5: 0402 COUT3: 1206 D1: NXP PMEG4010CEJ FB1: WÜRTH 7427920415 FB2: WÜRTH 742792097 L1: COILCRAFT XAL5050-223MEB M1: VISHAY Si2319CDS VREF INT COUT1, COUT2 0.47µF FB ISMON ISP LT3922 100k 100k SYNC 0.1µF 1µF 4.7µF 33µF 50V SYNC EXT PWMTG RP FAULT 332k FAULT INTVCC 100k 2.2µF 33nF SS RT M1 VC 45.3k 2MHz D1 24k 0.22nF C5 0.1µF FERRITE BEAD FB2 LED 34V 330mA Figure 1. 2MHz Automotive Boost LED Driver Features Low EMI and Internally Generated PWM Dimming Has 91% Efficiency and Passes CISPR 25 Class 5 EMI 12/16/557 Built-In Features Enable Low EMI The LT3922 includes a number of features that allow it to easily achieve low EMI. First, it incorporates Linear’s patented Silent Switcher architecture, where internal synchronous switches minimize hot-switching-loop size and controlled switching edges that do not ring. Its pinout enables placement of small, high frequency capacitors near the two VOUT pins to minimize hot-loop size and EMI. The switching edge rate is controlled by the IC, eliminating high frequency ringing that is common to converters without this feature, reducing high frequency EMI without degrading power or efficiency. 50 0.1µF + ANALOG DIMMING 100k SW PEAK RADIATED EMI (dBµV/m) VOUT GND 91k OVLO VOUT ISP PWM RP FAULT 332k 122Hz 100k FAULT INTVCC 33nF 2.2µF SS 45.3k 2MHz FB LED– OPT D2 Q1 1M LED 16V MAX 330mA LED+ FB 71.5k SYNC/SPRD VC RT FERRITE BEAD FB2 0.1µF 300mΩ 1µF ISN ISMON PWMTG FB VREF PWM INT 1000 100k 0.47µF 50V 1µF 0.47µF 50V EXT EXT PWM D1: NXP PMEG4010CEJ PWM FB1, FB2: WÜRTH 742792097 EXT OR ON FB3: WÜRTH 742792040 (RP DEFEAT) L1: WÜRTH 744877100 COUPLED M1: VISHAY Si2319CDS Q1: ZETEX FMMT591A D2: OPT FOR LED-TO-GND SHORT PROTECTION 800 4.7µF 25V 0.1µF BST LT3922 INT 600 L1B 10µH CTRL 1µF 400 Conclusion The LT3922 synchronous LED driver meets the many demands of automotive and industrial LED drivers. EN/UVLO 100k ON 200 The LT3922 boost-buck topology in Figure 3 supports an input voltage range extending above and below the LED string voltage. This patented low EMI topology features a boost-type low ripple input inductor and a buck-type low ripple output-facing inductor. A 4V to 18V input can drive an LED string voltage between 3V and 16V. 196k 53.6k 0 The LT3922 can power LEDs up to 34V as a boost converter. For automotive applications it can be configured as a highest efficiency 400kHz converter or a smallest size 2MHz converter with up to 5000:1 PWM dimming range. 0.1µF VIN CISPR 25, CLASS 5 LIMITS EMI DATA NOISE FLOOR 0 Figure 2. LT3922 Boost Passes CISPR 25 Class 5 Radiated and Conducted EMI 1µF 499k 33µF 50V 10 dn557 F02 L1A 10µH 4.7µF 20 MHz Boost, Buck and Boost-Buck Since LEDs are light sources driven by controlled current, either or both of LED+ and LED – can be attached to non-ground potentials. This opens options for LED driver topologies, including boost-buck (stepup and step-down) and buck mode (step-down). The high side PWMTG driver and low EMI switches can be configured as boost, buck, or boost-buck LED drivers while retaining use of all of the IC’s desirable features—low EMI, SSFM and internal PWM dimming. FERRITE BEAD FB3 VIN = 14V VLED = 32V ILED = 330mA f = 2MHz 30 –10 SSFM in the LT3922 spreads the resistor-set switching frequency up and down from 100% to 125% of its value. This decreases both peak and average EMI in the converter at low and high frequencies. VIN 4V TO 18V 40 OFF SYNC EXT 0.1µF M1 D1 FERRITE BEAD FB1 SYNC INTVCC (SSFM ON) 10k 470pF Figure 3. 2MHz Boost-Buck LED Driver with Low Input and Output Ripple. Passes CISPR 25 Class 5 EMI Data Sheet Download www.linear.com/LT3922 For applications help, call (408) 432-1900, Ext. 3801 Linear Technology Corporation DN557 LT/AP 1216 71K • PRINTED IN THE USA (408) 432-1900 LINEAR TECHNOLOGY CORPORATION 2016 1630 McCarthy Blvd., Milpitas, CA 95035-7417 ● FAX: (408) 434-0507 ● www.linear.com Bidirectional DC/DC Regulator and Supercapacitor Charger Design Note 558 Victor Khasiev Introduction The LTC ®3110 bidirectional buck-boost DC/DC regulator charges and balances a supercapacitor when a bus voltage is present (for example 3.3V) and discharges the supercapacitor into the load when the bus fails. The LTC3110 maintains the bus’s nominal level (3.3V in the example in Figure 1) even if the supercapacitor voltage is above or below the nominal bus voltage. Supporting the load this way allows data backup and retention during a power interruption—important in a wide variety of industrial and automotive applications. Industrial applications, however, share something in common with consumer electronics: the trend toward increased portability and mobility. Space is increasingly limited for electronics inside modern industrial equipment. The volume, in particular the thickness, of a data storage unit is at a premium in industrial assemblies and modules. With that in mind, the solution herein aims to minimize the profiles of the selected components. Table 1 shows two passive component group options, arranged by thickness: 1mm and 2.5mm. The required semiconductor parts are not listed because the controllers, MOSFETs and resistors do not exceed 1mm thickness. Low Profile Data Backup Power Supply Industrial and automotive applications are distinguished by their lack of stable, high quality voltage sources. In automotive environments, a 12V nominal voltage rail can change from 4V to above 40V during cold starts and load dumps. The 24V equipment bus used in factories and plants suffers voltage spikes and brownouts just from cycling electric motors and solenoids. LOAD RAIL VSYS 3.5V, 1A, NOMINAL 3.2V, 0.2A, BACKUP L, LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. BAV70W 4.7µF 3.32k LOAD VIN OPTIONAL Q1 Si2333DDS Figure 2 shows a low profile energy storage solution for data backup or wireless data transmission in situations where the input voltage changes in an extremely wide range from 4V to 40V, with possible input voltage interruption. 24Ω 866k 1.02MΩ 478k 3.01k LTC3110EFE RUN SW1 VSYS SW1 VSYS SW2 SW2 SVSYS VCAP MODE VCAP VMD PROG CS.1 0.6F L1 5.6µH + + FB DIR 205k VCAP 1.9MΩ FBVCAP 511k CHRG SGND PGND PGND CMPIN RSEN CAPOK CMPOUT 100k Figure 1. LTC3110 Application, VSYS = 3.3V, VCAP = 5.0V 01/17/558 DN5VK2 F01 + OPT + SBR3U60P1 0.1µF 1MΩ LT8608EMSE VIN BST CIN1.2 1µF 0.01µF 18.2k 2MHz 100µF 4.7µF L2 2.2µH EN/RUN CIN1.1 0.22µF SYNC SW VCC PG BAV70W LOAD INPUT RAIL VIN 4V TO 42V LOAD BUS VSYS 3.5V, 1A, NOMINAL 3.2V, 0.2A, BACKUP 24Ω 866k 3.01k 1MΩ 10pF FB TR/SS 1.02M 478k 287k LTC3110EFE RUN SW1 VSYS SW1 VSYS SW2 SW2 SVSYS VCAP MODE VCAP VMD PROG CS.1 0.6F L1 5.6µH VCAP + + FB DIR 205k 1.9MΩ FBVCAP 100k RT STORAGE CAPACITOR GND CHRG SGND PGND PGND CMPIN RSEN CAPOK 511k 100k CMPOUT DN5VK2 F02 Figure 2. LTC3110, High Voltage Application, VIN = 4V to 40V, VSYS = 3.3V, VCAP = 5.0V This solution uses two converters to produce a complete industrial/automotive application. The converter, based on the LTC3110 supercapacitor charger (SCCH), charges the storage capacitor when the input voltage is present and provides a regulated system output during power interruption. Under normal operating conditions, when a 4V to 40V input supply is present, sensitive electronic loads and the LTC3110 are supported by a step-down converter (SDC) based on the LT8608. voltages are well within the recommended limits for 3.3V logic power supplies. The CHRG flag can be used to alert digital systems to disconnect non-essential loads and begin data backup or wireless transmission. Figure 3 shows the beginning of the switchover process; with the input voltage disconnected, the SDC turns off while the SCCH is turning on. VIN 2V/DIV VSYS 1V/DIV The LT8608 is a low quiescent current, high efficiency, highly integrated synchronous buck converter featuring a wide input voltage range extending from 3V to 42V. Its 42V upper limit minimizes the volume required for system protection circuitry, practically eliminating the need for traditional transient voltage suppressor diodes (TVS). The SDC maintains the system voltage within 3.3V bus rail limits. Figure 3. Switchover [VSYS Load Voltage, VIN Input Voltage, CHRG Flag Status] If the input voltage is disconnected, the SCCH takes over, powering the regulated 3.3V rail. The LT8608 supplies 3.5V to the system bus under normal circumstances; the LTC3110 supplies 3.2V when it registers a power failure and supports the load. These supply Conclusion LTC3110 is a highly integrated, high performance supercapacitor charger and balancer, which can be implemented in low profile solutions for data retention and backup in automotive and industrial applications. CHRG 1V/DIV 1ms/DIV DN5VK2 F03 Table 1. Converter Components for 1mm and 2.5mm Thickness Solutions Height L1 L2 CS1 CIN1 Vendor Wurth Elektronik Wurth Elektronik CAP-XX TDK 1mm 74437321022 74437321056 2 x HS103F 2 x C3216JB1H475K085AB 2.5mm 74437334022 74437334056 HS206F C3225X7R2A225K230AB Data Sheet Download www.linear.com/LTC3110 For applications help, call (408) 432-1900, Ext. 3161 Linear Technology Corporation dn558f LT/AP 0117 71K • PRINTED IN THE USA (408) 432-1900 LINEAR TECHNOLOGY CORPORATION 2016 1630 McCarthy Blvd., Milpitas, CA 95035-7417 ● FAX: (408) 434-0507 ● www.linear.com Sales Offices N O RTH A M ER I CA WESTE R N U .S. 7805 Telegraph Rd., Ste. 225 Bloomington, MN 55438 Tel: (952) 903-0605 IN D IA Calgary, AB Tel: (403) 455-3577 602, 6th Floor, Prestige Meridian-1 No. 29, MG Road, Bangalore 560001, India Tel: +91 80 4012-4610 Fax: +91 80 4012-4612 2085 E. 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With over 50,000 customer networks in over 120 countries, SmartMesh is field-proven to deliver >99.999% data reliability and >10 year battery life. Customers trust SmartMesh to deliver their business-critical data and enable their Industrial IoT businesses. Features Reliable Wireless Sensor Network Streamlines Manufacturing Operations Learn More www.linear.com/SmartMesh • The Only Network Built for Industrial IoT • Complete Networking Software Speeds 1-800-4-LINEAR Development • Engineered for Years of Trouble-Free Operation video.linear.com/7254 , LT, LTC, LTM, Linear Technology, SmartMesh and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.