Maxim MAX15006BASA+ (73-863-00)

Maxim MAX15006BASA+ (73-863-00)
19-0663; Rev 1; 5/08
40V, Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
The MAX15006/MAX15007 ultra-low quiescent-current
linear regulators are ideal for use in automotive and battery-operated systems. These devices operate from an
input voltage of 4V to 40V, deliver up to 50mA of output
current, and consume only 10µA of quiescent current at
no load. The internal p-channel pass device keeps the
quiescent current low even at full load. The MAX15007
consumes only 3µA current when in shutdown.
The MAX15006A/MAX15007A have a fixed 3.3V output
while the MAX15006B/MAX15007B have a fixed 5V output voltage. The MAX15006C/MAX15007C feature an
adjustable output from 1.8V to 10V. The MAX15007
includes an enable input to turn the device on or off. All
devices are short-circuit protected and include thermal
shutdown.
The MAX15006/MAX15007 operate over the -40°C to
+125°C automotive temperature range. These devices
are available in space-saving 3mm x 3mm 6-pin TDFN
and 8-pin SO thermally enhanced packages.
Features
♦ Wide Operating Input Voltage Range (4V to 40V)
♦ Guaranteed 50mA Output Current
♦ Low Quiescent Current
10µA (No Load) and 90µA (Full Load)
♦ Operates Through Cold-Crank Condition
♦ Withstands 45V Load Dump
♦ Low Dropout Voltage of 300mV
(MAX15006B/MAX15007B)
♦ Stable Operation with Tiny 2.2µF Output
Capacitor
♦ Enable Input (MAX15007)
♦ Preset 3.3V and 5.0V Output Voltages
♦ 1.8V to 10V Adjustable Output (MAX15006C/
MAX15007C)
♦ Thermal and Short-Circuit Protection
♦ -40°C to +125°C Operating Temperature Range
♦ Thermally Enhanced 3mm x 3mm 6-Pin TDFN/
8-Pin SO Packages
Ordering Information
Applications
PART
Automotive
MAX15006AASA+
Tire-Pressure Monitoring
MAX15006AATT+
Industrial
-40°C to +125°C 8 SO-EP**
-40°C to +125°C 6 TDFN-EP**
-40°C to +125°C 8 SO-EP**
-40°C to +125°C 6 TDFN-EP**
MAX15006BASA+
Telecom
PINPACKAGE
TEMP RANGE
TOP
MARK
—
APE
—
MAX15006BATT+
APF
Ordering Information continued at end of data sheet.
+Denotes a lead-free/RoHS-compliant package.
*Future product—contact factory for availability.
**EP = Exposed pad.
Networking
Pin Configurations
TOP VIEW
OUT OUT (FB)
6
5
GND
MAX15006A
MAX15006B
MAX15006C
*EP
+
MAX15006A
MAX15006B
MAX15006C
4
1
2
3
IN
IN
N.C.
TDFN
Pin Configurations continued at end of data sheet.
IN
1
N.C.
N.C.
+
8
OUT
2
7
N.C. (FB)
3
6
N.C.
5
GND
N.C. 4
*EP
SO
*EXPOSED PAD
( ) FOR MAX15006C ONLY.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1
MAX15006/MAX15007
General Description
MAX15006/MAX15007
40V, Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
ABSOLUTE MAXIMUM RATINGS
IN to GND ...............................................................-0.3V to +45V
EN to GND..............................................................-0.3V to +45V
OUT, FB to GND.....................................................-0.3V to +12V
OUT Short-Circuit Duration ........................................Continuous
Maximum Current Into Any Pin (except IN and OUT) ......±50mA
Continuous Power Dissipation (TA = +70°C)
6-Pin TDFN-EP (derate 23.8mW/°C above +70°C).........1904mW
8-Pin SO-EP (derate 23.3mW/°C above +70°C)...........1860mW
Thermal Resistance (Note 1)
θJA, 6-Pin TDFN ...........................................................42°C/W
θJC, 6-Pin TDFN ..........................................................8.5°C/W
θJA, 8-Pin SO-EP ..........................................................43°C/W
θJC, 8-Pin SO-EP ............................................................7°C/W
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a fourlayer board. For detailed information on package thermal considerations, see www.maxim-ic.com/thermal-tutorial.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = 14V, IOUT = 1mA, CIN = 0.1µF, COUT = 2.2µF, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical specifications are at
TA = +25°C.) (Note 2)
PARAMETER
Input Voltage Range
SYMBOL
CONDITIONS
VIN
MIN
Shutdown Supply Current
IGND
ISHDN
UNITS
40
V
10
IOUT = 0 (MAX15006C)
8
15
IOUT = 0 (MAX15007A/B)
11
18
9
16
10.5
18
IOUT = 100µA (MAX15006A/B)
Regulator on,
measured at GND
MAX
IOUT = 0 (MAX15006A/B)
IOUT = 0 (MAX15007C)
Ground Current
TYP
4
17
IOUT = 100µA (MAX15006C)
8.5
16
IOUT = 100µA (MAX15007A/B)
11.5
19
IOUT = 100µA (MAX15007C)
9.5
17
IOUT = 1mA (MAX15006A/B)
12
20
IOUT = 1mA (MAX15006C)
10
18
IOUT = 1mA (MAX15007A/B)
13
21
IOUT = 1mA (MAX15007C)
11
19
IOUT = 50mA (MAX15006)
90
150
IOUT = 50mA (MAX15007)
93
150
3
5
Regulator off (MAX15007 only)
µA
µA
REGULATOR
Guaranteed Output Current
Output Voltage (Note 3)
Dropout Voltage (Notes 4, 5)
IOUT
VOUT
ΔVDO
VIN ≥ VOUT + ΔVDO
IOUT = 1mA
50
mA
MAX15006A/MAX15007A
3.25
3.3
3.35
MAX15006B/MAX15007B
4.925
5.0
5.075
MAX15006C/MAX15007C
1.8
10
IOUT = 5mA, MAX15006B/MAX15007B
30
53
IOUT = 5mA, MAX15006C/MAX15007C
30
60
IOUT = 50mA, MAX15006B/MAX15007B
300
525
IOUT = 50mA, MAX15006C/MAX15007C
300
600
IOUT = 50mA, MAX15006A/MAX15007A
2
V
_______________________________________________________________________________________
700
mV
40V, Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
(VIN = 14V, IOUT = 1mA, CIN = 0.1µF, COUT = 2.2µF, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical specifications are at
TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
Line Regulation
6V ≤ VIN ≤ 35V, IOUT = 1mA
Load Regulation
VIN = VOUT + 3V, IOUT = 100µA to 50mA
Output Current Limit
TYP
0.7
80
Output Voltage Noise
Power-Supply Rejection Ratio
MIN
PSRR
100Hz to 100kHz, IOUT VOUT = 3.3V
= 50mA, COUT = 2.2µF VOUT = 5V
115
f = 100Hz, VIN_RIPPLE = 500mVP-P, IOUT = 50mA
66
FB Threshold Voltage
VFB
ILOAD = 1mA (MAX15006C/MAX15007C only)
FB Input Current
IFB
VFB = 0V, 1.5V (MAX15006C/MAX15007C only)
MAX
UNITS
0.25
%
1.5
%
350
mA
µVRMS
179
1.2
1.23
-100
dB
1.26
V
+100
nA
ENABLE LOGIC
Enable Threshold Voltage
VIL
0.4
VIH
1.4
Enable Threshold Hysteresis
60
Enable Pulldown Current
Internally pulled down to GND
0.5
Enable to Regulation Time
(Note 6)
0.4
V
mV
µA
2
ms
THERMAL SHUTDOWN
Thermal Shutdown
TSHDN
Thermal Shutdown Hysteresis
THYST
Junction temperature rising
+165
°C
20
°C
Limits at TA = -40°C are guaranteed by design.
Output voltage regulation is guaranteed for IOUT ≥ 5µA.
Dropout voltage is defined as (VIN - VOUT) when VOUT is 2% below the value of VOUT when VIN = VOUT + 3V.
For VOUT = 3.3V, the 700mV dropout indicates VOUT does not reach 2% below VOUT at VIN = VOUT + 3V at minimum 4V
input voltage.
Note 6: Enable to regulation time is the time the output takes to reach 95% of its final value with VIN = 14V and EN is taken from VIL
to VIH in 5ns.
Note 2:
Note 3:
Note 4:
Note 5:
_______________________________________________________________________________________
3
MAX15006/MAX15007
ELECTRICAL CHARACTERISTICS (continued)
Typical Operating Characteristics
(VIN = 14V, CIN = 0.1µF, COUT = 2.2µF, VEN = VIN, TA = +25°C, unless otherwise noted.)
OUTPUT VOLTAGE vs. INPUT VOLTAGE
(MAX15006B/MAX15007B)
5.0
4.5
2.4
2.1
3.39
1.5
1.2
0.9
VOUT (V)
VOUT (V)
1.8
3.0
2.5
5
10
15
20
25
30
35
3.30
1.5
3.24
1.0
3.21
0.5
40
IOUT = 50mA
3.18
IOUT = 0
0
0
3.33
3.27
2.0
IOUT = 0
IOUT = 1mA
3.36
3.5
0
3.15
5
0
10
15
20
25
30
35
40
-50
-25
0
25
50
75
100 125 150
VIN (V)
VIN (V)
TEMPERATURE (°C)
OUTPUT VOLTAGE vs. TEMPERATURE
(MAX15006B/MAX15007B)
DROPOUT VOLTAGE vs. LOAD CURRENT
(MAX15006B/MAX15007B)
GROUND CURRENT vs. LOAD CURRENT
(MAX15006B/MAX15007B)
IOUT = 1mA
350
VDROPOUT (mV)
5.10
TA = +125°C
400
5.05
5.00
4.95
100
90
80
300
TA = -40°C
200
60
40
30
100
20
4.80
50
10
4.75
0
IOUT = 50mA
4.85
-50
-25
0
25
50
TA = -40°C
0
0
100 125 150
75
TA = +25°C
50
150
4.90
TA = +125°C
70
TA = +25°C
250
MAX15006 toc06
5.15
450
IGND (μA)
5.20
MAX15006 toc05
500
MAX15006 toc04
5.25
5
10 15 20 25 30 35 40 45 50
0
5
10 15 20 25 30 35 40 45 50
TEMPERATURE (°C)
IOUT (mA)
IOUT (mA)
GROUND CURRENT vs. TEMPERATURE
(IOUT = 0)
GROUND CURRENT vs. TEMPERATURE
(IOUT = 50mA)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
16
14
99
10
98
9
8
97
VIN = +40V
8
VIN = +14V
6
VIN = +6V
96
95
94
5
3
92
2
2
91
1
0
90
0
25
50
75
TEMPERATURE (°C)
100 125 150
VIN = +6V
4
93
-25
VIN = +14V
6
4
-50
VIN = +40V
7
ISHDN (μA)
10
IGND (μA)
12
MAX15006 toc09
100
MAX15006 toc07
18
MAX15006 toc08
VOUT (V)
3.42
4.0
0.6
0.3
4
3.45
MAX15006 toc02
3.0
2.7
VOUT (V)
5.5
MAX15006 toc01
3.6
3.3
OUTPUT VOLTAGE vs. TEMPERATURE
(MAX15006A/MAX15007A)
MAX15006 toc03
OUTPUT VOLTAGE vs. INPUT VOLTAGE
(MAX15006A/MAX15007A)
IGND (μA)
MAX15006/MAX15007
40V, Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
0
-50
-25
0
25
50
75
TEMPERATURE (°C)
100 125 150
-50
-25
0
25
50
75
TEMPERATURE (°C)
_______________________________________________________________________________________
100 125 150
40V, Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
24
21
NUMBER OF UNITS
NUMBER OF UNITS
21
18
15
12
9
MAX15007, IOUT = 0
50 UNITS TESTED
18
15
12
6
27
9
21
18
15
12
9
6
6
3
3
3
0
0
0
10.4
10.5
10.6
10.7 10.8
10.9
11.0
10.8
10.9
11.0
11.1 11.2
11.3
11.6
11.4
IGND (μA)
IGND (μA)
LOAD-TRANSIENT RESPONSE
(MAX15006B/MAX15007B)
INPUT-VOLTAGE STEP RESPONSE
(MAX15006B/MAX15007B, IOUT = 1mA)
MAX15006 toc13
MAX15007, IOUT = 0
50 UNITS TESTED
24
NUMBER OF UNITS
24
27
MAX15006 toc11
MAX15007, IOUT = 0
50 UNITS TESTED
MAX15006 toc10
27
GROUND CURRENT DISTRIBUTION
(TA = +125°C)
GROUND CURRENT DISTRIBUTION
(TA = +25°C)
MAX15006 toc12
GROUND CURRENT DISTRIBUTION
(TA = -40°C)
11.7
11.8
11.9
12.0
12.1
IGND (μA)
STARTUP RESPONSE
MAX15006 toc14
VOUT
AC-COUPLED
200mV/div
50mA
IOUT
1mA
MAX15006 toc15
18V
VIN
14V
VIN
5V/div
VOUT
AC-COUPLED
100mV/div
VOUT
2V/div
MAX15006B/MAX15007B
IOUT = 1mA
400μs/div
400μs/div
ENABLE STARTUP RESPONSE
ENABLE STARTUP RESPONSE
MAX15006 toc16
MAX15006B/MAX15007B
IOUT = 0
400μs/div
200μs/div
ENABLE STARTUP RESPONSE
MAX15006 toc17
MAX15006 toc18
EN
1V/div
EN
1V/div
EN
1V/div
VOUT
2V/div
VOUT
2V/div
VOUT
2V/div
MAX15006B/MAX15007B
IOUT = 50mA
400μs/div
MAX15006B/MAX15007B
VIN = 40V, IOUT = 0
400μs/div
_______________________________________________________________________________________
5
MAX15006/MAX15007
Typical Operating Characteristics (continued)
(VIN = 14V, CIN = 0.1µF, COUT = 2.2µF, VEN = VIN, TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
(VIN = 14V, CIN = 0.1µF, COUT = 2.2µF, VEN = VIN, TA = +25°C, unless otherwise noted.)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
IOUT = 50mA
-10
-20
EN
1V/div
PSRR (dB)
-30
COUT = 2.2μF
-40
-50
-60
-70
VOUT
2V/div
-80
MAX15006B/MAX15007B
VIN = 40V, IOUT = 50mA
COUT = 10μF
-90
-100
0.01
400μs/div
0.1
1
10
1
0.1
MAX15006A/MAX15007A
IOUT = 50mA
0.01
1000
100
10
MAX15006 toc21
0
OUTPUT-NOISE SPECTRAL DENSITY
vs. FREQUENCY
OUTPUT-NOISE SPECTRAL DENSITY (μV/√Hz)
MAX15006 toc19
MAX15006 toc20
ENABLE STARTUP RESPONSE
0.01
0.1
FREQUENCY (kHz)
10
OUTPUT VOLTAGE NOISE
vs. LOAD CURRENT
MAX15006 toc23
150
MAX15006 toc22
135
120
105
1
en (μVRMS)
0.1
90
75
60
45
30
MAX15006B/MAX15007B
IOUT = 50mA
15
MAX15006A/MAX15007A
0
0.01
0.01
0.1
1
10
0
100
5
10 15 20 25 30 35 40 45 50
FREQUENCY (kHz)
IOUT (mA)
FB VOLTAGE vs. INPUT VOLTAGE
(MAX15007C, VOUT = 5V)
FB VOLTAGE vs. TEMPERATURE
(MAX15007C, VOUT = 5V)
1.230
MAX15006 toc24
1.230
1.229
MAX15006 toc25
OUTPUT-NOISE SPECTRAL DENSITY (μV/√Hz)
10
1
FREQUENCY (kHz)
OUTPUT-NOISE SPECTRAL DENSITY
vs. FREQUENCY
1.229
1.228
1.227
1.228
VFB (V)
VFB (V)
MAX15006/MAX15007
40V, Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
1.226
1.225
1.224
1.227
1.223
1.222
1.226
1.221
1.220
1.225
5
10
15
20
25
VIN (V)
6
30
35
40
-50
-25
0
25
50
75
100 125 150
TEMPERATURE (°C)
_______________________________________________________________________________________
100
40V, Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
OUTPUT VOLTAGE NOISE
vs. OUTPUT CAPACITANCE
CLAMPED LOAD DUMP
(IOUT = 0)
MAX15006 toc27
MAX15006 toc26
150
135
120
40V
VIN
en (μVRMS)
105
90
13.5V
75
60
45
VOUT
AC-COUPLED
20mV/div
30
MAX15006A/MAX15007A
IOUT = 25mA
15
0
0
2
4
6
8 10 12 14 16 18 20 22
100ms/div
COUT (μF)
Pin Description
PIN
MAX15006A/B
MAX15006C
MAX15007A/B
MAX15007C
NAME
FUNCTION
Regulator Supply Input. Supply voltage ranges
from 4V to 40V. Bypass with a 0.1µF capacitor to
GND.
TDFN
SO
TDFN
SO
TDFN
SO
TDFN
SO
1, 2
1
1, 2
1
1, 2
1
1, 2
1
IN
3
2, 3,
4, 6, 7
3
2, 3, 4,
6
—
2, 4, 6,
7
—
2, 4, 6
N.C.
No Connection. Not internally connected.
4
5
4
5
4
5
4
5
GND
Ground
5, 6
8
6
8
5, 6
8
6
8
OUT
Regulator Output. Bypass OUT to GND with a
low-ESR capacitor with a minimum 2.2µF.
—
—
—
—
—
—
5
—
—
7
—
—
—
3
—
—
3
—
5
3
—
7
3
—
FB
Feedback Regulation Set-Point. Connect an
external resistive divider network from OUT to FB
to GND to adjust the output voltage from 1.8V to
10V.
EN
Active-High Enable Input. Force EN high (or
connect to VIN) to turn the regulator on. Pull EN
low (or leave unconnected) to place the device
in a low-power shutdown mode. EN is internally
pulled down to GND through a 0.5µA sink
current.
EP
Exposed Pad. Internally connected to GND.
Connect EP to the ground plane for enhanced
thermal performance. Do not use EP as a
ground connection.
_______________________________________________________________________________________
7
MAX15006/MAX15007
Typical Operating Characteristics (continued)
(VIN = 14V, CIN = 0.1µF, COUT = 2.2µF, VEN = VIN, TA = +25°C, unless otherwise noted.)
40V, Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
MAX15006/MAX15007
Functional Diagrams
IN
-
FET DRIVER
WITH
CURRENT LIMIT
+
THERMAL
SENSOR
1.242V
REF
ERROR
AMPLIFIER
OUT
FB
(FOR MAX15006C ONLY)
GND
MAX15006
(FOR MAX15006A/B ONLY)
Figure 1. MAX15006 Simplified Functional Diagram
IN
EN
CONTROL
LOGIC
+
THERMAL
SENSOR
1.242V
REF
FET DRIVER
WITH
CURRENT LIMIT
ERROR
AMPLIFIER
OUT
FB
(FOR MAX15007C ONLY)
GND
MAX15007
(FOR MAX150076A/B ONLY)
Figure 2. MAX15007 Simplified Functional Diagram
8
_______________________________________________________________________________________
40V, Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
Regulator
VIN = 18V, VOUT = 5V
50
OUTPUT CURRENT (mA)
45
VIN = 18V,
VOUT = 3.3V
40
35
30
25
VIN = 26V, VOUT = 5V
20
15
10
55
VIN = 26V, VOUT = 3.3V
5
VIN = 18V, VOUT = 5V
50
45
OUTPUT CURRENT (mA)
55
Output Short-Circuit Current Limit
The MAX15006/MAX15007 feature a 175mA current
limit. The output can be shorted to GND for an indefinite
period of time without damage to the device. During a
short circuit, the power dissipated across the pass transistor can quickly heat the device. When the die temperature reaches +165°C, the MAX15006/
MAX15007 shut down and automatically restart after
the die temperature cools by 20°C.
MAX15006 fig03a
The regulator accepts an input voltage from 4V to 40V.
The MAX15006A/MAX15007A have a fixed 3.3V output
voltage while the MAX15006B/MAX15007B offer a fixed
5V output voltage. The MAX15006C/MAX15007C feature an adjustable voltage output by connecting an
external resistive divider from OUT to FB and to GND
(see the Output Voltage Setting section).
Thermal Protection
When the junction temperature exceeds +165°C, an
internal thermal sensor turns the pass transistor off, and
allows the device to cool. The thermal sensor turns the
pass transistor on again after the junction temperature
cools by 20°C. This results in a cycled output during
continuous thermal-overload conditions. Thermal protection protects the MAX15006/MAX15007 in the event
of fault conditions. Operation at TJ = +150°C without
going into thermal shutdown is not guaranteed. Use
Figures 3a and 3b to determine the minimum guaranteed output current.
MAX15006 fig03b
The MAX15006/MAX15007 high-voltage linear regulators
operate over a 4V to 40V input voltage range. These
devices guarantee 50mA load drive, and offer preset
output voltages of +3.3V (MAX15006A/MAX15007A) or
+5V (MAX15006B/MAX15007B) or an adjustable voltage
output from 1.8V to 10V (MAX15006C/MAX15007C).
Thermal shutdown and short-circuit protection prevent
damage during overtemperature and overcurrent conditions. The MAX15007 includes an enable input (EN)
allowing the regulators to be turned on/off using a logiclevel voltage. Driving EN high turns on the device while
driving EN low places the device in a low-power shutdown mode. In shutdown, the supply current is reduced
to 3µA (typ). The MAX15006/MAX15007 operate over the
-40°C to +125°C automotive temperature range. All
devices are available in thermally enhanced 6-pin TDFN
and 8-pin SO packages capable of dissipating 1.904W
and 1.860W at TA = +70°C, respectively.
EN Input (MAX15007 Only)
EN is an active-high, logic-level enable input that turns
the device on or off. Drive EN high to turn the device
on. An internal 0.5µA pulldown current keeps the
MAX15007 in shutdown mode when driven by a threestate driver in high-impedance mode, or an open-drain
driver. While in shutdown, the device consumes only
3µA (typ). EN withstands voltages up to 40V, allowing it
to be driven by high input level voltages or connected
to IN for always-on operation.
VIN = 18V,
VOUT = 3.3V
40
35
30
25
VIN = 26V, VOUT = 5V
20
15
10
VIN = 26V, VOUT = 3.3V
5
0
0
80 85 90 95 100 105 110 115 120 125 130
80 85 90 95 100 105 110 115 120 125 130
AMBIENT TEMPERATURE (°C)
AMBIENT TEMPERATURE (°C)
Figure 3a. Minimum Output Current vs. Ambient Temperature
(6-Pin TDFN-EP)
Figure 3b. Minimum Output Current vs. Ambient Temperature
(8-Pin SO-EP)
_______________________________________________________________________________________
_______________________________________________________________________________________ 99
MAX15006/MAX15007
Detailed Description
Output Voltage Setting
The MAX15006C/MAX15007C provide an adjustable
output voltage from 1.8V to 10V and do not operate in a
preset output voltage mode. Connect an external resistive divider from OUT to FB to GND as shown in Figure
4 to set the desired output voltage. VOUT is calculated
as follows:
⎛ R1 ⎞
VOUT = VFB × ⎜1 +
⎟
⎝ R2 ⎠
For the SO-EP package:
⎧1.8605W for TA ≤ + 70°C
⎫
⎪
⎪
PD = ⎨
⎬
W
+
°
<
≤
+
°
.
−
.
–
°
1
8605
W
0
0233
70
70
125
x
T
C
for
C
T
C
(
)
A
A
⎪
⎪
°C
⎩
⎭
After determining the allowable package dissipation,
calculate the maximum allowable output current, without exceeding the +150°C junction temperature, using
the following formula:
Available Output Current Calculation
The MAX15006/MAX15007 provide up to 50mA of continuous output current. The input voltage range extends to
40V. Package power dissipation limits the amount of output current available for a given input/output voltage and
ambient temperature. Figure 5 shows the maximum
allowable power dissipation for these devices to keep the
junction temperature below +150°C. Figure 5 assumes
that the exposed metal pad of the MAX15006/MAX15007
is soldered to 1in2 of PCB copper.
Use Figure 5 to determine the allowable package dissipation for a given ambient temperature. Alternately, use
the following formulas to calculate the allowable package dissipation. For the TDFN package:
⎧1.9048W for TA ≤ + 70°C
⎫
⎪
⎪
PD = ⎨
⎬
W
.
−
.
–
°
+
°
<
≤
+
°
1
9048
W
0
0238
70
70
125
x
T
C
for
C
T
C
(
)
A
A
⎪
⎪
°C
⎩
⎭
+4V TO +40V
0.1μF
PD = 1.9048W − 0.0238
IOUT(MAX) =
R1
FB
ON
EN
R2
GND
W
(125°C − 70°C) = 595.8mW
°C
And establish the maximum output current:
2.2μF
MAX15007C
OFF
The above equations do not include the negligible
power dissipation from self-heating due to the IC
ground current.
Example 1 (TDFN Package):
TA = +125°C
VIN = 26V
VOUT = 3.3V
Calculate the maximum allowable package dissipation
at the given temperature as follows:
+1.8V TO +10V
OUT
IN
PD
≤ 50mA
VIN − VOUT
IOUT(MAX) =
where V FB = 1.23V and a 5µA minimum current is
required in the external divider for stability.
595.8mW
= 26.2mA
26V − 3.3V
2.4
2.2
2.0
1.9408W
(6-PIN TDFN)
1.8
1.6
1.8605W
(8-PIN SO-EP)
1.4
1.2
1.0
MAX15006 fig04
Applications Information
PD (W)
MAX15006/MAX15007
40V, Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
DERATE
23.8mW/°C
DERATE
23.3mW/°C
0.8
0.6
0.4
0.2
0
0
VOUT = VFB (1 + R1/R2)
VFB = 1.23V
Figure 4. Setting the Adjustable Output Voltage
10
20
40
60 80 100
TEMPERATURE (°C)
120
140
Figure 5. Calculated Maximum Power Dissipation vs. Ambient
Temperature
______________________________________________________________________________________
40V, Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
W
PD = 1.9048W − 0.0238
(85°C − 70°C) = 1.5478W
°C
Then determine the maximum output current:
1.5478W
= 172mA ⇒ IOUT(MAX) = 50mA
14V − 5V
IOUT(MAX) =
Example 3 (TDFN Package):
TA = +50°C
VIN = 9V
VOUT = 5V
Calculate the maximum allowable package dissipation
at the given temperature as follows:
In Examples 2 and 3, the maximum output current is
calculated as 172mA and 476mA, respectively; however, the allowable output current cannot exceed 50mA.
Alternately, use Figures 6a and 6b to quickly determine
the maximum allowable output current for selected
ambient temperatures and input voltages.
Output-Capacitor Selection
and Regulator Stability
For stable operation over the full temperature range
and with load currents up to 50mA, use a low-ESR
2.2µF (min) ceramic or tantalum output capacitor. Use
larger output-capacitor values such as 22µF to reduce
noise, improve load-transient response, and powersupply rejection.
Some ceramic dielectrics exhibit large capacitance and
ESR variations with temperature. Ensure the minimum
capacitance under worst-case conditions does not
drop below 1.3µF to ensure output stability. With an
X7R dielectric, 2.2µF should be sufficient at all operating temperatures.
PD = 1.9048W
Find the maximum output current:
1.9048W
= 476mA ⇒ IOUT(MAX) = 50mA
9V − 5V
45
50
45
TA = +70°C
40
35
TA = +85°C
30
TA = +125°C
25
20
15
10
5
MAX15006 fig05b
50
IOUT(MAX) (mA)
60
55
MAX15006 fig05a
60
55
IOUT(MAX) (mA)
IOUT(MAX) =
TA = +70°C
40
35
TA = +85°C
30
25
20
TA = +125°C
15
10
VOUT = 5V
6-PIN TDFN
VOUT = 5V
8-PIN SO-EP
5
0
0
0
5
10
15
20
25
30
35
40
VIN (V)
Figure 6a. Calculated Maximum Output Current vs. Input
Voltage (6-Pin TDFN-EP)
0
5
10
15
20
25
30
35
40
VIN (V)
Figure 6b. Calculated Maximum Output Current vs. Input
Voltage (8-Pin SO-EP)
______________________________________________________________________________________
11
MAX15006/MAX15007
Example 2 (TDFN Package):
TA = +85°C
VIN = 14V
VOUT = 5V
Calculate the maximum allowable package dissipation
at the given temperature as follows:
40V, Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
MAX15006/MAX15007
Selector Guide
PART
ENABLE INPUT
FIXED OUTPUT
VOLTAGE (V)
ADJUSTABLE OUTPUT
VOLTAGE (V)
PIN-PACKAGE
MAX15006AASA+
—
3.3
—
8 SO-EP
6 TDFN-EP
MAX15006AATT+
—
3.3
—
MAX15006BASA+
—
5
—
8 SO-EP
MAX15006BATT+
—
5
—
6 TDFN-EP
MAX15006CASA+
—
—
ADJ (1.8 to 10)
8 SO-EP
MAX15006CATT+
—
—
ADJ (1.8 to 10)
6 TDFN-EP
MAX15007AASA+
√
3.3
—
8 SO-EP
6 TDFN-EP
MAX15007AATT+
√
3.3
—
MAX15007BASA+
√
5
—
8 SO-EP
MAX15007BATT+
√
5
—
6 TDFN-EP
MAX15007CASA+
√
—
ADJ (1.8 to 10)
8 SO-EP
MAX15007CATT+
√
—
ADJ (1.8 to 10)
6 TDFN-EP
Pin Configurations (continued)
TOP VIEW
OUT OUT (FB)
6
5
4
MAX15007A
MAX15007B
MAX15007C
*EP
+
1
2
3
IN
IN
EN
TDFN
12
MAX15007A
MAX15007B
MAX15007C
GND
IN
1
N.C.
EN
+
8
OUT
2
7
N.C. (FB)
3
6
N.C.
5
GND
N.C. 4
*EP
SO
*EXPOSED PAD
( ) FOR MAX15007C ONLY.
______________________________________________________________________________________
40V, Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
PART
TEMP RANGE
PINPACKAGE
MAX15006CASA+* -40°C to +125°C 8 SO-EP**
TOP
MARK
API
-40°C to +125°C 6 TDFN-EP**
-40°C to +125°C 8 SO-EP**
APG
-40°C to +125°C 6 TDFN-EP**
MAX15007CASA+* -40°C to +125°C 8 SO-EP**
MAX15007CATT+ -40°C to +125°C 6 TDFN-EP**
APH
MAX15007AASA+
MAX15007AATT+
MAX15007BASA+
MAX15007BATT+
PROCESS: BiCMOS
—
-40°C to +125°C 6 TDFN-EP**
-40°C to +125°C 8 SO-EP**
MAX15006CATT+
Chip Information
Package Information
—
—
—
APJ
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages.
PACKAGE TYPE
PACKAGE CODE
DOCUMENT NO.
6 TDFN
T633-2
21-0137
8 SO-EP
S8E-12
21-0111
+Denotes a lead-free/RoHS-compliant package.
*Future product—contact factory for availability.
**EP = Exposed pad.
______________________________________________________________________________________
13
MAX15006/MAX15007
Ordering Information (continued)
MAX15006/MAX15007
40V, Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
Revision History
REVISION
NUMBER
REVISION
DATE
0
10/06
Initial release
1
5/08
Added MAX15006C/MAX15007C adjustable version to data sheet including
Ordering Information, Electrical Characteristics, Pin Description, and
Detailed Description.
DESCRIPTION
PAGES
CHANGED
—
1–14
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2008 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement