General Description
The MAX6125/MAX6141/MAX6145/MAX6150/MAX6160
low-dropout, micropower, three-terminal voltage references
offer 2.5V, 4.096V, 4.5V, 5.0V, and adjustable (1.23V to
12.4V) output voltages, respectively. Low, 200mV dropout
makes these devices ideal for 3V and 5V systems. Unlike
two-terminal references that waste battery current and
require an external resistor, the MAX61xx family’s supply
current is virtually independent of input voltage variations,
which translates to longer battery life.
Initial accuracy for these devices is ±1%. The output tem-
perature coefficient is typically 15ppm/°C, and guaranteed
to be less than 50ppm/°C (except for the MAX6160). The
MAX6125/MAX6141/MAX6145/MAX6150 are available in
3-pin SOT23 and 8-pin SO packages. The MAX6160 is
available in 4-pin SOT143 and 8-pin SO packages.
Features
3-Pin SOT23 Package
(MAX6125/MAX6141/MAX6145/MAX6150)
4-Pin SOT143 Package (MAX6160)
Low, 200mV Dropout Voltage
75μA Supply Current, Independent of Input Voltage
15ppm/°C Typical Tempco (50ppm/°C, max)
Stable for All Capacitive Loads up to 10nF
Adjustable Output Voltage from 1.23V
to (VIN - 0.2V) (MAX6160)
Optimized for 3V/5V Operation
Applications
3V/5V Systems
Battery-Powered Systems
Portable and Hand-Held Equipment
Data-Acquisition Systems
Instrumentation and Process Control
19-1177; Rev. 2; 8/16
Ordering Information appears at end of data sheet.Typical Operating Circuit appears on last page.
PART PRESET OUTPUT
VOLTAGE (V)
PIN-
PACKAGE
MAX6125 2.5 3 SOT23/8 SO
MAX6141 4.096 3 SOT23/8 SO
MAX6145 4.5 3 SOT23/8 SO
MAX6150 53 SOT23/8 SO
MAX6160 Adjustable
(1.23 to 12.40) 4 SOT143/8 SO
PART TEMP
RANGE
PIN-
PACKAGE
TOP
MARK
MAX6125ESA -40°C to +85°C 8 SO
MAX6125EUR-T -40°C to +85°C 3 SOT23-3 EBAA
MAX6141ESA -40°C to +85°C 8 SO
MAX6141EUR-T -40°C to +85°C 3 SOT23-3 ECAA
1
2
8
7
IN
N.C.
N.C.
N.C. (ADJ)
OUT
N.C.
N.C.
GND
MAX6125
MAX6141
MAX6145
MAX6150
MAX6160
SO
TOP VIEW
3
4
6
5
( ) ARE FOR MAX6160 ONLY
1
2
3GND
OUT
IN
MAX6125
MAX6141
MAX6145
MAX6150
SOT23-3
1
2
4
3
OUT
IN
ADJ
GND
MAX6160
SOT143-4
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
Pin Congurations
Selector Guide
Ordering Information
(Voltages With Respect to GND)
IN ....................................................................-0.3V to +13.5V
OUT, ADJ ................................................-0.3V to (VIN + 0.3V)
Output Short-Circuit Duration (to IN or GND) ...........Continuous
Continuous Power Dissipation (TA = +70°C)
8-Pin SO (derate 5.9mW/°C above +70°C) ................. 471mW
3-Pin SOT23 (derate 4mW/°C above +70°C) .............320mW
4-Pin SOT143 (derate 4mW/°C above +70°C) ...........320mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
(VIN = 2.7V, IOUT = 0mA, TA = +25°C, unless otherwise noted.) (Note 1)
(VIN = 4.3V, IOUT = 0mA, TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage VIN TA = TMIN to TMAX 2.7 12.6 V
Output Voltage VOUT
TA = +25°C 2.475 2.500 2.525 V
TA = TMIN to TMAX 2.450 2.550
Output Voltage
Temperature Coefcient TCVOUT TA = TMIN to TMAX 15 50 ppm/°C
Output Voltage Noise en
0.1Hz to 10Hz 15 µVP-P
10Hz to 10kHz 500
Line Regulation ∆VOUT/∆VIN VIN = 2.7V to 12.6V, TA = TMIN to TMAX 1 50 µV/V
Load Regulation ∆VOUT/∆IOUT
ISOURCE = 0mA to 1mA 0.4 1 mV/mA
ISINK = 0mA to 1mA 1.15 10
Quiescent Supply Current IQ
TA = +25°C 75 100 µA
TA = TMIN to TMAX 130
Change in Supply Current
vs. Change in Input Voltage ∆IQ/∆VIN VIN = 2.7V to 12.6V 1.7 6 µA/V
PARAMETER SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Supply Voltage VIN TA = TMIN to TMAX 4.3 12.6 V
Output Voltage VOUT
TA = +25°C 4.055 4.096 4.140 V
TA = TMIN to TMAX 4.015 4.180
Output Voltage
Temperature Coefcient TCVOUT TA = TMIN to TMAX 15 50 ppm/°C
Output Voltage Noise en
0.1Hz to 10Hz 25 µVP-P
10Hz to 10kHz 700
Line Regulation ∆VOUT/∆VIN VIN = 4.3V to 12.6V, TA = TMIN to TMAX 2 50 µV/V
Load Regulation ∆VOUT/∆IOUT
ISOURCE = 0mA to 1mA 0.55 1.6 mV/mA
ISINK = 0mA to 1mA 1.65 16
Quiescent Supply Current IQ
TA = +25°C 78 105 µA
TA = TMIN to TMAX 130
Change in Supply Current
vs. Change in Input Voltage ∆IQ/∆VIN VIN = 4.3V to 12.6V 1.7 6 µA/V
Thermal Hysteresis 80 ppm
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
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2
Absolute Maximum Ratings
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—MAX6125
Electrical Characteristics—MAX6141
(VIN = 4.7V, IOUT = 0mA, TA = +25°C, unless otherwise noted.) (Note 1)
(VIN = 5.2V, IOUT = 0mA, TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage VIN TA = TMIN to TMAX 4.7
12.6
V
Output Voltage VOUT
TA = +25°C 4.455 4.500
4.545
V
TA = TMIN to TMAX 4.410
4.590
Output Voltage
Temperature Coefcient TCVOUT TA = TMIN to TMAX 15
50
ppm/°C
Output Voltage Noise en
0.1Hz to 10Hz
30
µVP-P
10Hz to 10kHz
800
Line Regulation ∆VOUT/∆VIN VIN = 4.7V to 12.6V, TA = TMIN to TMAX 2 50 µV/V
Load Regulation ∆VOUT/∆IOUT
ISOURCE = 0mA to 1mA 0.6
1.8
mV/mA
ISINK = 0mA to 1mA 1.75 18
Quiescent Supply Current IQ
TA = +25°C 79
105
µA
TA = TMIN to TMAX
130
Change in Supply Current
vs. Change in Input Voltage ∆IQ/∆VIN VIN = 4.7V to 12.6V 1.7
6
µA/V
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage VIN TA = TMIN to TMAX 5.2
12.6
V
Output Voltage VOUT
TA = +25°C 4.950 5.000 5.050 V
TA = TMIN to TMAX 4.900
5.100
Output Voltage
Temperature Coefcient TCVOUT TA = TMIN to TMAX 15
50
ppm/°C
Output Voltage Noise en
0.1Hz to 10Hz
35
µVP-P
10Hz to 10kHz
900
Line Regulation ∆VOUT/∆VIN VIN = 5.2V to 12.6V, TA = TMIN to TMAX 1 50 µV/V
Load Regulation ∆VOUT/∆IOUT
ISOURCE = 0mA to 1mA 0.65 2 mV/mA
ISINK = 0mA to 1mA 1.9 20
Quiescent Supply Current IQ
TA = +25°C 80
110
µA
TA = TMIN to TMAX
145
Change in Supply Current
vs. Change in Input Voltage ∆IQ/∆VIN VIN = 5.2V to 12.6V 1.7 6 µA/V
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
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Electrical Characteristics—MAX6145
Electrical Characteristics—MAX6150
(VIN = 2.7V; IOUT = 0mA; R1 = 215kΩ ±0.1%, R2 = 208kΩ ±0.1% (circuit of Figure 1); TA = +25°C; unless otherwise noted.) (Notes 1, 2)
Note 1: All devices are 100% production tested at TA = +25°C, and are guaranteed by design for TA = TMIN to TMAX as specified.
Note 2:
R1 and R2 program the output voltage in the 1.23V to (VIN - 0.2V) range (see the Setting the MAX6160 Output Voltage section).
(VIN = VIN(MIN), IOUT = 0mA, TA = +25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage VIN TA = TMIN to TMAX 2.7 12.6 V
Output Voltage Range TA = TMIN to TMAX 1.23 VIN - 0.2 V
Output Voltage VOUT
TA = +25°C 2.475 2.500 2.525
V
TA = TMIN to TMAX 2.450 2.550
ADJ Feedback Voltage
Threshold VADJ 1.23 V
ADJ Input Current IADJ VADJ = 1.23V 70 nA
Output Voltage
Temperature Coefcient TCVOUT TA = TMIN to TMAX 15 100 ppm/°C
Output Voltage Noise en
0.1Hz to 10Hz 15 µVP-P
10Hz to 10kHz 500
Line Regulation ∆VOUT/∆VIN VIN = 2.7V to 12.6V, TA = TMIN to TMAX 1 50 µV/V
Load Regulation ∆VOUT/∆IOUT
ISOURCE = 0mA to 1mA 0.35 1 mV/mA
ISINK = 0mA to 1mA 1.15 10
Quiescent Supply Current IQ
TA = +25°C 75 100 µA
TA = TMIN to TMAX 130
Change in Supply Current
vs. Change in Input Voltage ∆IQ/∆VIN VIN = 2.7V to 12.6V 1.7 6 µA/V
40
2
SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX6125 toc01
INPUT VOLTAGE ( V)
SUPPLY CURRENT (µA)
50
60
70
80
90
100
4 6 8 10 12 14
VALID OVER VIN(MIN) TO VIN(MAX)
FOR EACH PART
110
-50
SUPPLY CURRENT
vs. TEMPERATURE
MAX6125 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
10
20
30
40
50
70
60
80
90
100
-25 0 25 50 75 100
VIN = 10V
VIN = 3V
VIN = 5V
0
-50
LOAD REGULATION (SOURCING)
vs. TEMPERATURE
MAX6125-TOC03
TEMPERATURE (°C)
LOAD REGULATION (mV/mA)
0.2
0.4
0.6
0.8
1.0
-25 0 25 50 75 100
VOUT = 5.0V (MAX6150)
VOUT = 4.096V (MAX6141)
VOUT = 2.5V (MAX6125/MAX6160)
VOUT = 4.5V (MAX6145)
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
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Electrical Characteristics—MAX6160
Typical Operating Characteristics
(VIN = VIN(MIN), IOUT = 0mA, TA = +25°C, unless otherwise noted.)
0
-50
LOAD REGULATION (SINKING)
vs. TEMPERATURE
MAX6125 toc04
TEMPERATURE (°C)
LOAD REGULATION (mV/mA)
0.5
1.0
1.5
2.0
2.5
-25 0 25 50 75 100
VOUT = 5.0V (MAX6150)
VOUT = 4.096V (MAX6141)
VOUT = 2.5V (MAX6125/MAX6160)
VOUT = 4.5V (MAX6145)
0
0.0
DROPOUT VOLTAGE
vs. SOURCE CURRENT
MAX6125 toc09
SOURCE CURRENT (mA)
DROPOUT VOLTAGE (mV)
50
100
150
200
250
300
350
400
0.5 1.0 1.5 2.52.0 3.53.0 4.0
4.496
0
MAX6145
OUTPUT VOLTAGE vs. SOURCE CURRENT
MAX6125 toc07
SOURCE CURRENT (mA)
OUTPUT VOLTAGE (V)
4.499
4.498
4.497
4.500
4.501
0.5 1.0 1.5 2.0 2.5
2.496
0
MAX6125/MAX6160
OUTPUT VOLTAGE vs. SOURCE CURRENT
MAX6125 toc05
SOURCE CURRENT (mA)
OUTPUT VOLTAGE (V)
2.497
2.498
2.499
2.500
2.501
0.5 1.0 1.5 2.0
2.5
70
-50
MAX6125/MAX6160
DROPOUT VOLTAGE vs. TEMPERATURE
MAX6125 toc10
TEMPERATURE (°C)
DROPOUT VOLTAGE (mV)
100
90
80
110
IOUT = 1mA
120
-25 0 25 50 75 100
4.996
0
MAX6150
OUTPUT VOLTAGE vs. SOURCE CURRENT
MAX6125 toc08
SOURCE CURRENT (mA)
OUTPUT VOLTAGE (V)
4.999
4.998
4.997
5.000
5.001
0.5 1.0 1.5 2.0 2.5
4.092
0
MAX6141
OUTPUT VOLTAGE vs. SOURCE CURRENT
MAX6125 toc06
SOURCE CURRENT (mA)
OUTPUT VOLTAGE (V)
4.093
4.094
4.095
4.096
4.097
0.5 1.0 1.5 2.0
2.5
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MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
Typical Operating Characteristics (continued)
(VIN = VIN(MIN), IOUT = 0mA, TA = +25°C, unless otherwise noted.)
0
0.0001
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX6125 toc15
FREQUENCY (kHz)
PSRR (dB)
20
40
60
80
120
100
140
0.001 0.01 0.1 1 10
-1.0
2
CHANGE IN OUTPUT VOLTAGE
vs. INPUT VOLTAGE
MAX6125 toc13
INPUT VOLTAGE (V)
*With respect to output voltage at VIN = VIN(MIN).
CHANGE IN OUTPUT VOLTAGE* (%)
-0.5
0
0.5
1.0
4 6 8 10 12 14
VALID OVER VIN(MIN) TO VIN(MAX)
FOR EACH PART
80
-50
MAX6141/MAX6145/MAX6150
DROPOUT VOLTAGE vs. TEMPERATURE
MAX6125 toc11
TEMPERATURE (°C)
DROPOUT VOLTAGE (mV)
84
88
92
96
100
-25 0 25 50 75 100
IOUT = 1mA
-200
-160
-120
-80
-40
0
40
80
120
160
200
123456
THERMAL HYSTERESIS (ppm)
TEMPERATURE CYCLES
MAX6141ESA THERMAL HYSTERESIS
(5 PARTS, 6 TEMPERATURE CYCLES)
VIN = 4.3V, VOUT = 4.096V,
COUT = NO LOAD
IC1
IC5
IC4
IC3
IC2
-0.3
-50
CHANGE IN OUTPUT VOLTAGE
vs. TEMPERATURE
MAX6125 toc14
TEMPERATURE (°C)
CHANGE IN OUTPUT VOLTAGE** (%)
-0.2
-0.1
0
0.1
0.2
-25 0 25 50 75 100
**With respect to output voltage at TA = +25°C.
0
-50
MAX6160
ADJ INPUT CURRENT vs. TEMPERATURE
MAX6125 toc12
TEMPERATURE (°C)
ADJ INPUT CURRENT (nA)
20
40
60
80
100
120
-25 0 25 50 75 100
VIN = 2.7V
VADJ = 1.23V
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6
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MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
Typical Operating Characteristics (continued)
(VIN = VIN(MIN), IOUT = 0mA, TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
10µs/div
A = OUTPUT CURRENT, 1mA/div, IOUT = 0mA to -1mA
B = OUTPUT VOLTAGE, 200mV/div
MAX6125
LOAD-TRANSIENT RESPONSE (SINKING)
A
B
5µs/div
A = INPUT VOLTAGE, 100mV/div, VIN = 3V ±50mV
B = OUTPUT VOLTAGE, 20mV/div
MAX6125
LINE-TRANSIENT RESPONSE
A
B
0V
0V
10µs/div
A = OUTPUT CURRENT, 1mA/div, IOUT = 0mA to 1mA
B = OUTPUT VOLTAGE, 50mV/div
MAX6125
LOAD-TRANSIENT RESPONSE (SOURCING)
A
B
1s/div
MAX6125
0.1Hz TO 100Hz NOISE
50µV/div
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
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7
Applications Information
Setting the MAX6160 Output Voltage
Set the output voltage on the MAX6160 by connecting a
resistor divider between OUT, ADJ, and GND (Figure 1).
Choose R1 according to the following equation:
R1 = (1.06 x 105) (VOUT / VADJ) Ω
where VTH = 1.23V. The scaling factor (1.06 x 105)
compensates for the MAX6160’s change in ADJ input
current over temperature. When R1 is chosen correctly,
the change in voltage across R1 caused by the ADJ input
current is properly cancelled. Choose R1 to within
±5% of this calculated value (nearest standard value plus
specified resistor tolerance) to optimize the output voltage
temperature coefficient. Using R1 = 215kΩ:
215k
R2 208k
2.5V 1
1.23V
= ≈Ω



which is also the nearest 0.1% resistor value.
Choose R2 according to the following equation:
R2 = R1 / (VOUT / VADJ - 1)
For example, a 2.5V output requires R1 = (1.06 x 105)
(2.5V / 1.23V) 215kΩ, which is the nearest standard-
value 0.1% resistor.
Input Bypassing
For the best line-transient performance, decouple the
input with a 0.1μF ceramic capacitor, as shown in the
Typical Operating Circuit. Locate the capacitor as close to
the device pin as possible. Where transient performance
is less important, no capacitor is necessary.
Output Bypassing
The MAX6125/MAX6141/MAX6145/MAX6150/MAX6160
do not require an output capacitor. They are stable for
capacitive loads from 0nF to 10nF. If your application
requires an output charge reservoir (e.g., to decouple
the reference from a DAC’s input), then make sure that
the total output capacitive load does not exceed 10nF for
optimum settling-time performance.
Figure 1. MAX6160 Adjustable Output Circuit
*Except MAX6160.
**MAX6160 only.
PIN NAME FUNCTION
SO SOT23-3 SOT143
1 2 4 OUT Reference Output
2, 3, 5*, 6, 7 N.C. No Connection. Not internally connected.
4 3 1 GND Ground
5** 2 ADJ Adjustable output voltage feedback input. Connect a resistor divider
between OUT, ADJ, and GND (Figure 1).
8 1 3 IN Input Voltage
MAX6160
OUT
ADJ
GND
IN
R1 = 1.06 x 105
(
)
VOUT
VADJ
R2 =
VOUT
VADJ
(
- 1
)
R1
VADJ = 1.23V
VOUT
VIN
R1
R2
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
www.maximintegrated.com Maxim Integrated
8
Pin Description
PART TEMP
RANGE
PIN-
PACKAGE
TOP
MARK
MAX6145ESA -40°C to +85°C 8 SO
MAX6145EUR-T -40°C to +85°C 3 SOT23-3 EDAA
MAX6150ESA -40°C to +85°C 8 SO
MAX6150EUR-T -40°C to +85°C 3 SOT23-3 EEAA
MAX6160ESA -40°C to +85°C 8 SO
MAX6160EUS-T -40°C to +85°C 4 SOT143-4 JXAA
MAX6125
MAX6141
MAX6145
MAX6150
IN
VIN = (VOUT + 200mV) TO 12.6V
OUT
0.1µF*
*OPTIONAL
GND
VOUT
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
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9
Ordering Information (continued) Typical Operating Circuit
Chip Information
TRANSISTOR COUNT: 42
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
www.maximintegrated.com Maxim Integrated
10
Package Information
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
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11
Package Information (continued)
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
2 8/16 Added new row to Electrical Characteristics table for Thermal Hysteresis spec
and added TOC 16 to Typical Operating Characteristics 2, 6
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2016 Maxim Integrated Products, Inc.
12
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
Revision History
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