MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
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 temperature 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.
Selector Guide
PART
PRESET OUTPUT
VOLTAGE (V)
PINPACKAGE
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
Ordering Information
MAX6125
2.5
3 SOT23/8 SO
MAX6141
4.096
3 SOT23/8 SO
MAX6145
4.5
3 SOT23/8 SO
MAX6125ESA
-40°C to +85°C
8 SO
MAX6150
5
3 SOT23/8 SO
MAX6125EUR-T
-40°C to +85°C
3 SOT23-3
MAX6160
Adjustable
(1.23 to 12.40)
MAX6141ESA
-40°C to +85°C
8 SO
MAX6141EUR-T
-40°C to +85°C
3 SOT23-3
PART
4 SOT143/8 SO
Typical Operating Circuit appears on last page.
TEMP
RANGE
PINPACKAGE
—
Ordering Information appears at end of data sheet.
TOP VIEW
N.C. 2
N.C. 3
GND 4
MAX6125
MAX6141
MAX6145
MAX6150
MAX6160
SO
( ) ARE FOR MAX6160 ONLY
19-1177; Rev. 2; 8/16
8
IN
7
N.C.
6
N.C.
5
N.C. (ADJ)
IN 1
OUT 2
MAX6125
MAX6141
MAX6145
MAX6150
SOT23-3
GND 1
4
OUT
3
IN
MAX6160
3 GND
ADJ
2
SOT143-4
EBAA
—
Pin Configurations
OUT 1
TOP
MARK
ECAA
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
Absolute Maximum Ratings
(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
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
(VIN = 2.7V, IOUT = 0mA, TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
Supply Voltage
Output Voltage
Output Voltage
Temperature Coefficient
Output Voltage Noise
Line Regulation
Load Regulation
SYMBOL
VIN
VOUT
TCVOUT
en
∆VOUT/∆VIN
∆VOUT/∆IOUT
Quiescent Supply Current
IQ
Change in Supply Current
vs. Change in Input Voltage
∆IQ/∆VIN
CONDITIONS
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
MIN
TYP
MAX
UNITS
12.6
V
2.500
2.525
2.7
2.475
2.450
TA = TMIN to TMAX
2.550
15
0.1Hz to 10Hz
15
10Hz to 10kHz
500
VIN = 2.7V to 12.6V, TA = TMIN to TMAX
50
V
ppm/°C
µVP-P
1
50
0.4
1
1.15
10
TA = +25°C
75
100
VIN = 2.7V to 12.6V
1.7
6
µA/V
TYP
MAX
UNITS
12.6
V
ISOURCE = 0mA to 1mA
ISINK = 0mA to 1mA
TA = TMIN to TMAX
130
µV/V
mV/mA
µA
Electrical Characteristics—MAX6141
(VIN = 4.3V, IOUT = 0mA, TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
Supply Voltage
VIN
Output Voltage
VOUT
Output Voltage
Temperature Coefficient
Output Voltage Noise
Line Regulation
Load Regulation
TCVOUT
en
∆VOUT/∆VIN
∆VOUT/∆IOUT
Quiescent Supply Current
IQ
Change in Supply Current
vs. Change in Input Voltage
∆IQ/∆VIN
Thermal Hysteresis
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CONDITIONS
TA = TMIN to TMAX
MIN
4.3
TA = +25°C
4.055
TA = TMIN to TMAX
4.015
4.096
4.180
TA = TMIN to TMAX
15
0.1Hz to 10Hz
25
10Hz to 10kHz
700
VIN = 4.3V to 12.6V, TA = TMIN to TMAX
4.140
50
2
50
0.55
1.6
ISINK = 0mA to 1mA
1.65
16
78
105
TA = TMIN to TMAX
VIN = 4.3V to 12.6V
130
1.7
80
ppm/°C
µVP-P
ISOURCE = 0mA to 1mA
TA = +25°C
V
6
µV/V
mV/mA
µA
µA/V
ppm
Maxim Integrated │ 2
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
Electrical Characteristics—MAX6145
(VIN = 4.7V, IOUT = 0mA, TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
Supply Voltage
VIN
Output Voltage
VOUT
Output Voltage
Temperature Coefficient
Output Voltage Noise
Line Regulation
Load Regulation
Quiescent Supply Current
Change in Supply Current
vs. Change in Input Voltage
TCVOUT
en
∆VOUT/∆VIN
∆VOUT/∆IOUT
IQ
∆IQ/∆VIN
CONDITIONS
TA = TMIN to TMAX
MIN
TYP
4.7
TA = +25°C
4.455
TA = TMIN to TMAX
4.410
4.500
UNITS
12.6
V
4.545
4.590
TA = TMIN to TMAX
15
0.1Hz to 10Hz
30
10Hz to 10kHz
800
VIN = 4.7V to 12.6V, TA = TMIN to TMAX
MAX
50
2
50
0.6
1.8
ISINK = 0mA to 1mA
1.75
18
79
105
TA = TMIN to TMAX
130
VIN = 4.7V to 12.6V
ppm/°C
µVP-P
ISOURCE = 0mA to 1mA
TA = +25°C
V
µV/V
mV/mA
µA
1.7
6
µA/V
TYP
MAX
UNITS
12.6
V
Electrical Characteristics—MAX6150
(VIN = 5.2V, IOUT = 0mA, TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
Supply Voltage
VIN
Output Voltage
VOUT
Output Voltage
Temperature Coefficient
Output Voltage Noise
TCVOUT
en
Line Regulation
∆VOUT/∆VIN
Load Regulation
∆VOUT/∆IOUT
Quiescent Supply Current
IQ
Change in Supply Current
vs. Change in Input Voltage
∆IQ/∆VIN
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CONDITIONS
TA = TMIN to TMAX
MIN
5.2
TA = +25°C
4.950
TA = TMIN to TMAX
4.900
TA = TMIN to TMAX
5.000
5.100
15
0.1Hz to 10Hz
35
10Hz to 10kHz
900
VIN = 5.2V to 12.6V, TA = TMIN to TMAX
5.050
1
50
50
ISOURCE = 0mA to 1mA
0.65
2
1.9
20
TA = +25°C
80
VIN = 5.2V to 12.6V
110
145
1.7
ppm/°C
µVP-P
ISINK = 0mA to 1mA
TA = TMIN to TMAX
V
6
µV/V
mV/mA
µA
µA/V
Maxim Integrated │ 3
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
Electrical Characteristics—MAX6160
(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)
PARAMETER
SYMBOL
Supply Voltage
CONDITIONS
VIN
Output Voltage Range
Output Voltage
VOUT
ADJ Feedback Voltage
Threshold
VADJ
ADJ Input Current
IADJ
Output Voltage
Temperature Coefficient
TCVOUT
Output Voltage Noise
en
Line Regulation
∆VOUT/∆VIN
Load Regulation
∆VOUT/∆IOUT
Quiescent Supply Current
TYP
MAX
UNITS
12.6
V
VIN - 0.2
V
2.7
TA = TMIN to TMAX
1.23
TA = +25°C
2.475
TA = TMIN to TMAX
2.450
2.500
2.525
1.23
V
VADJ = 1.23V
70
nA
TA = TMIN to TMAX
15
0.1Hz to 10Hz
15
10Hz to 10kHz
500
VIN = 2.7V to 12.6V, TA = TMIN to TMAX
100
ppm/°C
µVP-P
1
50
µV/V
ISOURCE = 0mA to 1mA
0.35
1
ISINK = 0mA to 1mA
1.15
10
75
100
TA = TMIN to TMAX
∆IQ/∆VIN
V
2.550
TA = +25°C
IQ
Change in Supply Current
vs. Change in Input Voltage
MIN
TA = TMIN to TMAX
mV/mA
µA
130
VIN = 2.7V to 12.6V
1.7
6
µA/V
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).
Typical Operating Characteristics
(VIN = VIN(MIN), IOUT = 0mA, TA = +25°C, unless otherwise noted.)
80
70
60
VIN = 10V
90
80
70
VIN = 3V
60
VIN = 5V
50
40
30
50
VALID OVER VIN(MIN) TO VIN(MAX)
FOR EACH PART
40
2
4
6
8
10
INPUT VOLTAGE ( V)
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1.0
LOAD REGULATION (mV/mA)
SUPPLY CURRENT (µA)
90
100
MAX6125 toc02
110
MAX6125 toc01
100
SUPPLY CURRENT (µA)
LOAD REGULATION (SOURCING)
vs. TEMPERATURE
SUPPLY CURRENT
vs. TEMPERATURE
VOUT = 4.5V (MAX6145)
0.8
VOUT = 5.0V (MAX6150)
0.6
0.4
VOUT = 4.096V (MAX6141)
0.2
VOUT = 2.5V (MAX6125/MAX6160)
20
12
14
10
-50
-25
0
25
50
TEMPERATURE (°C)
75
100
MAX6125-TOC03
SUPPLY CURRENT
vs. INPUT VOLTAGE
0
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
Maxim Integrated │ 4
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.)
1.5
1.0
VOUT = 4.096V (MAX6141)
MAX6125 toc05
4.097
2.500
4.096
OUTPUT VOLTAGE (V)
VOUT = 5.0V (MAX6150)
2.0
2.501
MAX6125 toc04
VOUT = 4.5V (MAX6145)
OUTPUT VOLTAGE (V)
LOAD REGULATION (mV/mA)
2.5
MAX6141
OUTPUT VOLTAGE vs. SOURCE CURRENT
MAX6125/MAX6160
OUTPUT VOLTAGE vs. SOURCE CURRENT
2.499
2.498
4.095
4.094
4.093
2.497
0.5
MAX6125 toc06
LOAD REGULATION (SINKING)
vs. TEMPERATURE
VOUT = 2.5V (MAX6125/MAX6160)
4.092
2.496
0
25
50
75
100
0
TEMPERATURE (°C)
0.5
1.0
1.5
2.0
5.001
2.5
4.999
4.998
4.997
4.497
0
0.5
1.0
1.5
2.0
4.996
2.5
0
0.5
120
MAX6125 toc09
400
DROPOUT VOLTAGE (mV)
350
300
250
200
150
100
50
0
1.0
1.5
2.0
2.5
3.0
SOURCE CURRENT (mA)
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1.5
2.0
2.5
MAX6125/MAX6160
DROPOUT VOLTAGE vs. TEMPERATURE
DROPOUT VOLTAGE
vs. SOURCE CURRENT
0.5
1.0
SOURCE CURRENT (mA)
SOURCE CURRENT (mA)
DROPOUT VOLTAGE (mV)
2.0
5.000
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
4.498
1.5
MAX6150
OUTPUT VOLTAGE vs. SOURCE CURRENT
4.500
4.499
1.0
SOURCE CURRENT (mA)
MAX6125 toc07
4.501
0.0
0.5
SOURCE CURRENT (mA)
MAX6145
OUTPUT VOLTAGE vs. SOURCE CURRENT
4.496
0
2.5
MAX6125 toc08
-25
-50
3.5
4.0
MAX6125 toc10
0
IOUT = 1mA
110
100
90
80
70
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
Maxim Integrated │ 5
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.)
96
92
88
84
80
120
MAX6125 toc11
IOUT = 1mA
VIN = 2.7V
VADJ = 1.23V
100
ADJ INPUT CURRENT (nA)
DROPOUT VOLTAGE (mV)
100
MAX6160
ADJ INPUT CURRENT vs. TEMPERATURE
80
60
40
20
0
-50
-25
0
25
50
75
-50
100
-25
TEMPERATURE (°C)
25
50
75
100
CHANGE IN OUTPUT VOLTAGE
vs. TEMPERATURE
0.5
0
-0.5
0.2
MAX6125 toc14
VALID OVER VIN(MIN) TO VIN(MAX)
FOR EACH PART
CHANGE IN OUTPUT VOLTAGE** (%)
MAX6125 toc13
CHANGE IN OUTPUT VOLTAGE* (%)
1.0
0
TEMPERATURE (°C)
CHANGE IN OUTPUT VOLTAGE
vs. INPUT VOLTAGE
0.1
0
-0.1
-0.2
-0.3
-1.0
4
2
6
8
10
12
-50
14
-25
*With respect to output voltage at VIN = VIN(MIN).
200
100
80
60
40
20
120
0.1
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100
IC4
IC2
80
40
0
-40
-80
IC3
-120
1
10
-200
IC5
IC1
-160
0.01
75
VIN = 4.3V, VOUT = 4.096V,
COUT = NO LOAD
160
THERMAL HYSTERESIS (ppm)
120
FREQUENCY (kHz)
50
MAX6141ESA THERMAL HYSTERESIS
(5 PARTS, 6 TEMPERATURE CYCLES)
MAX6125 toc15
140
0.001
25
**With respect to output voltage at TA = +25°C.
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
0
0.0001
0
TEMPERATURE (°C)
INPUT VOLTAGE (V)
PSRR (dB)
MAX6125 toc12
MAX6141/MAX6145/MAX6150
DROPOUT VOLTAGE vs. TEMPERATURE
1
2
3
4
TEMPERATURE CYCLES
5
6
Maxim Integrated │ 6
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.)
MAX6125
LOAD-TRANSIENT RESPONSE (SOURCING)
MAX6125
LOAD-TRANSIENT RESPONSE (SINKING)
A
A
B
B
10µs/div
10µs/div
A = OUTPUT CURRENT, 1mA/div, IOUT = 0mA to 1mA
B = OUTPUT VOLTAGE, 50mV/div
A = OUTPUT CURRENT, 1mA/div, IOUT = 0mA to -1mA
B = OUTPUT VOLTAGE, 200mV/div
MAX6125
LINE-TRANSIENT RESPONSE
MAX6125
0.1Hz TO 100Hz NOISE
A
0V
50µV/div
0V
B
5µs/div
1s/div
A = INPUT VOLTAGE, 100mV/div, VIN = 3V ±50mV
B = OUTPUT VOLTAGE, 20mV/div
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Maxim Integrated │ 7
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
Pin Description
PIN
NAME
FUNCTION
SO
SOT23-3
SOT143
1
2
4
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
OUT
Reference Output
Input Voltage
*Except MAX6160.
**MAX6160 only.
±5% of this calculated value (nearest standard value plus
specified resistor tolerance) to optimize the output voltage
temperature coefficient. Using R1 = 215kΩ:
VIN
IN
VOUT
OUT
MAX6160
R1
ADJ
GND
=
R2
R1 = 1.06 x 105
R2 =
(
R2
R1
VOUT
-1
VADJ
( VV ) Ω
OUT
ADJ
)
VADJ = 1.23V
Figure 1. MAX6160 Adjustable Output Circuit
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
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215kΩ
≈ 208kΩ
2.5V
−
1
1.23V
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 standardvalue 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.
Maxim Integrated │ 8
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
Ordering Information (continued)
PART
TEMP
RANGE
PINPACKAGE
MAX6145ESA
-40°C to +85°C
8 SO
MAX6145EUR-T
-40°C to +85°C
3 SOT23-3
MAX6150ESA
-40°C to +85°C
8 SO
MAX6150EUR-T
-40°C to +85°C
3 SOT23-3
MAX6160ESA
-40°C to +85°C
8 SO
MAX6160EUS-T
-40°C to +85°C
4 SOT143-4
Typical Operating Circuit
TOP
MARK
VIN = (VOUT + 200mV) TO 12.6V
—
EDAA
IN
—
EEAA
—
JXAA
0.1µF*
MAX6125
MAX6141
MAX6145
MAX6150
OUT
VOUT
GND
Chip Information
TRANSISTOR COUNT: 42
*OPTIONAL
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Maxim Integrated │ 9
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
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.
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Maxim Integrated │ 10
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
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.
www.maximintegrated.com
Maxim Integrated │ 11
MAX6125/MAX6141/
MAX6145/MAX6150/MAX6160
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
Revision History
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
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
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 specifications 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.
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