19-1177; Rev. 1; 10/02
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
General Description
The MAX6125/MAX6141/MAX6145/MAX6150/MAX6160
low-dropout, micropower, three-terminal voltage refer-
ences 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.
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 (V
IN
- 0.2V) (MAX6160)
♦
Optimized for 3V/5V Operation
MAX6125/MAX6141/MAX6145/MAX6150/MAX6160
Applications
3V/5V Systems
Battery-Powered Systems
Portable and Hand-Held Equipment
Data-Acquisition Systems
Instrumentation and Process Control
Selector Guide
PART
MAX6125
MAX6141
MAX6145
MAX6150
MAX6160
PRESET OUTPUT
VOLTAGE (V)
2.5
4.096
4.5
5
Adjustable
(1.23 to 12.40)
PIN-
PACKAGE
3 SOT23/8 SO
3 SOT23/8 SO
3 SOT23/8 SO
3 SOT23/8 SO
4 SOT143/8 SO
Ordering Information
PART
MAX6125ESA
MAX6125EUR-T
MAX6141ESA
MAX6141EUR-T
TEMP
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
8 SO
3 SOT23-3
8 SO
3 SOT23-3
TOP
MARK
—
EBAA
—
ECAA
Typical Operating Circuit appears on last page.
Ordering Information continued on last page.
Pin Configurations
TOP VIEW
OUT
1
N.C.
2
N.C.
3
GND
4
8
IN
N.C.
N.C.
N.C. (ADJ)
IN
1
GND
1
4
OUT
MAX6125
MAX6141
MAX6145
MAX6150
MAX6160
7
6
5
OUT
2
MAX6125
MAX6141
MAX6145
MAX6150
SOT23-3
MAX6160
3
GND
ADJ
2
3
IN
SO
( ) ARE FOR MAX6160 ONLY
SOT143-4
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
MAX6125/MAX6141/MAX6145/MAX6150/MAX6160
ABSOLUTE MAXIMUM RATINGS
(Voltages With Respect to GND)
IN .......................................................................-0.3V to +13.5V
OUT, ADJ...................................................-0.3V to (V
IN
+ 0.3V)
Output Short-Circuit Duration (to IN or GND).............Continuous
Continuous Power Dissipation (T
A
= +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
(V
IN
= 2.7V, I
OUT
= 0mA, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
Supply Voltage
Output Voltage
Output Voltage
Temperature Coefficient
Output Voltage Noise
Line Regulation
Load Regulation
Quiescent Supply Current
Change in Supply Current
vs. Change in Input Voltage
SYMBOL
V
IN
V
OUT
TCV
OUT
e
n
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
0.1Hz to 10Hz
10Hz to 10kHz
I
SOURCE
= 0mA to 1mA
I
SINK
= 0mA to 1mA
T
A
= +25°C
T
A
= T
MIN
to T
MAX
V
IN
= 2.7V to 12.6V
1.7
CONDITIONS
T
A
= T
MIN
to T
MAX
MIN
2.7
2.475
2.450
15
15
500
1
0.4
1.15
75
50
1
10
100
130
6
2.500
TYP
MAX
12.6
2.525
2.550
50
UNITS
V
V
ppm/°C
µV
P-P
µV/V
mV/mA
µA
µA/V
∆V
OUT
/∆V
IN
V
IN
= 2.7V to 12.6V, T
A
= T
MIN
to T
MAX
∆V
OUT
/∆I
OUT
I
Q
∆I
Q
/∆V
IN
ELECTRICAL CHARACTERISTICS—MAX6141
(V
IN
= 4.3V, I
OUT
= 0mA, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
Supply Voltage
Output Voltage
Output Voltage
Temperature Coefficient
Output Voltage Noise
Line Regulation
Load Regulation
Quiescent Supply Current
Change in Supply Current
vs. Change in Input Voltage
2
SYMBOL
V
IN
V
OUT
TCV
OUT
e
n
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
0.1Hz to 10Hz
10Hz to 10kHz
I
SOURCE
= 0mA to 1mA
I
SINK
= 0mA to 1mA
T
A
= +25°C
T
A
= T
MIN
to T
MAX
V
IN
= 4.3V to 12.6V
1.7
CONDITIONS
T
A
= T
MIN
to T
MAX
MIN
4.3
4.055
4.015
15
25
700
2
0.55
1.65
78
50
1.6
16
105
130
6
4.096
TYP
MAX
12.6
4.140
4.180
50
UNITS
V
V
ppm/°C
µV
P-P
µV/V
mV/mA
µA
µA/V
∆V
OUT
/∆V
IN
V
IN
= 4.3V to 12.6V, T
A
= T
MIN
to T
MAX
∆V
OUT
/∆I
OUT
I
Q
∆I
Q
/∆V
IN
_______________________________________________________________________________________
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
ELECTRICAL CHARACTERISTICS—MAX6145
(V
IN
= 4.7V, I
OUT
= 0mA, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
Supply Voltage
Output Voltage
Output Voltage
Temperature Coefficient
Output Voltage Noise
Line Regulation
Load Regulation
Quiescent Supply Current
Change in Supply Current
vs. Change in Input Voltage
SYMBOL
V
IN
V
OUT
TCV
OUT
e
n
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
0.1Hz to 10Hz
10Hz to 10kHz
I
SOURCE
= 0mA to 1mA
I
SINK
= 0mA to 1mA
T
A
= +25°C
T
A
= T
MIN
to T
MAX
V
IN
= 4.7V to 12.6V
1.7
CONDITIONS
T
A
= T
MIN
to T
MAX
MIN
4.7
4.455
4.410
15
30
800
2
0.6
1.75
79
50
1.8
18
105
130
6
4.500
TYP
MAX
12.6
4.545
4.590
50
UNITS
V
V
ppm/°C
µV
P-P
µV/V
mV/mA
µA
µA/V
MAX6125/MAX6141/MAX6145/MAX6150/MAX6160
∆V
OUT
/∆V
IN
V
IN
= 4.7V to 12.6V, T
A
= T
MIN
to T
MAX
∆V
OUT
/∆I
OUT
I
Q
∆I
Q
/∆V
IN
ELECTRICAL CHARACTERISTICS—MAX6150
(V
IN
= 5.2V, I
OUT
= 0mA, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
Supply Voltage
Output Voltage
Output Voltage
Temperature Coefficient
Output Voltage Noise
Line Regulation
Load Regulation
Quiescent Supply Current
Change in Supply Current
vs. Change in Input Voltage
SYMBOL
V
IN
V
OUT
TCV
OUT
e
n
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
0.1Hz to 10Hz
10Hz to 10kHz
I
SOURCE
= 0mA to 1mA
I
SINK
= 0mA to 1mA
T
A
= +25°C
T
A
= T
MIN
to T
MAX
V
IN
= 5.2V to 12.6V
1.7
CONDITIONS
T
A
= T
MIN
to T
MAX
MIN
5.2
4.950
4.900
15
35
900
1
0.65
1.9
80
50
2
20
110
145
6
5.000
TYP
MAX
12.6
5.050
5.100
50
UNITS
V
V
ppm/°C
µV
P-P
µV/V
mV/mA
µA
µA/V
∆V
OUT
/∆V
IN
V
IN
= 5.2V to 12.6V, T
A
= T
MIN
to T
MAX
∆V
OUT
/∆I
OUT
I
Q
∆I
Q
/∆V
IN
_______________________________________________________________________________________
3
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
MAX6125/MAX6141/MAX6145/MAX6150/MAX6160
ELECTRICAL CHARACTERISTICS—MAX6160
(V
IN
= 2.7V; I
OUT
= 0mA; R1 = 215kΩ ±0.1%, R2 = 208kΩ ±0.1% (circuit of Figure 1); T
A
= +25°C; unless otherwise noted.) (Notes 1, 2)
PARAMETER
Supply Voltage
Output Voltage Range
Output Voltage
ADJ Feedback Voltage Threshold
ADJ Input Current
Output Voltage
Temperature Coefficient
Output Voltage Noise
Line Regulation
Load Regulation
Quiescent Supply Current
Change in Supply Current
vs. Change in Input Voltage
V
OUT
V
ADJ
I
ADJ
TCV
OUT
e
n
∆V
OUT
/∆V
IN
∆V
OUT
/∆I
OUT
I
Q
∆I
Q
/∆V
IN
V
ADJ
= 1.23V
T
A
= T
MIN
to T
MAX
0.1Hz to 10Hz
10Hz to 10kHz
V
IN
= 2.7V to 12.6V, T
A
= T
MIN
to T
MAX
I
SOURCE
= 0mA to 1mA
I
SINK
= 0mA to 1mA
T
A
= +25°C
T
A
= T
MIN
to T
MAX
V
IN
= 2.7V to 12.6V
1.7
SYMBOL
V
IN
CONDITIONS
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
MIN
2.7
1.23
2.475
2.450
1.23
70
15
15
500
1
0.35
1.15
75
50
1
10
100
130
6
100
2.500
TYP
MAX
12.6
V
IN
- 0.2
2.525
2.550
UNITS
V
V
V
V
nA
ppm/°C
µV
P-P
µV/V
mV/mA
µA
µA/V
Note 1:
All devices are 100% production tested at T
A
= +25°C, and are guaranteed by design for T
A
= T
MIN
to T
MAX
as specified.
Note 2:
R1 and R2 program the output voltage in the 1.23V to (V
IN
- 0.2V) range (see the
Setting the MAX6160 Output Voltage
section).
__________________________________________Typical Operating Characteristics
(V
IN
= V
IN(MIN)
, I
OUT
= 0mA, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX6125-TOC01
SUPPLY CURRENT
vs. TEMPERATURE
100
SUPPLY CURRENT (µA)
90
80
70
60
50
40
30
V
IN
= 5V
V
IN
= 3V
V
IN
= 10V
MAX6125-TOC02
LOAD REGULATION (SOURCING)
vs. TEMPERATURE
MAX6125-TOC03
100
90
SUPPLY CURRENT (µA)
80
70
60
50
40
2
VALID OVER V
IN(MIN)
TO V
IN(MAX)
FOR EACH PART
4
6
8
10
12
110
1.0
LOAD REGULATION (mV/mA)
V
OUT
= 4.5V (MAX6145)
V
OUT
= 5.0V (MAX6150)
0.6
0.8
0.4
V
OUT
= 4.096V (MAX6141)
0.2
V
OUT
= 2.5V (MAX6125/MAX6160)
20
10
14
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
0
-50
-25
0
25
50
75
100
INPUT VOLTAGE ( V)
TEMPERATURE (°C)
4
_______________________________________________________________________________________
SOT23, Low-Cost, Low-Dropout,
3-Terminal Voltage References
____________________________Typical Operating Characteristics (continued)
(V
IN
= V
IN(MIN)
, I
OUT
= 0mA, T
A
= +25°C, unless otherwise noted.)
LOAD REGULATION (SINKING)
vs. TEMPERATURE
MAX6125-TOC04
MAX6125/MAX6141/MAX6145/MAX6150/MAX6160
MAX6125/MAX6160
OUTPUT VOLTAGE vs. SOURCE CURRENT
MAX6125-TOC05
MAX6141
OUTPUT VOLTAGE vs. SOURCE CURRENT
MAX6125-TOC06
2.5
V
OUT
= 4.5V (MAX6145)
LOAD REGULATION (mV/mA)
2.0
V
OUT
= 5.0V (MAX6150)
2.501
4.097
2.500
OUTPUT VOLTAGE (V)
4.096
OUTPUT VOLTAGE (V)
1.5
2.499
4.095
1.0
V
OUT
= 4.096V (MAX6141)
0.5
V
OUT
= 2.5V (MAX6125/MAX6160)
0
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
2.498
4.094
2.497
2.496
0
0.5
1.0
1.5
2.0
2.5
SOURCE CURRENT (mA)
4.093
4.092
0
0.5
1.0
1.5
2.0
2.5
SOURCE CURRENT (mA)
MAX6145
OUTPUT VOLTAGE vs. SOURCE CURRENT
MAX6125-TOC07
MAX6150
OUTPUT VOLTAGE vs. SOURCE CURRENT
MAX6125-TOC08
DROPOUT VOLTAGE
vs. SOURCE CURRENT
350
DROPOUT VOLTAGE (mV)
300
250
200
150
100
50
MAX6125-TOC09
4.501
5.001
400
4.500
OUTPUT VOLTAGE (V)
5.000
OUTPUT VOLTAGE (V)
4.499
4.999
4.498
4.998
4.497
4.997
4.496
0
0.5
1.0
1.5
2.0
2.5
SOURCE CURRENT (mA)
4.996
0
0.5
1.0
1.5
2.0
2.5
SOURCE CURRENT (mA)
0
0.0 0.5
1.0 1.5
2.0 2.5
3.0 3.5
4.0
SOURCE CURRENT (mA)
MAX6125/MAX6160
DROPOUT VOLTAGE vs. TEMPERATURE
MAX6125-TOC10
MAX6141/MAX6145/MAX6150
DROPOUT VOLTAGE vs. TEMPERATURE
MAX6125-TOC11
MAX6160
ADJ INPUT CURRENT vs. TEMPERATURE
V
IN
= 2.7V
V
ADJ
= 1.23V
MAX6125-TOC12
120
I
OUT
= 1mA
DROPOUT VOLTAGE (mV)
110
100
I
OUT
= 1mA
DROPOUT VOLTAGE (mV)
96
120
100
ADJ INPUT CURRENT (nA)
80
60
40
20
0
100
92
90
88
80
84
70
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
80
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
________________________________________________________________________________________
5
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