MAXIM MAX6037 Technical data

General Description

The MAX6037 family of low-dropout, micropower volt­age references offer fixed and adjustable output volt­age options ranging from 1.184V to 5V. Connect an
external resistive-divider on the MAX6037_ADJ to
adjust the output voltage from 1.184V to 5V. The other
devices in the MAX6037 family feature fixed output volt­ages of 1.25V, 2.048V, 2.5V, 3.0V, 3.3V, and 4.096V.
The MAX6037 offers shutdown functionality with an
active-low shutdown (500nA, max).

These series-mode voltage references operate from a

2.5V to 5.5V supply and consume 275µA (max) quies­cent current. The output is stable driving loads from

0.02µF to 1µF and can source and sink 5mA of load
current. The MAX6037 offers a low temperature coeffi­cient of 25ppm/°C and initial accuracy of ±0.2% (max).
The low dropout voltage (100mV, max at 1mA) and
supply-independent, low supply current make the
MAX6037 ideal for battery-powered applications.

The MAX6037 is available in the miniature 5-pin SOT23
package and is specified over the -40°C to +125°C
automotive temperature range.

Applications

Medical Equipment Portable Equipment

Wireless LAN Precision Regulators

Features

♦ Adjustable V

OUT

: 1.184V to 5V

♦ Fixed Outputs: 1.25V, 2.048V, 2.5V, 3.0V, 3.3V,

and 4.096V

♦ Shutdown Current < 500nA (max)

♦ 25ppm/°C (max) Temperature Coefficient (A Grade)

♦ ±0.2% (max) Initial Accuracy (A Grade)

♦ Low 100mV (max) Dropout Voltage at 1mA Load

Current

♦ 2.5V to 5.5V Input Voltage Range

♦ 5mA Sink and Source Current Capability

♦ Available in 5-Pin SOT23 Package

♦ Operates Over the Automotive Temperature

Range: -40°C to +125°C

MAX6037

Low-Power, Fixed and Adjustable Reference

with Shutdown in SOT23

________________________________________________________________ Maxim Integrated Products 1

Ordering Information/Selector Guide

19-3192; Rev 1; 12/07

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.

Ordering Information/Selector Guide continued at end of data sheet.

Typical Operating Circuit

OUT

*OPTIONAL

*

IN

2.5V TO 5.5V INPUT

GND

SHDN

REFERENCE

OUTPUT

0.02µF
TO 1µF

MAX6037

Pin Configuration appears at end of data sheet.

PART

OUTPUT

VOLTAGE (V)

INITIAL

MAX TEMPCO

(ppm/°C)

PIN-PACKAGE

PKG

CODE

TOP

MARK

MAX6037AAUK12+T 1.25 0.2 25 5 SOT23-5 U5-2 AEIV

MAX6037BAUK12+T 1.25 0.3 50 5 SOT23-5 U5-2 AEIW

MAX6037CAUK12+T 1.25 0.5 50 5 SOT23-5 U5-2 AEIX

MAX6037AAUK21+T 2.048 0.2 25 5 SOT23-5 U5-2 AEIY

MAX6037BAUK21+T 2.048 0.3 50 5 SOT23-5 U5-2 AEIZ

MAX6037CAUK21+T 2.048 0.5 50 5 SOT23-5 U5-2 AEJA

+Denotes a lead-free package.

T = Tape and reel.
Note: All devices are specified over the -40°C to +125°C operating temperature range.

ACCURACY %

MAX6037

Low-Power, Fixed and Adjustable Reference
with Shutdown in SOT23

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—MAX6037_12 (V

OUT

= 1.25V)

(V

IN

= V

SHDN

= +3V, I

OUT

= 0, C

OUT

= 0.1µF, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

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.

IN, OUT, SHDN, ADJ to GND...................................-0.3V to +6V

Output Short Circuit to GND or IN............................. Continuous

Continuous Power Dissipation (T

A

= +70°C)

5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW

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

PARAMETER SYMBOL CONDITIONS

OUTPUT

MAX6037A_12 (0.2%)

MAX6037B_12 (0.3%)

Output Voltage V

OUT

TA = +25°C

MAX6037C_12 (0.5%)

V

MAX6037A_12 6 25

Output-Voltage Temperature
Coefficient (Note 2, 4)

TCV

OUT

MAX6037B/C_12 6 50

Line Regulation

2.5V ≤ VIN ≤ 5.5V

%/V

Sourcing: 0 ≤ I

OUT

≤ 1mA

Sourcing: 1mA ≤ I

OUT

≤ 5mA

Sinking: -1mA ≤ I

OUT

≤ 0

Load Regulation

Sinking: -5mA ≤ I

OUT

≤ -1mA

Short to GND 16

OUT Short-Circuit Current I

SC

Short to IN 32

mA

Thermal Hysteresis (Note 3)

Long-Term Stability

1000h at TA = +25°C

DYNAMIC

f = 0.1Hz to 10Hz 6

Noise Voltage e

OUT

f = 10Hz to 1kHz 15

Initial power-up

Turn-On Settling Time t

R

To V

OUT

= 0.1%
of final value,
C

OUT

= 0.02µF

V

IN

= 3V, SHDN pulled

from low to high

75

µs

Output Impedance when
Disabled

Z

OUT

VIN = 3V, V

SHDN

= 0V

kΩ

Capacitive-Load Stability
Range (Note 4)

C

OUT

1µF

INPUT

Supply Voltage Range V

IN

Guaranteed by line regulation test 2.5 5.5 V

Quiescent Supply Current I

IN

275 µA

Shutdown Supply Current I

SHDN

V

SHDN

= 0V

500 nA

∆V

/∆V

OUT

IN

∆V

/∆I

OUT

OUT

∆V

/cycle 485 ppm

OUT

∆V

/time

OUT

MIN TYP MAX UNITS

1.2475 1.250 1.2525

1.2462 1.250 1.2538

1.2438 1.250 1.2563

0.02

0.0006 0.0096

0.008 0.072

0.006 0.072

0.025 0.12

0.014 0.12

133 ppm

360

125

190

0.05

ppm/°C

%/mA

µV

P-P

µV

RMS

MAX6037

Low-Power, Fixed and Adjustable Reference

with Shutdown in SOT23

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—MAX6037_12 (V

OUT

= 1.25V) (continued)

(V

IN

= V

SHDN

= +3V, I

OUT

= 0, C

OUT

= 0.1µF, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS

MIN

TYP

MAX

UNITS

SHUTDOWN (SHDN)

Logic-High Input Voltage V

ENH

2.5V ≤ VIN ≤ 5.5V 2.0 V

Logic-Low Input Voltage V

ENL

2.5V ≤ VIN ≤ 5.5V 0.7 V

Logic-High Input Current I

ENH

2.5V ≤ VIN ≤ 5.5V, V

SHDN

= V

IN

nA

Logic-Low Input Current I

ENL

2.5V ≤ VIN ≤ 5.5V, V

SHDN

= 0V

nA

ELECTRICAL CHARACTERISTICS—MAX6037_21 (V

OUT

= 2.048V)

(V

IN

= V

SHDN

= +3V, I

OUT

= 0, C

OUT

= 0.1µF, TA = T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS

OUTPUT

MAX6037A_21 (0.2%)

MAX6037B_21 (0.3%)

Output Voltage V

OUT

TA = +25°C

MAX6037C_21 (0.5%)

V

MAX6037A_21 6 25

Output-Voltage Temperature
Coefficient (Note 2, 4)

TCV

OUT

MAX6037B/C_21 6 50

Line Regulation

2.5V ≤ VIN ≤ 5.5V

%/V

Sourcing: 0 ≤ I

OUT

≤ 1mA

Sourcing: 1mA ≤ I

OUT

≤ 5mA

Sinking: -1mA ≤ I

OUT

≤ 0

Load Regulation

Sinking: -5mA ≤ I

OUT

≤ -1mA

Short to GND 16

OUT Short-Circuit Current I

SC

Short to IN 32

mA

Thermal Hysteresis (Note 3)

Long-Term Stability

1000h at TA = +25°C

DYNAMIC

f = 0.1Hz to 10Hz 11

Noise Voltage e

OUT

f = 10Hz to 1kHz 25

Initial power-up

Turn-On Settling Time t

R

To V

OUT

= 0.1%
of final value,
C

OUT

= 0.02µF

V

IN

= 3V, SHDN pulled

from low to high

2

ms

Output Impedance when
Disabled

Z

OUT

VIN = 3V, V

SHDN

= 0V

kΩ

Capacitive-Load Stability
Range (Note 4)

C

OUT

1µF

INPUT

Supply Voltage Range V

IN

Guaranteed by line regulation test 2.5 5.5 V

Quiescent Supply Current I

IN

275 µA

Shutdown Supply Current I

SHDN

V

SHDN

= 0V

500 nA

-1000 0.15 +1000

-1000 0.05 +1000

MIN TYP MAX UNITS

2.0439 2.0480 2.0521

2.0418 2.0480 2.0542

2.0378 2.0480 2.0582

∆V

/∆V

OUT

IN

∆V

/∆I

OUT

OUT

∆V

/cycle 458 ppm

OUT

∆V

/time

OUT

0.02

0.0008 0.0107

0.006 0.044

0.004 0.044

0.02 0.195

0.01 0.195

133 ppm

2.1

205

190

0.05

ppm/°C

%/mA

µV

P-P

µV

RMS

MAX6037

Low-Power, Fixed and Adjustable Reference
with Shutdown in SOT23

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—MAX6037_21 (V

OUT

= 2.048V) (continued)

(V

IN

= V

SHDN

= +3V, I

OUT

= 0, C

OUT

= 0.1µF, TA = T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS

SHUTDOWN (SHDN)

Logic-High Input Voltage V

ENH

2.5V ≤ VIN ≤ 5.5V 2.0 V

Logic-Low Input Voltage V

ENL

2.5V ≤ VIN ≤ 5.5V 0.7 V

Logic-High Input Current I

ENH

2.5V ≤ VIN ≤ 5.5V, V

SHDN

= V

IN

nA

Logic-Low Input Current I

ENL

2.5V ≤ VIN ≤ 5.5V, V

SHDN

= 0V

nA

ELECTRICAL CHARACTERISTICS—MAX6037_25 (V

OUT

= 2.500V)

(V

IN

= V

SHDN

= +5V, I

OUT

= 0, C

OUT

= 0.1µF, TA = T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS

MIN

TYP

MAX

UNITS

OUTPUT

MAX6037A_25 (0.2%)

MAX6037B_25 (0.3%)

Output Voltage V

OUT

TA = +25°C

MAX6037C_25 (0.5%)

V

MAX6037A_25 6 25

Output-Voltage Temperature
Coefficient (Note 2, 4)

TCV

OUT

MAX6037B/C_25 6 50

Line Regulation

(V

OUT

+ 0.2V) ≤ VIN ≤ 5.5V

%/V

Sourcing: 0 ≤ I

OUT

≤ 1mA

Sourcing: 1mA ≤ I

OUT

≤ 5mA

Sinking: -1mA ≤ I

OUT

≤ 0

0.2

Load Regulation

Sinking: -5mA ≤ I

OUT

≤ -1mA

0.2

Short to GND 33

OUT Short-Circuit Current I

SC

Short to IN 32

mA

I

SOURCE

= 1mA 40 100

Dropout Voltage (Note 5)

I

SOURCE

= 5mA

410

mV

Thermal Hysteresis (Note 3)

Long-Term Stability

1000h at TA = +25°C

DYNAMIC

f = 0.1Hz to 10Hz 14

Noise Voltage e

OUT

f = 10Hz to 1kHz 30

Initial power-up 2.2

Turn-On Settling Time t

R

To V

OUT

= 0.1%
of final value,
C

OUT

= 0.02µF

V

IN

= 5V, SHDN pulled

from low to high

2

ms

Output Impedance when
Disabled

Z

OUT

VIN = 5V, V

SHDN

= 0V

kΩ

Capacitive-Load Stability
Range (Note 4)

C

OUT

1µF

MIN TYP MAX UNITS

-1000 0.15 +1000

-1000 0.05 +1000

2.4950 2.500 2.5050

2.4925 2.500 2.5075

2.4875 2.500 2.5125

∆V

OUT

/∆V

IN

0.0004 0.012

0.005 0.036

∆V

/∆I

OUT

OUT

0.003 0.036

0.02

0.01

VIN - V

OUT

∆V

/cycle 514 ppm

OUT

∆V

/time

OUT

0.02

190

133 ppm

250

ppm/°C

%/mA

µV

P-P

µV

RMS

MAX6037

Low-Power, Fixed and Adjustable Reference

with Shutdown in SOT23

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS—MAX6037_30 (V

OUT

= 3.000V)

(V

IN

= V

SHDN

= +5V, I

OUT

= 0, C

OUT

= 0.1µF, TA = T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS

OUTPUT

MAX6037A_30 (0.2%)

MAX6037B_30 (0.3%)

Output Voltage V

OUT

TA = +25°C

MAX6037C_30 (0.5%)

V

MAX6037A_30 6 25

Output-Voltage Temperature
Coefficient (Note 2, 4)

TCV

OUT

MAX6037B/C_30 6 50

Line Regulation

(V

OUT

+ 0.2V) ≤ VIN ≤ 5.5V

%/V

Sourcing: 0 ≤ I

OUT

≤ 1mA

Sourcing: 1mA ≤ I

OUT

≤ 5mA

Sinking: -1mA ≤ I

OUT

≤ 0

0.2

Load Regulation

Sinking: -5mA ≤ I

OUT

≤ -1mA

0.2

Short to GND 33

OUT Short-Circuit Current I

SC

Short to IN 32

mA

I

SOURCE

= 1mA 40 100

Dropout Voltage (Note 5)

I

SOURCE

= 5mA

410

mV

Thermal Hysteresis (Note 3)

Long-Term Stability

1000h at TA = +25°C

DYNAMIC

f = 0.1Hz to 10Hz 17

Noise Voltage e

OUT

f = 10Hz to 1kHz 40

Initial power-up 2.4

Turn-On Settling Time t

R

To V

OUT

= 0.1%
of final value,
C

OUT

= 0.02µF

V

IN

= 5V, SHDN pulled

from low to high

2.1

ms

ELECTRICAL CHARACTERISTICS—MAX6037_25 (V

OUT

= 2.500V) (continued)

(V

IN

= V

SHDN

= +5V, I

OUT

= 0, C

OUT

= 0.1µF, TA = T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS

INPUT

Supply Voltage Range V

IN

Guaranteed by line regulation test 2.7 5.5 V

Quiescent Supply Current I

IN

275 µA

Shutdown Supply Current I

SHDN

V

SHDN

= 0V

500 nA

SHUTDOWN (SHDN)

Logic-High Input Voltage V

ENH

2.7V ≤ VIN ≤ 5.5V 2.0 V

Logic-Low Input Voltage V

ENL

2.7V ≤ VIN ≤ 5.5V

V

Logic-High Input Current I

ENH

2.7V ≤ VIN ≤ 5.5V, V

SHDN

= V

IN

nA

Logic-Low Input Current I

ENL

2.7V ≤ VIN ≤ 5.5V, V

SHDN

= 0V

nA

MIN TYP MAX UNITS

-1000 0.15 +1000

-1000 0.05 +1000

MIN TYP MAX UNITS

2.9940 3.000 3.0060

2.9910 3.000 3.0090

2.9850 3.000 3.0150

210

0.05

0.75

∆V

OUT

/∆V

IN

0.0004 0.0133

0.005 0.035

∆V

/∆I

OUT

OUT

0.008 0.03

0.02

0.01

VIN - V

OUT

∆V

/cycle 501 ppm

OUT

∆V

/time

OUT

190

133 ppm

ppm/°C

%/mA

µV

P-P

µV

RMS

MAX6037

Low-Power, Fixed and Adjustable Reference
with Shutdown in SOT23

6 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—MAX6037_30 (V

OUT

= 3.000V) (continued)

(V

IN

= V

SHDN

= +5V, I

OUT

= 0, C

OUT

= 0.1µF, TA = T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS

Output Impedance when
Disabled

Z

OUT

VIN = 5V, V

SHDN

= 0V

kΩ

Capacitive-Load Stability
Range (Note 4)

C

OUT

1µF

INPUT

Supply Voltage Range V

IN

Guaranteed by line regulation test 3.2 5.5 V

Quiescent Supply Current I

IN

275 µA

Shutdown Supply Current I

SHDN

V

SHDN

= 0V

500 nA

SHUTDOWN (SHDN)

Logic-High Input Voltage V

ENH

3.2V ≤ VIN ≤ 5.5V 2.0 V

Logic-Low Input Voltage V

ENL

3.2V ≤ VIN ≤ 5.5V 0.8 V

Logic-High Input Current I

ENH

3.2V ≤ VIN ≤ 5.5V, V

SHDN

= V

IN

nA

Logic-Low Input Current I

ENL

3.2V ≤ VIN ≤ 5.5V, V

SHDN

= 0V

nA

ELECTRICAL CHARACTERISTICS—MAX6037_33 (V

OUT

= 3.300V)

(V

IN

= V

SHDN

= +5V, I

OUT

= 0, C

OUT

= 0.1µF, TA = T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS

OUTPUT

MAX6037A_33 (0.2%)
MAX6037B_33 (0.3%)

Output Voltage V

OUT

TA = +25°C

MAX6037C_33 (0.5%)

V

MAX6037A_33 6 25

Output-Voltage Temperature
Coefficient (Note 2, 4)

TCV

OUT

MAX6037B/C_33 6 50

Line Regulation

(V

OUT

+ 0.2V) ≤ V

IN

≤ 5.5V

%/V

Sourcing: 0 ≤ I

OUT

≤ 1mA

Sourcing: 1mA ≤ I

OUT

≤ 5mA

Sinking: -1mA ≤ I

OUT

≤ 0

Load Regulation

Sinking: -5mA ≤ I

OUT

≤ -1mA

Short to GND 33

OUT Short-Circuit Current I

SC

Short to IN 32

mA

I

SOURCE

= 1mA 40 100

Dropout Voltage (Note 5)

I

SOURCE

= 5mA

410

mV

Thermal Hysteresis (Note 3)

Long-Term Stability

1000h at TA = +25°C

MIN TYP MAX UNITS

0.02

-1000 0.15 +1000

-1000 0.05 +1000

MIN TYP MAX UNITS

300

210

0.05

3.2934 3.300 3.3066

3.2901 3.300 3.3099

3.2855 3.300 3.3165

∆V

/∆V

OUT

IN

∆V

/∆I

OUT

OUT

VIN - V

OUT

∆V

/cycle 514 ppm

OUT

∆V

OUT

/time

0.0003 0.0133

0.005 0.027

0.002 0.027

0.02 0.212

0.01 0.212

190

133 ppm

ppm/°C

%/mA