General Description

The MAX6037 family of low-dropout, micropower volt-

age references offer fixed and adjustable output volt-

age 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 volt-

ages 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) quies-

cent 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 coeffi-

cient 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

♦ 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

Low-Power, Fixed and Adjustable Reference

with Shutdown in SOT23

________________________________________________________________ Maxim Integrated Products

1

PART

TEMP RANGE

PIN-

PACKAGE

TOP

MARK

MAX6037AAUK12-T

-40

°C to +125°C5 SOT23-5

AEIV

MAX6037BAUK12-T

-40

°C to +125°C5 SOT23-5 AEIW

MAX6037CAUK12-T

-40

°C to +125°C5 SOT23-5

AEIX

Ordering Information

PART

OUTPUT

VOLTAGE (V)

MAX

TEMPCO

(ppm/

°C)

INITIAL

ACCURACY

(%, max)

MAX6037AAUK12

1.25

25

0.2

MAX6037BAUK12

1.25

50

0.3

MAX6037CAUK12

1.25

50

0.5

MAX6037AAUK21

2.048

25

0.2

MAX6037BAUK21

2.048

50

0.3

MAX6037CAUK21

2.048

50

0.5

MAX6037AAUK25

2.5

25

0.2

MAX6037BAUK25

2.5

50

0.3

MAX6037CAUK25

2.5

50

0.5

MAX6037AAUK30

3.0

25

0.2

MAX6037BAUK30

3.0

50

0.3

MAX6037CAUK30

3.0

50

0.5

MAX6037AAUK33

3.3

25

0.2

MAX6037BAUK33

3.3

50

0.3

MAX6037CAUK33

3.3

50

0.5

MAX6037AAUK41

4.096

25

0.2

MAX6037BAUK41

4.096

50

0.3

MAX6037CAUK41

4.096

50

0.5

MAX6037AAUKADJ* 1.184 to 5, adj

25

0.2

MAX6037BAUKADJ* 1.184 to 5, adj

50

0.3

MAX6037CAUKADJ* 1.184 to 5, adj

50

0.5

Selector Guide

19-3192; Rev 0; 2/04

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.

Ordering Information 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.

*The accuracy of the MAX6037_ADJ is dependent on the

accuracy of the external resistors. Use 1% resistors with low

temperature coefficient for best overall accuracy.