General Description

The MAX6043 precision voltage reference provides

accurate preset +2.5V, +3.3V, +4.096V, +5.0V, and

+10V reference voltages from up to +40V input volt-

ages. The MAX6043 features a proprietary temperature

coefficient curvature-correction circuit and laser-

trimmed thin-film resistors that result in a very low tem-

perature coefficient of 15ppm/°C (max) and excellent

initial accuracy of 0.05% (max). Low temperature drift

and low noise make the MAX6043 ideal for use with

high-resolution A/D or D/A converters.

The MAX6043 draws 320µA of supply current and

sources 10mA or sinks 0.6mA of load current. The

MAX6043 uses bandgap technology for low-noise per-

formance and excellent accuracy. The MAX6043 does

not require an output bypass capacitor for stability, and

is stable with capacitive loads up to 100µF. Eliminating

the output bypass capacitor saves valuable board area

in space-critical applications. The supply-independent,

low supply current makes the MAX6043 ideal for bat-

tery-operated, high-performance systems.

The MAX6043 is available in a 6-pin SOT23 package

and operates over the automotive (-40°C to +125°C)

temperature range.

Applications

Analog-to-Digital Converters

Digital-to-Analog Converters

Digital Voltmeters

Voltage Regulators

Threshold Detectors

Features

o +2.5V, +3.3V, +4.096V, +5.0V, or +10V Output

Voltages

o Excellent Temperature Stability: 15ppm/°C (max)

o Tight Initial Accuracy: 0.05% (max)

o Tiny SOT23 Package

o Wide +4.5V to +40V Supply Voltage Range

o Short-Circuit Protected

o Wide Operating Temperature Range

-40°C to +125°C

o Stable with Capacitive Loads from 0 to 100µF

o No External Capacitors Required for Stability

Precision High-Voltage Reference in SOT23

________________________________________________________________ Maxim Integrated Products

1

19-3036; Rev 1; 5/04

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

PART

TEMP RANGE

PIN-

PACKAGE

TOP

MARK

MAX6043AAUT25-T

-40°C to +125°C

6 SOT23-6

ABRZ

MAX6043BAUT25-T

-40°C to +125°C

6 SOT23-6

ABDQ

MAX6043CAUT25-T

-40°C to +125°C

6 SOT23-6

ABDR

Ordering Information continued at end of data sheet.

Typical Operating Circuit appears at end of data sheet.

Selector Guide

PART

OUTPUT

VOLTAGE

(V)

TEMPCO

(ppm/

-40

+125

INITIAL

ACCURACY

(%)

MAX6043AAUT25

2.5

15

0.06

MAX6043BAUT25

2.5

20

0.1

MAX6043CAUT25

2.5

65

0.5

MAX6043AAUT33

3.3

15

0.06

MAX6043BAUT33

3.3

20

0.1

MAX6043CAUT33

3.3

65

0.5

MAX6043AAUT41

4.096

15

0.06

MAX6043BAUT41

4.096

20

0.1

MAX6043CAUT41

4.096

65

0.5

MAX6043AAUT50

5.0

15

0.06

MAX6043BAUT50

5.0

20

0.1

MAX6043CAUT50

5.0

65

0.5

MAX6043AAUT10

10.0

15

0.05

MAX6043BAUT10

10.0

20

0.1

MAX6043CAUT10

10.0

65

0.5

GND

IN

I.C.*

*INTERNALLY CONNECTED. DO NOT CONNECT.

16

OUTS

5

OUTF

I.C.*

MAX6043

SOT23-6

TOP VIEW

2

34

Pin Configuration