General Description

The MAX6035 is a high-voltage, precision micropower

voltage reference. This three-terminal device is available

with output voltage options of 2.5V, 3.0V, and 5.0V. It is an

excellent upgrade for industry-standard devices such as

the REF02 and REF43. The MAX6035 offers 14x lower

power than the REF02 and 5x lower power than the

REF43, as well as a reduced package size from an 8-pin

SO to a 3-pin SOT23. The MAX6035 features a proprietary

temperature coefficient curvature-correction circuit and

laser-trimmed, thin-film resistors that result in a very low

temperature coefficient of 25ppm/°C (max) and an initial

accuracy of ±0.2% (max).

The MAX6035 typically draws only 73µA of supply cur-

rent and can source 10mA or sink 2mA of load current.

Unlike conventional shunt-mode (two-terminal) refer-

ences that waste supply current and require an external

resistor, this device offers a supply current that is virtu-

ally independent of the supply voltage and does not

require an external resistor. Additionally, this internally

compensated device does not require an external com-

pensation capacitor, but is also stable with capacitive

loads up to 5µF. Eliminating the external compensation

capacitor saves valuable board area in space-critical

applications. The supply independent, ultra-low supply

current makes this device ideal for battery-operated,

high-performance systems.

The MAX6035 is available in a 3-pin SOT23 package

and is specified for operation from -40°C to +125°C.

Applications

Features

o Wide Supply Voltage Range: Up to 33V

o 25ppm/°C (max) Temperature Coefficient

(-40°C to +85°C)

o ±0.2% (max) Initial Accuracy

o Small 3-Pin SOT23 Package

o 95µA (max) Quiescent Supply Current

o 10mA Source Current, 2mA Sink Current

o No Output Capacitor Required

o Stable with Capacitive Loads up to 5µF

o Output Voltages: 2.5V, 3.0V, 5.0V

High-Supply-Voltage, Precision

Voltage Reference in SOT23

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

19-2606; Rev 1; 5/03

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.

PART

TEMP RANGE

PIN-

PACKAGE

TOP

MARK

MAX6035AAUR25-T

-40°C to +125°C

3 SOT23-3

FZMW

MAX6035BAUR25-T

-40°C to +125°C

3 SOT23-3

FZMX

MAX6035AAUR30-T

-40°C to +125°C

3 SOT23-3

FZMY

MAX6035BAUR30-T

-40°C to +125°C

3 SOT23-3

FZMZ

MAX6035AAUR50-T

-40°C to +125°C

3 SOT23-3

FZNA

MAX6035BAUR50-T

-40°C to +125°C

3 SOT23-3

FZNB

PART

MAXIMUM

TEMPCO

(ppm/°C)

(-40°C to +85°C)

MAXIMUM

INITIAL

ACCURACY

(%)

OUTPUT

VOLTAGE

(V)

MAX6035AAUR25

25

0.20

2.5

MAX6035BAUR25

65

0.50

2.5

MAX6035AAUR30

25

0.20

3.0

MAX6035BAUR30

65

0.50

3.0

MAX6035AAUR50

25

0.20

5.0

MAX6035BAUR50

65

0.50

5.0

Selector Guide

OUT

1

3

GND

IN

MAX6035

SOT23

TOP VIEW

2

Pin Configuration

MAX6035

0.1

µF*

*CAPACITOR IS OPTIONAL.

REFERENCE

OUT

OUT

IN

GND

+SUPPLY INPUT (SEE SELECTOR GUIDE)

Typical Operating Circuit

4mA to 20mA Industrial

Control Loops

Li+ Battery Chargers

12-Bit A/D and D/A

Converters

Digital Multimeters

Portable Data-Acquisition

Systems

Low-Power Test

Equipment