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 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

High-Supply-Voltage, Precision

Voltage Reference in SOT23

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

19-2606; Rev 3; 11/06

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

MAX6035ESA25

-40°C to +85°C

8 SO

—

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

MAX6035ESA25

40

0.20

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

OUT

N.C.

GND

1

2

8

7

N.C.

N.C.

IN

N.C.

N.C.

SO

3

4

6

5

MAX6035

Pin Configurations

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

Note: The 3-pin SOT23 package code is U3-1. The 8-pin SO

package code is S8-2.