Advanced Monolithic Systems, Inc.

www.advanced-monolithic.com

Phone (925) 443-0722

Fax (925) 443-0723

Advanced

AMS3431

Monolithic

PRECISION ADJUSTABLE SHUNT REGULATOR

Systems

RoHS compliant

FEATURES

APPLICATIONS

• Trimmed 0.25% Reference

• Battery Powered Systems

• Wide Operating Current Range 250µA to 150mA

• Switching Power Supplies

• Low Dynamic Output Impedance

• Adjustable Power Supplies

• Low Output Noise

• Linear Regulators

• Nominal Temperature Range to 85°C

• Error Amplifiers

• Temperature-Compensated: 60ppm/°C

• Notebook/Personal Computer

• Internal Amplifier with 150mA Capability

• Monitors/ VCR/ TV

• Pagers

GENERAL DESCRIPTION

The AMS3431 is a three-terminal adjustable shunt regulator with guaranteed temperature stability over the entire range of

operation. The output voltage can be set to any value between 2.5V (VREF) and 36V by adding two external resistors. Due to

the sharp turn-on characteristics this device is an excellent replacement for zener diodes in many applications.

AMS3431 is available in the space saving SOT-23 package and in the TO-92 package.

ORDERING INFORMATION:

TOL.

PACKAGE TYPE

OPERATING

TO-92

3 LEAD SOT-23

TEMPERATURE RANGE

±0.25%

AMS3431AN

AMS3431AM

-40 to +85

° C

±0.5%

AMS3431BN

AMS3431BM

-40 to +85

° C

±1.0%

AMS3431CN

AMS3431CM

-40 to +85

° C

PIN CONNECTIONS

TO-92

3L SOT-23

Plastic Package (N)

(M)

12

3

CATHODE

ANODE

REF

CATHODE

REF

ANODE

Bottom View

Top View