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AP431AN

ADJUSTABLE PRECISION SHUNT REGULATOR

Advanced Power Electronics Corp 

Advanced Power

Electronics Corp.

AP431A

ADJUSTABLE PRECISION SHUNT

REGULATOR

Features

Description

• Precision reference voltage

AP431A : 2.495V ± 0.5%

• Sink current capability: 200mA

• Minimum cathode current for regulation: 300μA

• Equivalent full-range temp coefficient: 30 ppm/oC

• Fast turn-on response

• Low dynamic output impedance: 0.2Ω

• Programmable output voltage to 36V

• Low output noise.

• Packages: TO-92,SOT-23, SOT-25 and SOP-8

SOT-89

• RoHS Compliant & Halogen Free Product

The AP431A are 3-terminal adjustable precision

shunt regulators with guaranteed temperature

stability over the applicable extended commercial

temperature range. The output voltage may be set at

any level greater than 2.495V(VREF) up to 36V merely

by selecting two external resistors that act as a

voltage divider network. These devices have a

typical output impedance of 0.2Ω. Active output

circuitry provides very sharp turn-on characteristics,

making these devices excellent improved

replacements for Zener diodes in many applications.

The precise (+/-) 1% Reference voltage tolerance of

the AP431A make it possible in many applications to

avoid the use of a variable resistor, consequently

saving cost and eliminating drift and reliability

problems associated with it.

Ordering Information

A P 431AX -X

Package

T : TO-92

N/NR : SOT-23

Y : SOT-25

M : SOP-8

G: SOT-89

Typical Application Circuit

VIN

+

Cin

AAPP443311A

Reference Voltage

Tolerance :

A : +/- 0.5%

B : +/- 1%

VOUT

R1

+

Cout

R2

www.a-power.com.tw

VOUT = (1+R1/R2)VREF

Precision Regulator

1

20130401V6.2

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