CYStech Electronics Corp.

Spec. No. : C502A3

Issued Date : 2003.03.26

Revised Date : 2008.10.09

Page No. : 1/6

TL431A3

CYStek Product Specification

Adjustable Precision Shunt Regulators

TL431A3

Description

The TL431A3 series are three-terminal adjustable regulators with

guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any

have a typical dynamic output impedance of 0.2

Ω. Active output circuitry provides a very sharp turn-on

characteristic, making these devices excellent replacement for zener diodes in many applications.

TO-92

Features

• Programmable output voltage

• Low output noise voltage

• Temperature coefficient is 50ppm/°C typical

• Fast turn on response

• Temperature compensated for operation over

• Pb-free package

• full temperature range

Classification

Rank

A

B

C

2.495

±0.5%

2.495

±1%

2.495

±2%

Absolute Maximum Ratings

(Operating temperature range applies unless otherwise specified)

Characteristics

Symbol

Value

Unit

Cathode Voltage

37

V

Cathode Current Range (Continuous)

-100~+150

mA

Reference Input Current Range

-0.05~+10

mA

700

mW

1.5

W

Thermal Resistance, Junction to Ambient

178

°C/W

Thermal Resistance, Junction to Case

83

°C/W

Operating Temperature Range

Topr

-40~+125

°C

Junction Temperature Range

Tj

-40~+150

°C

Storage Temperature Range

-65~+150

°C