PROGRAMMABLE PRECISION SHUNT REGULATOR

TL431Z/AZ/CZ

2009 – Obsolete

- 1 -

HTC

TO-92 PKG

3

2

1

SOT-23 PKG

2

1

3

SOT-89 PKG

1

2

3

PIN 1. Reference

2. Anode

3. Cathode

ORDERING INFORMATION

Device (Marking)

Package

TL431Z

TL431-AZ

TL431-CZ

TO-92

431Z

SOT-23 3L

FEATURES

Programmable Output Voltage to 40V

Guaranteed 0.5% Reference Voltage Tolerance

Low (0.2Ω Typ.) Dynamic Output Impedance

Cathode Current Range(Continuous) – 100 ~ 150 mA

Equivalent Full Range Temperature Coefficient of

50PPM/℃

Temperature Compensated For Operation Over

Full Rate Operating Temperature Range

Low Output Noise Voltage

Fast Turn-on Response

TO-92, SOT-89 or SOT-23 3L Package

APPLICATION

Shunt Regulator

Precision High-Current Series Regulator

High-Current Shunt Regulator

Crowbar Circuit

PWM Converter With Reference

Voltage Monitor

Precision Current Limiter

DESCRIPSION

The TL431Z is a three-terminal adjustable shunt regulator

with

specified

thermal

stability

over

applicable

external resistors. This device has a typical dynamic

output impedance of 0.2Ω. Active output circuitry provides

a very sharp turn-on characteristic, making this device

excellent replacement for zener diodes in many

applications. The TL431Z is characterized for operation

from -40℃ to +125℃.

431Z

SOT-89 3L

Absolute Maximum Ratings

(Operating temperature range applies unless otherwise specified)

CHARACTERISTIC

SYMBOL

MIN.

MAX.

UNIT

Cathode Voltage

-

42

V

Cathode Current Range(Continuous)

-100

150

mA

Reference Input Current Range

0.05

10

mA

Junction Temperature Range

0

150

℃

Storage Temperature Range

-60

150

℃

Operating Temperature Range

-40

125

℃

T

O

P

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