LM431C(2003) データシートの表示（PDF） - Fairchild Semiconductor

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LM431C
(Rev.:2003)

Programmable Shunt Regulator

Fairchild Semiconductor 

LM431A/LM431B/LM431C

Programmable Shunt Regulator

www.fairchildsemi.com

Features

• Programmable Output Voltage to 36 Volts

• Low Dynamic Output Impedance 0.20 Typical

• Sink Current Capability of 1.0 to 100mA

• Equivalent Full-Range Temperature Coefficient of

50ppm/°C Typical

• Temperature Compensated for Operation Over Full Rated

Operating Temperature Range

• Low Output Noise Voltage

• Fast Turn-on Response

Description

The LM431A/LM431B/LM431C are three terminal output

adjustable regulators with thermal stability over operating

temperature range. The output voltage can be set any value

between VREF (approximately 2.5 volts) and 36 volts with

two external resistors. These devices have a typical dynamic

output impedance of 0.2Ω Active output circuit provides a

sharp turn-on characteristic, making these devices excellent

replacement for Zener Diodes in many applications.

TO-92

Internal Block Diagram

1

1. Ref 2. Anode 3. Cathode

8-DIP

8-SOP

1

1.Cathode 2.3.4.5.7.NC

6.Anode 8.Ref

1

1.Cathode 2.3.6.7.Anode

4.5.NC 8.Ref

REFERENCE

REFERENCE (R)

2.5 Vref

ANODE

CATHODE (K)

ANODE (A)

©2003 Fairchild Semiconductor Corporation

CATHODE

Rev. 1.0.7

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