LM431A データシートの表示（PDF） - TAITRON Components Incorporated

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LM431A

Shunt Regulator

TAITRON Components Incorporated 

Shunt Regulator

LM431 LM431A LM431B

Shunt Regulator

General Description

• The LM431 Series ICs are three-terminal programmable

shunt regulators with guaranteed thermal stability over a

TO-92

SOT-23

full operation range. These monolithic ICs voltage reference

operate as a low temperature coefficient Zener which is

programmable from Vref to 36V with two external resistors.

These devices exhibit a wide operating current range of 1.0 to

100mA with a typical dynamic impedance of 0.15 to 0.22Ω. The

characteristics of these references make them excellent

SOT-23-5

SOP-8

replacements for Zener diodes in many applications such as

digital voltmeters, power supplies and op amp circuitry

The 2.5V reference makes it convenient to obtain a stable

reference from 5.0V logic supplies, and since the LM431 series

operates as a shunt regulator, it can be used as either a positive or

SOT-89

negative voltage reference.

• The output voltage of both types can be set to any value between VREF (2.5V) and the corresponding

maximum cathode voltage.

.

Features

Applications

• Programmable Precise Output Voltage from

2.5V to 36V

• High Stability under Capacitive Load

• Low Temperature Deviation

• Can be used in either positive or negative

Voltage reference

• Low Dynamic Output Impedance: 0.15 to 0.22Ω Typical

• Operating Current from 1.0mA to 100mA

• Low Output Noise Voltage

• RoHS Compliance

• Charger

• Voltage Adapter

• Switching Power Supply

• Graphic Card

• Precision Voltage Reference

TAITRON COMPONENTS INCORPORATED www.taitroncomponents.com

Tel: (800)-TAITRON (800)-824-8766 (661)-257-6060

Fax: (800)-TAITFAX (800)-824-8329 (661)-257-6415

Rev. A/DX 2007-06-04

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