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SC431 - ADJUSTABLE SHUNT REGULATOR

General Description

The SC431 is a three terminal adjustable shunt regulator with thermal stability guaranteed over temperature.

The output voltage can be adjusted to any value from 2.5V (VREF) to 36V with two external resistors.

The SC431 has a typical dynamic output impedance of 0.25Ω.

Key Features

  • Wide operating current range 100µA to 150mA.
  • Low dynamic output impedance 0.25 Ω typ.
  • Trimmed bandgap design + 0.5%.
  • Alternate for TL431, LM431 & AS431.

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Datasheet Details

Part number SC431
Manufacturer SEMTECH
File Size 221.89 KB
Description ADJUSTABLE SHUNT REGULATOR
Datasheet download datasheet SC431 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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ADJUSTABLE SHUNT REGULATOR SC431 April 13, 1998 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The SC431 is a three terminal adjustable shunt regulator with thermal stability guaranteed over temperature. The output voltage can be adjusted to any value from 2.5V (VREF) to 36V with two external resistors. The SC431 has a typical dynamic output impedance of 0.25Ω. Active output circuitry provides a very sharp turn on characteristic, making the SC431 an excellent replacement for zener diodes. The SC431 shunt regulator is available in three voltage tolerances (0.5%, 1.0% and 2.0%) and three package options (SOT-23-3, SO-8 and TO-92). The three voltage tolerances allow the designer the opportunity to select the proper cost/tolerance for their application.