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SC4431 - SHUNT REGULATOR WITH OPEN COLLECTOR OR OUTPUT

Description

The SC4431 is a four terminal device for regulating an isolated power supply with very low output voltage.

It is intended to be used as a replacement for three terminal shunt regulators such as SC431L where the output voltage is too low for them to function in conjunction with an opto-isolator.

Features

  • = Trimmed bandgap design - initial accuracies to.
  • =.
  • =.
  • =.
  • = + 0.5% 40mA drive capability Wide supply voltage range - 1.5V to 15V Low supply current - typically 110µA Full industrial temperature range.

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Datasheet preview – SC4431

Datasheet Details

Part number SC4431
Manufacturer Semtech Corporation
File Size 51.33 KB
Description SHUNT REGULATOR WITH OPEN COLLECTOR OR OUTPUT
Datasheet download datasheet SC4431 Datasheet
Additional preview pages of the SC4431 datasheet.

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Full PDF Text Transcription

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SHUNT REGULATOR WITH OPEN COLLECTOR OR OUTPUT PRELIMINARY - September 11, 2000 SC4431 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The SC4431 is a four terminal device for regulating an isolated power supply with very low output voltage. It is intended to be used as a replacement for three terminal shunt regulators such as SC431L where the output voltage is too low for them to function in conjunction with an opto-isolator. It achieves this by having seperate supply and output pins, allowing the output to sink current at voltages as low as 0.2V, while the supply pin still has sufficient voltage for the device to function. In this way, allowing for a 1.6V drop through an opto-isolator diode, regulation down to 1.8V out can be achieved.
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