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SC1543 - 400mA/200mA Dual 3.3V Smart Power Switch

Datasheet Summary

Description

The SC1543 provides a glitch free 3.3V output when one of two 3.3V input sources is present.

It does not require external logic to sequence from one input source to the other.

Whenever VIN1 exceeds a predetermined threshold value the internal MOSFET connects it’s source voltage to the output.

Features

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  • = Glitch free transitions between inputs Internal logic selects appropriate input 400mA load current capability from main input Low power shutdown mode Industrial temperature range.

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Datasheet preview – SC1543

Datasheet Details

Part number SC1543
Manufacturer Semtech Corporation
File Size 56.24 KB
Description 400mA/200mA Dual 3.3V Smart Power Switch
Datasheet download datasheet SC1543 Datasheet
Additional preview pages of the SC1543 datasheet.

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Full PDF Text Transcription

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400mA/200mA Dual 3.3V Smart Power Switch PRELIMINARY - October 9, 2000 SC1543 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The SC1543 provides a glitch free 3.3V output when one of two 3.3V input sources is present. It does not require external logic to sequence from one input source to the other. Whenever VIN1 exceeds a predetermined threshold value the internal MOSFET connects it’s source voltage to the output. If the input at VIN1 is below the threshold another internal MOSFET connects VIN2 to the output. If both inputs are at 3.3V then VIN1 will be connected to the output. The SC1543 is designed to provide 400mA from the main input (VIN1) and 200mA from the secondary input (VIN2).
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