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SC1543

Semtech Corporation
Part Number SC1543
Manufacturer Semtech Corporation
Description 400mA/200mA Dual 3.3V Smart Power Switch
Published Apr 8, 2005
Detailed Description 400mA/200mA Dual 3.3V Smart Power Switch PRELIMINARY - October 9, 2000 SC1543 TEL:805-498-2111 FAX:805-498-3804 WEB:ht...
Datasheet PDF File SC1543 PDF File

SC1543
SC1543

Overview
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...


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