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SC1578

Part Number	SC1578
Manufacturer	Semtech Corporation
Description	HIGH-EFFICIENCY STEP-DOWN DC-DC CONVERTER
Published	Apr 8, 2005
Detailed Description	HIGH-EFFICIENCY STEP-DOWN DC-DC CONVERTER January 29, 1998 SC1578 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.sem...
Datasheet	SC1578 PDF File

Overview

...tech.
com DESCRIPTION The SC1578 is a high performance step-down DC-DC converter, designed to drive an external P-channel MOSFET to generate programmable output voltages.
Two main schemes of pulse-skipping and pulsefrequency modulation are employed to maintain low quiescent current and high conversion efficiency over wide ranges of input voltage and loads.
The SC1578 delivers 10mA to 2A of output current with 87%-93% efficiency at VIN=9V, VOUT=5V.
A current sense comparator with both inverting and non-inverting inputs uncommitted is included to provide the crucial function of either current limit protection or constant output current control.
When the SC1578 is used in a highside current sen...

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