SC4519H Datasheet PDF | Semtech Corporation

Semtech Corporation SC4519H

The SC4519H is a current mode switching regulator with an integrated switch, operating at 600kHz with separate sync and enable functions. The integrated switch allows for cost effective low power solutions (peak switch current 3 amps). The sync function allows customers to synchronize to a faster clock in order to avoid frequency beating in noise sensitive applications.

Part No.	SC4519H
Datasheet	SC4519H Download
Manufacturer	Semtech Corporation
Description	3A Step-Down Switching Regulator
Buy	Stock & Price

DESCRIPTION

High frequency of operation allows for very small passive components. Current mode operation allows for fast dynamic response and instantaneous duty cycle adjustment as the input varies (ideal for CPE applications where the input is a wall plug power). applications where battery life is important. SC4519H

FEATURES

Integrated 3 Amp switch 600kHz frequency of operation Current mode controller Synchronizable to higher frequency up to 1.2MHz Precision enable threshold SO-8 EDP package. Lead free product, fully WEEE and RoHS compliant

APPLICATIONS

XDSL modems CPE equipment DC-DC point of load applications Portable equipment The low shutdown current makes it ideal for portable The SC4519H is a 600kHz switching regulator synchronizable to a faster frequency from 750kHz to 1.2MHz. Typical Application Circuit D1 1 VIN Enable C3 2 5 8 BST IN SW 3 6 7 C1 L1 VOUT R1 SC4519H EN SYNC GND 4 FB COMP D2 R2 C2 C4 R3 Revision: September 11, 2007 1 SC4519H POWER MANAGEMENT

ABSOLUTE MAXIMUM RATINGS

Exceeding the specifications below may result in permanent damage to the device, or device malfunction.