SC4517A

更新时间： 2024-11-19 04:05:23

品牌	Logo	应用领域
商升特 - SEMTECH		稳压器开关
页数	文件大小	规格书
15页	270K
描述
1.25MHz, 1.5A Step-Down Switching Regulator

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数据手册

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SC4517A 数据手册

SC4517A

1.25MHz, 1.5A Step-Down

Switching Regulator

POWER MANAGEMENT

Features

Description

The SC4517A is a current mode switching regulator with

an integrated switch, operating at 1.25MHz with separate

sync & enable functions. The integrated switch allows

for cost effective low power solutions (peak switch current

1.5 amps). The sync function allows customers to

synchronize to a faster clock in order to avoid frequency

beating in noise sensitive applications. High frequency

of operation allows for very small passive components.

Current mode operation allows for fast dynamic response

& instantaneous duty cycle adjustment as the input varies

(ideal for CPE applications where the input is a wall plug

power).

Integrated 1.5 Amp switch

1.25MHz frequency of operation

Current mode controller

Synchronizable to higher frequency up to 2MHz

6µA low shutdown current

MSOP-8 and MLPD-8 Lead-free packages. This

product is 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

applications where battery life is important.

The SC4517A is a 1.25MHz switching regulator

synchronizable to a faster frequency from 1.6MHz to

2MHz.

Typical Application Circuit

BST

VIN

VOUT

SC4517AXX

Enable

SYNC

COMP

GND

Revision: December 13, 2006

www.semtech.com

12 3 4 5 6 7...15

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