SC1409

更新时间： 2024-10-02 22:43:27

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
8页	111K
描述
1 A Synchronous Switching Regulator

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SC1409 数据手册

1 A Synchronous Switching Regulator SC1409

TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com

June 28, 2000

DESCRIPTION

FEATURES

The SC1409 is a versatile, voltage-mode switching

regulator designed for use in battery operated power

supply applications. A simple, fixed-voltage buck regu-

lator can be implemented using the SC1409 with a

minimum of external components. Internal MOSFETs

and control circuitry minimize board space and design

time. The small device footprint allows for compact

circuit design.

•= Internal MOSFETs

•= Excellent efficiency >88%

•= 1% Voltage accuracy

•= Built-in over current protection

•= 1A Output current

•= 5µA Standby current

•= Industrial temperature range

•= 300kHz/500kHz selectable frequency

SC1409 features include a temperature compensated

voltage reference, triangle wave oscillator, hiccup

mode current limit, an internally compensated error

amplifier, overcurrent temperature protection, soft

start, and under voltage lock out.

APPLICATIONS

•= Handheld equipment

•= PDA power supplies

•= Notebook I/O power supplies

•= Peripheral card supplies

•= High density DC/DC conversion

The SC1409 operates at a selectable, fixed frequency

of 300kHz or 500kHz, or can be synchronized to an

external clock within this range, providing an optimum

compromise between efficiency, external component

size, and cost.

ORDERING INFORMATION

DEVICE⁽¹⁾

PACKAGE

SO-8

SC1409ISTR

Note:

(1) Only available in tape and reel packaging. A reel

contains 2500 devices.

APPLICATION CIRCUIT

Vin=5V

OPEN

0.1uF

SYNC/FSET ISET

EN/SS

AGND

VIN

PHASE

PGND

Vout R3

Vout

3.45V 1.87k 1.00k

3.30V 1.74k 1.00k

3.10V 1.58k 1.00k

2.90V 1.40k 1.00k

2.80V 1.33k 1.00k

2.50V 1.07k 1.00k

1.50V 249 1.00k

L1 100uH

47uF/16V

SC1409IS

0.033uF

47uF/16V

652 MITCHELL ROAD NEWBURY PARK CA 91320

12 3 4 5 6 7 8

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与SC1409相关器件

型号	品牌	获取价格	描述	数据表
SC1409ISTR	SEMTECH	获取价格	1 A Synchronous Switching Regulator
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