SC1103

更新时间： 2024-11-16 22:43:27

品牌	Logo	应用领域
商升特 - SEMTECH		控制器
页数	文件大小	规格书
8页	100K
描述
VOLTAGE MODE PWM CONTROLLER

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数据手册

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SC1103 数据手册

VOLTAGE MODE PWM CONTROLLER

SC1103

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

PRELIMINARY - February 29, 2000

DESCRIPTION

FEATURES

The SC1103 is a versatile, low-cost, voltage-

mode PWM controller designed for use in single

ended DC/DC power supply applications. A sim-

ple, fixed-voltage buck regulator can be imple-

mented using the SC1103 with a minimum of ex-

ternal components. Internal level shift and drive

circuitry eliminates the need for an expensive p-

channel, high-side switch. The small device foot-

print allows for compact circuit design.

•

Low cost / small size

Switch mode efficiency (90%)

1% reference voltage accuracy

Over current protection

500mA output drive

5V to 12V Input power source

APPLICATIONS

•

Pentium® P55 Core Supply

Low Cost Microprocessor Supplies

Peripheral Card Supplies

Industrial Power Supplies

High Density DC/DC Conversion

SC1103 features include a temperature compen-

sated voltage reference, triangle wave oscillator,

current limit comparator, frequency shift over-

current protection, and an internally compensated

error amplifier. Pulse by pulse current limiting is

implemented by sensing the differential voltage

across an external resistor, or an appropriately

sized PC board trace.

•

ORDERING INFORMATION

DEVICE⁽¹⁾

PACKAGE

TEMP RANGE (T_J)

The SC1103 operates at a fixed frequency of

200kHz, providing an optimum compromise be-

tween efficiency, external component size, and

cost.

SC1103CS

SO-8

0° to 125°C

Note:

(1) Add suffix ‘TR’ for tape and reel.

BLOCK DIAGRAM

PIN CONFIGURATION

Top View

(SO-8)

Pentium is a registered trademark of Intel Corporation

652 MITCHELL ROAD NEWBURY PARK CA

12 3 4 5 6 7 8

中文翻译

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与SC1103相关器件

型号	品牌	获取价格	描述	数据表
SC1103_05	SEMTECH	获取价格	Asynchronous Voltage Mode PWM Controller for 12V Input
SC1103C-01UTG	LITTELFUSE	获取价格	SC1103C-01UTG采用专有硅雪崩技术装配的瞬态抑制二极管，可保护每个输入/输出引脚
SC1103CS	SEMTECH	获取价格	VOLTAGE MODE PWM CONTROLLER
SC1103CS.TR	SEMTECH	获取价格	Switching Controller, Voltage-mode, 0.5A, 230kHz Switching Freq-Max, PDSO8, MS-012AA, SOP-
SC1103CSTR	SEMTECH	获取价格	0.5A SWITCHING CONTROLLER, 230kHz SWITCHING FREQ-MAX, PDSO8, MS-012AA, SOP-8
SC1103CSTRT	SEMTECH	获取价格	暂无描述
SC1104	SEMTECH	获取价格	Simple, Synchronous Voltage Mode PWM Controller
SC1104A	SEMTECH	获取价格	Simple, Synchronous Voltage Mode PWM Controller
SC1104AISTR	SEMTECH	获取价格	Simple, Synchronous Voltage Mode PWM Controller
SC1104AISTRT	SEMTECH	获取价格	Switching Controller, Voltage-mode, 0.7A, 300kHz Switching Freq-Max, PDSO8, ROHS COMPLIANT