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參數(shù)資料
| 型號： | SC1103 |
| 廠商： | Semtech Corporation |
| 英文描述： | VOLTAGE MODE PWM CONTROLLER |
| 中文描述： | 電壓模式PWM控制器 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 97K |
| 代理商： | SC1103 |
SC1103
2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA
VOLTAGE MODE PWM CONTROLLER
PRELIMINARY - February 29, 2000
1
BLOCK DIAGRAM
Pentium is a registered trademark of Intel Corporation
PIN CONFIGURATION
Top View
(SO-8)
DESCRIPTION
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.
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.
The SC1103 operates at a fixed frequency of
200kHz, providing an optimum compromise be-
tween efficiency, external component size, and
cost.
FEATURES
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
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
ORDERING INFORMATION
DEVICE
PACKAGE
(1)
TEMP RANGE (T
J
)
SC1103CS
SO-8
0° to 125°C
Note:
(1) Add suffix ‘TR’ for tape and reel.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SC1103CS | VOLTAGE MODE PWM CONTROLLER |
| SC1109EVB | Circular Connector; Body Material:Aluminum Alloy; Series:D38999; No. of Contacts:37; Connector Shell Size:15; Connecting Termination:Grounded; Gender:Male |
| SC1109CSTR | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| SC1109 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| SC1112 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC1103_05 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Asynchronous Voltage Mode PWM Controller for 12V Input |
| SC1103CS | 制造商:Semtech Corporation 功能描述:Swithed-Mode Power Supply Controller, Voltage Mode Type, 8 Pin, Plastic, SOP |
| SC1103CS.TR | 制造商:Semtech Corporation 功能描述:Voltage Mode PWM Controller 500mA 8-Pin SOIC T/R |
| SC1103CS.TR.T | 制造商:Semtech Corporation 功能描述:Voltage Mode PWM Controller 500mA 8-Pin SOIC T/R |
| SC1103CS.TRT | 制造商:Semtech Corporation 功能描述:Voltage Mode PWM Controller 500mA 8-Pin SOIC T/R |
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