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SC1101CS.TR PDF预览

SC1101CS.TR

更新时间: 2024-09-30 03:26:55
品牌 Logo 应用领域
商升特 - SEMTECH 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
7页 182K
描述
Asynchronous Voltage Mode PWM Controller

SC1101CS.TR 技术参数

生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP, SOP8,.25针数:8
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.79
Is Samacsys:N模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:VOLTAGE-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:5.25 V最小输入电压:4.75 V
标称输入电压:5 VJESD-30 代码:R-PDSO-G8
长度:4.9 mm功能数量:1
端子数量:8最高工作温度:70 °C
最低工作温度:封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP8,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
认证状态:Not Qualified座面最大高度:1.75 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:SINGLE最大切换频率:230 kHz
温度等级:COMMERCIAL端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
宽度:3.9 mmBase Number Matches:1

SC1101CS.TR 数据手册

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SC1101  
Asynchronous Voltage  
Mode PWM Controller  
POWER MANAGEMENT  
Features  
Description  
The SC1101 is a versatile, low-cost, voltage-mode PWM ‹ Low cost / small size  
controller designed for low output voltage DC/DC power  
supply applications. A simple, fixed-voltage buck  
regulator can be implemented using the SC1101 with a  
minimum of external components. Internal level shift and  
drive circuitry eliminates the need for an expensive  
p-channel, high-side switch. The small device footprint  
allows for compact circuit design.  
‹ Switch mode efficiency up to 95%  
‹ 1% reference voltage accuracy  
‹ Over current protection  
‹ 500mA output drive  
‹ SO-8 package  
SC1101 features include a temperature compensated  
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  
Applications  
‹ Pentium® P55 Core Supply  
‹ Low Cost Microprocessor Supplies  
‹ Peripheral Card Supplies  
differential voltage across an external resistor, or an ‹ Industrial Power Supplies  
appropriately sized PC board trace.  
‹ High Density DC/DC Conversion  
The SC1101 operates at a fixed frequency of 200kHz,  
providing an optimum compromise between efficiency,  
external component size, and cost.  
Typical Application Circuit  
Vout = 2V @ 10A  
+
L1  
4uH  
R5  
0.05  
Q1  
IRLR3103  
+5V  
R6  
76.8 *see note  
C11  
1.0  
C8  
330/2.5V  
C9  
330/2.5V  
C10  
330/2.5V  
C1  
1.0  
C2  
C3  
D2  
MBRD1035L  
R7  
127  
150/6.3V  
150/6.3V  
GND  
GND  
+12V  
R1  
10  
R2  
1k  
R3  
1k  
U1  
SC1101  
C6  
0.01  
R4  
2.2  
1
2
3
4
8
7
6
5
VCC  
GND  
FB  
CS(-)  
CS(+)  
PGND  
C4  
C5  
0.001  
0.1  
BST  
DH  
C7  
0.1  
* NOTE:  
R6 = R7 x (Vout/1.25 - 1) rounded to nearest 1%value  
1
www.semtech.com  
Revision: May 25, 2005  

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