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SC1104AISTRT

更新时间: 2024-09-20 13:13:15
品牌 Logo 应用领域
商升特 - SEMTECH 控制器
页数 文件大小 规格书
7页 130K
描述
Switching Controller, Voltage-mode, 0.7A, 300kHz Switching Freq-Max, PDSO8, ROHS COMPLIANT, MS-012AA, SOIC-8

SC1104AISTRT 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:SOIC
包装说明:SOP, SOP8,.25针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.65
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:14 V
最小输入电压:4.2 V标称输入电压:12 V
JESD-30 代码:R-PDSO-G8JESD-609代码:e3
长度:4.9 mm湿度敏感等级:1
功能数量:1端子数量:8
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:0.7 A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
峰值回流温度(摄氏度):260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:PUSH-PULL
最大切换频率:300 kHz温度等级:INDUSTRIAL
端子面层:MATTE TIN端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:3.9 mm
Base Number Matches:1

SC1104AISTRT 数据手册

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SC1104A/B  
Simple, Synchronous  
Voltage Mode PWM Controller  
PRELIMINARY  
POWER MANAGEMENT  
ꢀeatures  
Description  
The SC1104A/B is a versatile voltage-mode PWM con-  
troller designed for use in single ended DC/DC power  
supply applications. A simple, fixed frequency high effi-  
ciency buck regulator can be implemented using the  
SC1104A/B 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.  
u +5V or +12V operation  
u High efficiency (>90%)  
u 1% Reference voltage accuracy  
u Hiccup mode over current protection  
u Robust output drive  
u RDS(ON) Current sensing  
u Industrial temperature range  
u SO-8 package  
SC1104A/B features include temperature compensated  
voltage reference, triangle wave oscillator, current limit  
comparator and an externally compensated error  
amplifier. Current limit is implemented by sensing the  
Applications  
u Termination supplies  
voltage drop across the top ꢀET’s RDS(ON).  
.
u Low cost microprocessor supplies  
u Peripheral card supplies  
The SC1104A/B operates at a fixed frequency of 300/  
600 kHz, providing an optimum compromise between  
efficiency, external component size, and cost. 600kHz  
switching frequency is typically reserved for the 5V  
operation only.  
u Industrial power supplies  
u High density DC/DC conversion  
SC1104A/B has a thermal protection circuit, which is  
activated if the junction temperature exceeds 150°C.  
Typical Application Circuit  
Typical Distributed Power Supply  
R2  
10  
+
C3  
0.1  
C1  
220-680pF  
C5  
47/16V  
C4  
10.0  
C6  
47/16V  
C7  
47/16V  
Vin 5 to 12V  
D1  
MBRA130L  
U1  
_
SC1104A/B  
C2  
0.01  
R1  
2k  
R4  
2.32k  
1
2
3
4
8
7
6
5
COMP/SS  
SENSE  
VCC  
R3  
1.00k  
GND  
DL  
R5  
200-1k  
C8  
0.1-0.22  
PHASE  
BST  
DH  
R8  
10  
Q1  
Si4884DY  
C9  
0.1  
R6  
1-5.1  
L1  
1.5-3uH  
Q2  
Si4874DY  
+
R7  
1-5.1  
D2  
(opt)  
C10  
220/4V  
C11  
220/4V  
C12  
220/4V  
C13  
220/4V  
C14-17  
3.3V  
1.0  
_
ꢀigure 1  
1
www.semtech.com  
Revision 3, October 2001  

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