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SC4525DSETRT PDF预览

SC4525DSETRT

更新时间: 2024-11-19 09:33:23
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
21页 735K
描述
18V, 3A, 350kHz Step-Down Switching Regulator

SC4525DSETRT 技术参数

是否Rohs认证:符合生命周期:Obsolete
零件包装代码:SOIC包装说明:HALOGEN FREE AND ROHS COMPLIANT, MS-012BA, SOIC-8
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.69Is Samacsys:N
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:18 V
最小输入电压:3 V标称输入电压:12 V
JESD-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:105 °C最低工作温度:-40 °C
最大输出电流:6.6 A封装主体材料:PLASTIC/EPOXY
封装代码:HSOP封装等效代码:SOP8,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, HEAT SINK/SLUG
峰值回流温度(摄氏度):NOT SPECIFIED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:BUCK
最大切换频率:425 kHz温度等级:INDUSTRIAL
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 mmBase Number Matches:1

SC4525DSETRT 数据手册

 浏览型号SC4525DSETRT的Datasheet PDF文件第2页浏览型号SC4525DSETRT的Datasheet PDF文件第3页浏览型号SC4525DSETRT的Datasheet PDF文件第4页浏览型号SC4525DSETRT的Datasheet PDF文件第5页浏览型号SC4525DSETRT的Datasheet PDF文件第6页浏览型号SC4525DSETRT的Datasheet PDF文件第7页 
SC4525D  
18V, 3A, 350kHz Step-Down  
Switching Regulator  
POWER MANAGEMENT  
Features  
Description  
Input range: 3V to 18V  
3A Output Current  
The SC4525D is a 350kHz constant frequency peak  
current-mode step-down switching regulator capable of  
producing 3A output current from an input ranging from  
3V to 18V. The SC4525D is suitable for next generation  
XDSL modems, high-definition TVs and various point of  
load applications.  
350kHz Fixed Switching Frequency  
Precision 1V Feedback Voltage  
Peak Current-Mode Control  
Cycle-by-Cycle Current Limiting  
Hiccup Overload Protection with Frequency Foldback  
Soft-Start and Enable  
Thermal Shutdown  
Thermally Enhanced 8-pin SOIC Package  
Fully RoHS and WEEE compliant  
Peak current-mode PWM control employed in the  
SC4525Dachievesfasttransientresponsewithsimpleloop  
compensation. Cycle-by-cycle current limiting and hiccup  
overload protection reduces power dissipation during  
output overload. Soft-start function reduces input start-  
up current and prevents the output from overshooting  
during power-up.  
Applications  
The SC4525D is available in SOIC-8 EDP package.  
XDSL and Cable Modems  
Set Top Boxes  
Point of Load Applications  
CPE Equipment  
DSP Power Supplies  
LCD and Plasma TVs  
Typical Application Circuit  
Efficiency  
D1  
90  
10 V16V  
V
IN  
85  
1N 4148  
C4  
10mF  
C1  
0.33 mF  
L1  
VIN =12V  
80  
75  
70  
65  
60  
55  
50  
45  
40  
BST  
SW  
IN  
OUT  
10mH  
5V/3A  
R4  
SC4525D  
SS/EN  
COMP  
33.2k  
FB  
GND  
RSET  
C7  
D2  
20BQ030  
R6  
8.25k  
C2  
47mF  
R5  
60.4k  
R7  
C8  
pF  
11.5k  
22 nF  
47  
C5  
2.2nF  
L1 : Coiltronics CD1-100  
C2 : Murata GRM31CR60J 476M  
C4 : Murata GRM31CR61E106K  
0
0.5  
1
1.5  
2
2.5  
3
Load Current (A)  
Figure 1. 350kHz 10V -16V to 5V/3A Step-down Converter  
Jan. 13, 2011  
1
www.semtech.com  

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