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SC4525ESETRT

更新时间: 2024-11-23 21:11:39
品牌 Logo 应用领域
商升特 - SEMTECH 开关
页数 文件大小 规格书
23页 913K
描述
Switching Regulator,

SC4525ESETRT 技术参数

是否Rohs认证: 符合生命周期:Active
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:1.68
模拟集成电路 - 其他类型:SWITCHING REGULATOR峰值回流温度(摄氏度):NOT SPECIFIED
处于峰值回流温度下的最长时间:NOT SPECIFIEDBase Number Matches:1

SC4525ESETRT 数据手册

 浏览型号SC4525ESETRT的Datasheet PDF文件第2页浏览型号SC4525ESETRT的Datasheet PDF文件第3页浏览型号SC4525ESETRT的Datasheet PDF文件第4页浏览型号SC4525ESETRT的Datasheet PDF文件第5页浏览型号SC4525ESETRT的Datasheet PDF文件第6页浏览型号SC4525ESETRT的Datasheet PDF文件第7页 
SC4525E  
28V 3A Step-Down Switching Regulator  
POWER MANAGEMENT  
Features  
Description  
Wide Input Voltage Range: 3V to 28V  
3A Output Current  
200kHz to 2MHz Programmable Frequency  
Precision ꢀV Feedback Voltage  
Peak Current-Mode Control  
Cycle-by-Cycle Current Limiting  
Hiccup Overload Protection with Frequency Foldback  
Soft-Start and Enable  
The SC4525E is a constant frequency peak current-mode  
step-down switching regulator capable of producing 3A  
output current from an input ranging from 3V to 28V. The  
switching frequency of the SC4525E can be programmed  
up to 2MHz for component miniaturization or it can be  
set at lower frequencies to accommodate high step-down  
ratios. The SC4525E is suitable for next generation XDSL  
modems, high-definition TVs and various point of load  
applications.  
Thermal Shutdown  
Thermally Enhanced 8-pin SOIC Package  
Fully RoHS and WEEE Compliant  
Peak current-mode PWM control employed in the  
SC4525E achieves fast transient response with simple loop  
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  
XDSL and Cable Modems  
Set Top Boxes  
Point of Load Applications  
CPE Equipment  
DSP Power Supplies  
LCD and Plasma TVs  
Automotive Car Audio  
The SC4525E is available in SOIC-8 EDP package.  
Typical Application Circuit  
Efficiency  
90  
D 1  
10V – 28V  
V
IN  
1N4148  
C4  
4.7mF  
C 1  
0.33 mF  
L1  
80  
V
IN = 24V  
BST  
SW  
IN  
V
IN = 12V  
O UT  
5.2mH  
5V/3A  
70  
60  
50  
40  
R 4  
SC4525E  
SS/EN  
33.2k  
FB  
CO M P  
RO SC  
R5  
G ND  
C7  
D2  
20BQ030  
R 6  
8.25k  
C 2  
10 mFX3  
R7  
12.7k  
C8  
22pF  
15.8k  
22nF  
C5  
2.2nF  
0.0  
0.5  
1.0  
1.5  
2.0  
2.5  
3.0  
L1: Coiltronics CD 1- 5R 2  
C 2: M urata G RM 31CR 60J106K  
C4: M urata G RM 32ER71H475K  
Load Current (A)  
Figure 1. 1MHz 10V -28V to 5V/3A Step-down Converter  
Rev. 2.ꢀ  
© 20ꢀ3 Semtech Corporation  

SC4525ESETRT 替代型号

型号 品牌 替代类型 描述 数据表
SC4525CSETRT SEMTECH

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