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ACT337 PDF预览

ACT337

更新时间: 2024-10-26 08:15:11
品牌 Logo 应用领域
技领 - ACTIVE-SEMI 稳压器开关
页数 文件大小 规格书
3页 144K
描述
High Performance ActivePSR? Primary Switching Regulator

ACT337 数据手册

 浏览型号ACT337的Datasheet PDF文件第2页浏览型号ACT337的Datasheet PDF文件第3页 
®
ACT337  
Product Brief, 15-Apr-11  
High Performance ActivePSRTM Primary Switching Regulator  
utilizes Active-Semi’s proprietary primary-side  
feedback architecture to provide accurate constant  
FEATURES  
Ultra Low Standby Power < 30mW  
voltage, constant current (CV/CC) regulation  
without the need of an opto-coupler or reference  
device. Integrated line and primary inductance  
compensation circuitry provides accurate constant  
current operation despite wide variations in line  
voltage and primary inductance. Integrated output  
cord resistance compensation further enhances  
output accuracy. The ACT337 achieves excellent  
regulation and transient response, yet requires less  
than 30mW of standby power.  
Patented Primary Side Regulation  
Technology  
Suitable Operation Frequency up to 85kHZ  
Proprietary Fast Startup Circuit  
Integrated Line and Primary Inductance  
Compensation  
Integrated Programmable Output Cord  
Resistance Compensation  
The ACT337 is optimized for compact size 7W to  
12W charger applications. It is available in space-  
saving 8 pin SOP-8 package.  
Line Under-Voltage, Output Over-Voltage,  
Output Short-Circuit and Over-Temperature  
Protection  
Figure 1:  
Complies with all Global Energy Efficiency  
Simplified Application Circuit  
and CEC Average Efficiency Standards  
Adjustable Power from 7W to 12W  
Minimum External Components  
SOP-8 Package  
APPLICATIONS  
RCC Adapter Replacements  
Linear Adapter Replacements  
Standby and Auxiliary Supplies  
GENERAL DESCRIPTION  
The ACT337 belongs to the high performance  
patented ActivePSRTM Family of Universal-input  
AC/DC off-line controllers for battery charger and  
adapter applications. It is designed for flyback  
topology working in discontinuous conduction mode  
(DCM). The ACT337 meets all of the global energy  
efficiency regulations (CEC, European Blue Angel,  
and US Energy Star standards) while using very  
few external components.  
The ACT337 ensures safe operation with complete  
protection against all fault conditions. Built-in  
protection circuitry is provided for output short-  
circuit, output over-voltage, line under-voltage, and  
over temperature conditions.  
The ACT337 ActivePSRTM is optimized for high  
performance, cost-sensitive applications, and  
Innovative PowerTM  
- 1 -  
www.active-semi.com  
ActivePSRTM is a trademark of Active-Semi.  
Copyright © 2011 Active-Semi, Inc.  

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