Datasheet > ACT334

ACT334

更新时间： 2024-11-17 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	99K
描述
High Performance ActivePSR? Primary Switching Regulator

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ACT334 数据手册

ACT334

Product Brief, 15-Apr-11

High Performance ActivePSR^TMPrimary Switching Regulator

over temperature conditions.

The ACT334 ActivePSR^TMis optimized for high

FEATURES

• Ultra Low Standby Power < 30mW

performance, cost-sensitive applications, and

utilizes Active-Semi’s proprietary primary-side

feedback architecture to provide accurate constant

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 ACT334 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

• Line Under-Voltage, Output Over-Voltage,

Output Short-Circuit and Over-Temperature

Protection

The ACT334 is optimized for compact size 2W to

6W charger applications. It is available in space-

saving 6 pin SOT23-6 package.

• Complies with all Global Energy Efficiency

and CEC Average Efficiency Standards

• Adjustable Power from 2W to 6W

• Minimum External Components

• Tiny SOT23-6 Package

Figure 1:

Simplified Application Circuit

APPLICATIONS

• Chargers for Cell Phones, PDAs, MP3,

Portable Media Players, DSCs, and Other

Portable Devices and Appliances

• RCC Adapter Replacements

• Linear Adapter Replacements

• Standby and Auxiliary Supplies

GENERAL DESCRIPTION

The ACT334 belongs to the high performance

patented ActivePSR^TMFamily 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 ACT334 meets all of the global energy

efficiency regulations (CEC, European Blue Angel,

and US Energy Star standards) while using very

few external components.

The ACT334 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

Innovative Power^TM

- 1 -

www.active-semi.com

ActivePSR^TMis a trademark of Active-Semi.

12 3

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与ACT334相关器件

型号	品牌	获取价格	描述	数据表
ACT334_12	ACTIVE-SEMI	获取价格	High Performance ActivePSR Primary Switching Regulator
ACT334US-T	ACTIVE-SEMI	获取价格	High Performance ActivePSR? Primary Switching Regulator
ACT336	ACTIVE-SEMI	获取价格	High Performance ActivePSR? Primary Switching Regulator
ACT336SH-T	ACTIVE-SEMI	获取价格	High Performance ActivePSR? Primary Switching Regulator
ACT337	ACTIVE-SEMI	获取价格	High Performance ActivePSR? Primary Switching Regulator
ACT337_12	ACTIVE-SEMI	获取价格	High Performance ActivePSR Primary Switching Regulator
ACT337SH-T	ACTIVE-SEMI	获取价格	High Performance ActivePSR? Primary Switching Regulator
ACT3492	AEROFLEX	获取价格	MIL-STD-1553B Remote Terminal, BUS Controller, or Passive Monitor Hybrid with Status Word
ACT3492SERIES	AEROFLEX	获取价格	MIL-STD-1553B Remote Terminal. BUS Controller. or Passive Monitor Hybrid with Status Word
ACT355	ETC	获取价格

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