ACT337SH データシートの表示（PDF） - Active-Semi, Inc

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ACT337SH

High Performance ActivePSR™ Primary Switching Regulator

Active-Semi, Inc 

ACT337

Rev 2, 14-Nov-12

High Performance ActivePSRTM Primary Switching Regulator

FEATURES

• Ultra Low Standby Power < 30mW

• 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

• Complies with all Global Energy Efficiency

and CEC Average Efficiency Standards

• Adjustable Power from 7W to 12W

• Minimum External Components

• SOP-8 Package

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 ACT337 achieves excellent

regulation and transient response, yet requires less

than 30mW of standby power.

The ACT337 is optimized for compact size 7W to

12W charger applications. It is available in space-

saving 8 pin SOP-8 package.

Figure 1:

Simplified Application Circuit

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

Copyright © 2012 Active-Semi, Inc.

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