Innovative Power

TM

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www.active-semi.com

Copyright © 2011 Active-Semi, Inc.

ActivePSR

High Performance ActivePSR

FEATURES

Technology

Load

Compensation

Resistance Compensation

Output Short-Circuit and Over-Temperature

Protection

and CEC Average Efficiency Standards

12W

APPLICATIONS

GENERAL DESCRIPTION

The ACT365 belongs to the high performance

AC/DC off-line controllers for adapter applications.

It is designed for flyback topology working in

discontinuous

conduction

mode

(DCM).

The

ACT365 meets all of the global energy efficiency

regulations (CEC, European Blue Angel, and US

Energy Star standards) while using very few

external components.

The ACT365 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.

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 ACT365 achieves excellent

regulation and transient response, yet requires less

than 150mW of standby power.

The ACT365 is optimized for compact size 6W to

12W adapter applications. It is available in SOP-8

package.

Figure 1:

Simplified Application Circuit

ACT365

PART

NUMBER

85-265VAC

TYPICAL

APPLICATION

Po MAX

ACT365SH-T

(SOP-8)

5V/2.1A

12W

Table 1:

Output Power Table

Product Brief, 15-Apr-11

®