ACT334_12 datasheet(1/11 Pages) ACTIVE-SEMI

Teilenummer	ACT334

Bauteilbeschribung	High Performance ActivePSR Primary Switching Regulator

PDF	11 Pages

Scroll/Zoom	100%

Hersteller	ACTIVE-SEMI [Active-Semi, Inc]

Direct Link	http://www.active-semi.com

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Innovative Power

TM

- 1 -

www.active-semi.com

High Performance ActivePSR

TM 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 2W to 6W

• Minimum External Components

• Tiny SOT23-6 Package

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 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 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

over temperature conditions.

The ACT334 ActivePSRTM is optimized for high

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.

The ACT334 is optimized for compact size 2W to

6W charger applications. It is available in space-

saving 6 pin SOT23-6 package.

Figure 1:

Simplified Application Circuit

ACT334

Rev 2, 14-Nov-12

Ähnliche Beschreibung - ACT334_12

Hersteller	Teilenummer	Datenblatt	Bauteilbeschribung
Active-Semi, Inc	ACT334	103Kb / 3P	High Performance ActivePSR??Primary Switching Regulator 15-Apr-11
	ACT336	108Kb / 3P	High Performance ActivePSR??Primary Switching Regulator 15-Apr-11
	ACT337	149Kb / 3P	High Performance ActivePSR??Primary Switching Regulator 15-Apr-11
	ACT361	83Kb / 3P	High Performance ActivePSR??Primary Switching Regulator 15-Apr-11
	ACT364	114Kb / 3P	High Performance ActivePSR??Primary Switching Regulator 15-Apr-11
	ACT365	134Kb / 3P	High Performance ActivePSR??Primary Switching Regulator 15-Apr-11
	ACT337	402Kb / 11P	High Performance ActivePSR Primary Switching Regulator Rev 2, 14-Nov-12
	ACT361	330Kb / 13P	High Performance ActivePSR Primary Switching Regulator Rev 8, 14-Nov-12
	ACT364	274Kb / 11P	High Performance ActivePSR Primary Switching Regulator Rev 4, 14-Nov-12
	ACT365	266Kb / 11P	High Performance ActivePSR Primary Switching Regulator Rev 1, 14-Nov-12

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ACT334 Datenblatt(PDF) 1 Page - Active-Semi, Inc

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Ähnliche Teilenummer - ACT334_12

Ähnliche Beschreibung - ACT334_12

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