ACT4012ASH datasheet(1/10 Pages) ACTIVE-SEMI

部件名	ACT4012ASH

功能描述	Wide Input 1.5A Step Down Converter

PDF	10 Pages

Scroll/Zoom	100%

制造商	ACTIVE-SEMI [Active-Semi, Inc]

网页	http://www.active-semi.com

标志

1 / 10 page

Innovative Power

TM

- 1 -

www.active-semi.com

FEATURES

• 1.5A Output Current

• Up to 94% Efficiency

• Up to 20V Input Range

• 10µA Shutdown Supply Current

• 420kHz Switching Frequency

• Adjustable Output Voltage

• Cycle-by-Cycle Current Limit Protection

• Thermal Shutdown Protection

• Frequency Foldback at Short Circuit

• Stability with Wide Range of Capacitors,

Including Low ESR Ceramic Capacitors

• SOP-8 Package

APPLICATIONS

• TFT LCD Monitors

• Portable DVDs

• Car-Powered or Battery-Powered Equipments

• S-Top Boxes

• Telecom Power Supplies

• DSL and Cable Modems and Routers

• Termination Supplies

GENERAL DESCRIPTION

The ACT4012A is a current-mode step-down

DC/DC converter that generates up to 1.5A output

420kHz switching frequency. The device utilizes

Active-Semi’s proprietary ISOBCD20 process for

operation with input voltages up to 20V.

Consuming only 10µA in shutdown mode, the

ACT4012A is highly efficient with peak efficiency at

94% when in operation. Protection features include

cycle-by-cycle current limit, thermal shutdown, and

frequency foldback at short circuit.

The ACT4012A is available in a SOP-8 package

and requires very few external devices for opera-

tion.

TYPICAL APPLICATION CIRCUIT

ACT4012A

Rev0, 16-May-08

Wide Input 1.5A Step Down Converter

ACT4012A

BS

IN

EN

COMP

FB

SW

G

ENABLE

12V

+

5V/1.5A

VIN

类似零件编号 - ACT4012ASH

制造商	部件名	数据表	功能描述
Active-Semi, Inc	ACT4012ASH	345Kb / 10P	Wide Input 1.5A Step Down Converter Rev PrA, 21-Nov-07
Active-Semi, Inc	ACT4012ASH-T	345Kb / 10P	Wide Input 1.5A Step Down Converter Rev PrA, 21-Nov-07

More results

类似说明 - ACT4012ASH

制造商	部件名	数据表	功能描述
Active-Semi, Inc	ACT4070	590Kb / 10P	Wide Input 3A Step Down Converter Rev 0, 12/2006
	ACT4012A	345Kb / 10P	Wide Input 1.5A Step Down Converter Rev PrA, 21-Nov-07
	ACT4060	355Kb / 9P	Wide Input 2A Step Down Converter Rev8, 24-Jul-07
	ACT4075	704Kb / 10P	Wide Input 2.5A Step Down Converter Rev PrA, 13-Aug-07
FOSLINK SEMICONDUCTOR C...	FSP3128	361Kb / 10P	WIDE INPUT 3A STEP-DOWN CONVERTER
Active-Semi, Inc	ACT4060A	259Kb / 11P	Wide Input 2A Step Down Converter Rev 0, 28-Apr-09
Champion Microelectroni...	CM2500	223Kb / 11P	WIDE INPUT 2A STEP DOWN CONVERTER
Active-Semi, Inc	ACT4060A_0906	257Kb / 12P	Wide Input 2A Step Down Converter Rev 1, 25-Jun-09
	ACT4070	388Kb / 11P	Wide Input 3A Step Down Converter Rev 2, 16-Sep-11
	ACT4070B	303Kb / 9P	Wide Input 3A Step Down Converter Rev 0, 23-Apr-12