ACT4072SH Ver la hoja de datos (PDF) - Active-Semi, Inc

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Lista de partido

ACT4072SH

Wide Input 2A Step Down Converter

Active-Semi, Inc 

Active-Semi

ORDERING INFORMATION

PART NUMBER

ACT4072SH

ACT4072SH-T

TEMPERATURE RANGE

-40°C to 85°C

-40°C to 85°C

PIN CONFIGURATION

ACT4072

Rev2, 27-May-08

PACKAGE

SOP-8

SOP-8

PINS

8

8

PACKING

TUBE

TAPE & REEL

BS 1

8 N/C

IN 2

SW 3

ACT4072SH

7 EN

6 COMP

G4

5 FB

SOP-8

PIN DESCRIPTIONS

PIN

NUMBER

1

2

3

4

5

6

7

8

PIN NAME

PIN DESCRIPTION

BS

IN

SW

G

FB

COMP

EN

N/C

Bootstrap. This pin acts as the positive rail for the high-side switch’s gate driver. Con-

nect a 10nF between this pin and SW.

Input Supply. Bypass this pin to G with a low ESR capacitor. See Input Capacitor in Ap-

plication Information section.

Switch Output. Connect this pin to the switching end of the inductor.

Ground.

Feedback Input. The voltage at this pin is regulated to 1.222V. Connect to the resistor

divider between the output and ground to set output voltage.

Compensation Pin. See Compensation Techniques in Application Information section.

Enable Input. Drive higher than 1.3V or leave unconnected to enable the IC. Drive lower

than 0.7V to disable the IC. When disabled, the IC is in 6µA low current shutdown mode

and the output is discharged through the Low-Side Power Switch. This pin has a small

internal pull up current to a high level voltage when pin is not connected.

Not Connected.

Innovative PowerTM

-2-

www.active-semi.com

Copyright © 2008 Active-Semi, Inc.

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