ACT4060A

Rev 1, 25-Jun-09

Innovative Power

TM

- 2 -

www.active-semi.com

Copyright © 2009 Active-Semi, Inc.

ORDERING INFORMATION

PART NUMBER

TEMPERATURE RANGE

PACKAGE

PINS

PACKING

ACT4060ASH

-40°C to 85°C

SOP-8

8

TUBE

ACT4060ASH-T

-40°C to 85°C

SOP-8

8

TAPE & REEL

PIN DESCRIPTIONS

PIN

NAME

DESCRIPTION

1

BS

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

Connect a 10nF capacitor between BS and SW.

2

IN

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

in the Application Information section.

3

SW

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

4

G

Ground.

5

FB

Feedback Input. The voltage at this pin is regulated to 1.293V. Connect to the

resistor divider between output and ground to set output voltage.

6

COMP

Compensation Pin. See Stability Compensation in the Application Information

section.

7

EN

Enable Input. When higher than 1.3V, this pin turns the IC on. When lower than

0.7V, this pin turns the IC off. Output voltage is discharged when the IC is off.

When left unconnected, EN is pulled up to 4.5V with a 2µA pull-up current.

8

N/C

Not Connected.

PIN CONFIGURATION

SOP-8

1

2

3

4

BS

IN

SW

G

N/C

EN

COMP

FB

ACT4060ASH

8

7

6

5