ACT337

Rev 2, 14-Nov-12

Innovative Power

TM

- 2 -

www.active-semi.com

Copyright © 2012 Active-Semi, Inc.

PIN CONFIGURATION

PIN DESCRIPTIONS

PART NUMBER

TEMPERATURE RANGE

PACKAGE

PINS

PACKING

METHOD

TOP MARK

ACT337SH-T

-40°C to 85°C

SOP-8

8

TAPE & REEL

ACT337SH

PIN

NAME

DESCRIPTION

SOP-8

1

SW

Switch Drive. Switch node for the external NPN transistor. Connect this pin to the external

power NPN’s emitter. This pin also supplies current to VDD during startup.

2,4,7

GND

Ground(2,4 and 7 pin must be connected together).

8

BD

Base Drive. Base driver for the external NPN transistor.

6

VDD

Power Supply. This pin provides bias power for the IC during startup and steady state

operation.

5

FB

Feedback Pin. Connect this pin to a resistor divider network from the auxiliary winding.

3

CS

peak current limit for the primary switch. The peak current limit is set by (0.396V × 0.9) /

ORDERING INFORMATION

SOP-8

ACT337SH

Rev 2, 14-Nov-12