ACT337

Product Brief, 15-Apr-11

Innovative Power

TM

- 2 -

www.active-semi.com

Copyright © 2011 Active-Semi, Inc.

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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

G

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

ACT337

Product Brief, 15-Apr-11

®