ACT512

Rev 4, 13-Feb-14

- 2 -

www.active-semi.com

Copyright © 2014 Active-Semi, Inc.

Active-Semi Proprietary―For Authorized Recipients and Customers

ActiveQR

PIN CONFIGURATION

PIN DESCRIPTIONS

PART NUMBER

TEMPERATURE RANGE

PACKAGE

PINS

PACKING

METHOD

TOP MARK

ACT512US-T

-40°C to 85°C

SOT23-6

6

TUBE & REEL

FSHT

SOT23-6

ACT512US

ORDERING INFORMATION

PIN

NAME

DESCRIPTION

1

CS

current limit for the primary switch.

2

GND

Ground.

3

GATE

Gate Drive. Gate driver for the external MOSFET transistor.

4

VDD

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

5

VDET

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

detect zero-crossing points for valley turn on operation.

6

FB

Feedback Pin. Connect this pin to optocouplers’s collector for output regulation.