EVK-ACT512US-T Datasheet, PDF (2/4 Pages) Active-Semi, Inc – ActiveQRTM Quasi-Resonant PWM Controller

ACT512
Product Brief, 18-Feb-14
ORDERING INFORMATION
PART NUMBER
ACT512US-T
TEMPERATURE RANGE
-40°C to 85°C
PACKAGE PINS
SOT23-6
6
PACKING
METHOD
TOP MARK
TUBE & REEL
FSHT
PIN CONFIGURATION
PIN DESCRIPTIONS
SOT23-6
ACT512US
PIN NAME
DESCRIPTION
1
CS
Current Sense Pin. Connect an external resistor (R_CS) between this pin and ground to set peak
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.
Innovative Power^TM
-2-
ActiveQR^TM is a trademark of Active-Semi.
www.active-semi.com
Copyright © 2014 Active-Semi, Inc.