DP9127V - DP

DP9127V Non-isolated Quasi-Resonant Buck LED Power Switch

DP9127V is a highly integrated power switch with Quasi-Resonant Buck (QR-Buck) constant current (CC) control for LED lighting applications. DP9127V combines a 500V power MOSFET switch with a power controller in one chip. The IC also integrates high voltage startup/IC supply circuit and a novel transformer demagnetization circuit.

Features

 Integrated with 500V MOSFET
 No Auxiliary Winding Needed
 Quasi-Resonant for High Efficiency
 Built-in Thermal Foldback
 Built-in Charging Circuit for Fast Start-Up
 ±4% CC Regulation
 Very Low VDD Operation Current
 Built-in AC Line CC Compensation
 Build in Protections:
 LED Short Protection
 On-Chip Thermal Fold-back (OTP)
 Cycle-by-Cycle Current Limiting
 Leading Edge Blanking (LEB)
 Pin Floating Protection
 VDD UVLO
 Available with SOT23-3,SOP-8 and TO-92 Package APPLICATIONS
 LED Lighting TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION DP9127V is a highly integrated po.