OB3652P Datasheet | On-Bright

DESCRIPTION OB3652P is a primary side control offline LED lighting controller with very low operation current which can achieve accurate LED current for an isolated lighting application in a single stage converter. It significantly simplifies the LED lighting system design by eliminating the secondary side feedback ponents and the opto-coupler, and also the auxiliary winding inductance. A HV 600V power switch is also integrated into the device. The LED current can be adjusted externally by the sense resistor Rs at CS pin and high precision constant current regulation is realized. OB3652P offers prehensive protection coverage with auto-recovery features including open loop protection, short circuit protection, cycle-by-cycle current limiting, built-in leading edge blanking, VDD under voltage lockout (UVLO), latched over temperature protection (OTP), etc. OB3652P is offered in DIP-8 package. FEATURES - High precision Constant Current Regulation at Universal AC input - Primary-side Sensing and Regulation Without TL431 and Opto-coupler - Sense and supply without auxiliary winding inductance - Low System Cost and High Efficiency - Low operation current - Programmable CC Regulation - Built-in Primary winding inductance pensation - Built-in line pensation - Short Circuit Protection - Open Loop Protection - Cycle-by-Cycle Current Limiting - Built-in Leading Edge Blanking (LEB) - VDD Under Voltage Lockout with Hysteresis - Latched over temperature protection (OTP) APPLICATIONS - LED lighting TYPICAL APPLICATION ~ + VLED + CO CS GND NC GND VDD Drain SW Drain OUTPUT POWER TABLE Product 230VAC±15% Open Frame 90-264VAC Open Frame OB3652PAP 18W 12.5W Notes: Maximum practical continuous power in an open frame design with sufficient drain pattern as a heat sink, at 50℃ ambient and 60℃ temperature rise. Higher output power is possible with extra added heat sink or air circulation to reduce thermal resistance. ©On-Bright Electronics Confidential...