OB3652 Datasheet | On-Bright

DESCRIPTION FEATURES OB3652x is primary side control offline LED - High precision Constant Current Regulation at lighting power switch with very low operation Universal AC input current which can achieve accurate LED current - Primary-side Sensing and Regulation Without for an isolated lighting application in a single stage TL431 and Opto-coupler converter. - Sense and supply without auxiliary winding It significantly simplifies the LED lighting system inductance design by eliminating the secondary side feedback - Low System Cost and High Efficiency ponents and the opto-coupler, and also the - Low operation current auxiliary winding inductance. A HV 600V power - Programmable CC Regulation switch is also integrated into the device. The LED - Built-in Primary winding inductance current can be adjusted externally by the sense pensation resistor Rs at CS pin and high precision constant - Built-in line pensation current regulation is realized. - Short Circuit Protection OB3652x offers prehensive protection - Open Loop Protection coverage with auto-recovery features including open loop protection, short circuit protection, cycle-by-cycle current limiting, built-in leading to edge blanking, VDD under voltage lockout (UVLO), latched over temperature protection (OTP), etc. tial OB3652x is offered in SOP-8 or DIP8 packages. - 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 en TYPICAL APPLICATION onfid ~ + VLED + CO NS ht c CS ig NC r VDD B SW GND GND Drain Drain On- OB3652x ©On-Bright Electronics Confidential -1- Datasheet OB_DOC_DS_3652XA4 OB3652x Series High Precision Offline LED Power Switch GENERAL INFORMATION Pin...