OB3613

OB3613 High PF Non-Isolated Buck LED Lighting Controller GENERAL DESCRIPTION OB3613 is a high power factor, highly integrated buck regulator with advanced features to provide high efficiency control and high precision constant current output for LED lighting applications. The proprietary CC control scheme is used and the system can achieve high power factor with constant on-time control scheme. OB3613 offers comprehensive protection coverage with auto-recovery features including LED open loop protection, LED short circuit protection, cycle-by-cycle current limiting, built-in leading edge blanking, VDD under voltage lockout (UVLO), etc. OB3613 is offered in SOT23-6 package. FEATURES  Buck topology with high power factor  High precision constant current regulation at universal AC input  Low system cost and high efficiency  Quasi-Resonant operation  Programmable CC regulation  LED short circuit protection  LED open loop protection  Cycle-by-cycle current limiting  Built-in leading edge blanking (LEB)  VDD under voltage lockout with hysteresis  VDD over voltage protection  Over temperature protection (OTP) APPLICATIONS  LED lighting TYPICAL APPLICATION On-Bright confidential to ©On-Bright Electronics Confidential -1- Preliminary Datasheet OB_DOC_DS_361300 OB3613 High PF Non-Isolated Buck LED Lighting Controller GENERAL INFORMATION Pin Configuration The pin map is shown as below for SOT23-6. FB 1 6 COMP GND 2 5 CS VDD 3 4 GATE Ordering Information Pa...