OB3636A Datasheet | On-Bright

DESCRIPTION OB3636A is a flyback controller with high power factor, low THD and high constant voltage (CV) precision. It can achieve low system cost for an isolated application by primary side control in a single stage converter. It significantly simplifies the CV system design by eliminating the secondary side feedback ponents and the opto-coupler. The proprietary CV control scheme is used and the system can achieve high power factor with constant on-time control scheme. Quasi-resonant (QR) operation and clamping frequency greatly improves the system efficiency. The advanced start-up technology is used to meet the fast start-up time requirement. OB3636A offers prehensive protection including open circuit protection, short circuit protection, over load protection, cycle-by-cycle current limiting, built-in leading edge blanking, VDD under voltage lockout (UVLO), etc. OB3636A is offered in SOT23-6 package. FEATURES - High precision constant voltage regulation - Primary-side sensing and regulation without TL431 and opto-coupler - High PF (>0.9) - Low THD (<10%) - Fast start-up - Low system cost and high efficiency - Quasi-resonant operation - Short circuit protection - Open circuit protection - Cycle-by-cycle current limiting - Built-in leading edge blanking (LEB) - VDD under voltage lockout with hysteresis (UVLO) - VDD over voltage protection - Over temperature protection (OTP) - Over load protection (OLP) - Audio Noise Free APPLICATIONS - LED lighting TYPICAL APPLICATION ~ AC + OB3636A FB CMP GND CS VDD GATE NS + NAUX M1 Vout+ Vout- ©On-Bright Electronics Confidential -1- Datasheet OB_DOC_DS_3636AA0 High PF, Low THD LED Lighting Controller GENERAL INFORMATION Pin Configuration The pin map is shown as below for...