OB3636A is a flyback and buck controller with high power factor, low THD and high constant voltage (CV) precision. It can achieve low system cost for isolated and non-isolated applications.
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 comprehensive 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.
n High precision constant voltage regulation
n High PF
n Low THD
n Fast start-up
n Low system cost and high efficiency
n Quasi-resonant operation
n Short circuit protection
n Open circuit protection
n Cycle-by-cycle current limiting
n Built-in leading edge blanking (LEB)
n VDD under voltage lockout with hysteresis (UVLO)
n VDD over voltage protection
n Over temperature protection (OTP)
n Over load protection (OLP)
n Audio Noise Free
n LED lighting
FLYBACK TYPICAL APPLICATION
BUCK TYPICAL APPLICATION