OB3626x is highly integrated Buck regulator with advanced features to provide high efficiency control and high precision constant current output for LED lighting applications.
OB3626x features variable fade-in time(gradual on) control. Through charging an external capacitor connected to FT pin, the fade-in time could be programmed.
The proprietary CC control scheme is used and high precision constant current regulation is realized.
OB3626x 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), over temperature protection (OTP), thermal foldback etc.
OB3626x is offered in DIP-8 & SOP-7 package.
n High precision constant current regulation at universal AC input
n Programmable fade-in time
n Low system cost and high efficiency
n Quasi-Resonant operation
n Programmable CC regulation
n Thermal foldback function to control LED output current
n Insensitive to inductance and line voltage variation
n LED short circuit protection
n LED open loop protection
n Cycle-by-cycle current limiting
n Built-in leading edge blanking (LEB)
n VDD under voltage lockout with hysteresis
n Over temperature protection (OTP)
n LED lighting