U6335BS with SOP-7 is an AC-DC Controller & Regulator, RoHS compliant, manufactured by UNI-SEMI. This is a monolithic integrated circuit that features a fixed frequency current-mode PWM controller with an internal multiplier for improved regulation accuracy. This device also includes features such as a sleep mode for reducing power consumption, an enable pin for shutdown, and an undershoot protection circuit. This device is suitable for AC/DC offline converters requiring high efficiency, low stand-by power, and low cost.