SM7385A is a highly-integrated, low start-up current, TM (Transition Mode), fixed on-time PFC control and PWM controller. These functions enable the LED driver to easily meet the accuracy average LED current and high power factor requirements. The integrated functions also include the LED short protection, over voltage protection, over load protection. The COMP pin controls the duty by connected an RC compensation network to ground and forming the closed loop feedback control.
The SM7385A improves the performance and reduces the cost of the LED driver. It is a 6-pin SOT-26 package.