LD7833

LD7833 2016/12/23 High Power Factor Primary Side Flyback LED Controller With TRIAC Dimming REV: 00 General Description The LD7833 is a primary side regulation Flyback controller with power factor for TRIAC dimmable LED driver. The LD7833 provides constant current (CC) operation requiring neither photo-coupler nor secondary control circuit. It minimizes the components counts in a tiny package. Those make it easy to design for costeffective applications. With high voltage start-up technology, high power factor and TM control, the start-up time and MOSFET switching losses could be minimized efficiently. With completed protection built in this IC, such as overvoltage protection (OVP), over-current protection (OCP) and short circuit protection (SCP), the device is capable to meet the safety requirements. Typical Application TRIAC Dimmer Features  High Voltage (700V) Startup Circuit  Transition Mode Operation  High Power Factor  Dimmable by TRIAC dimmer  VCC Over Voltage Pr...