SSP7786 is a compact, inductor-less, offline linear regulator. It steps down the AC line voltage to 5V, 3.3V and 2.7V by internal. At the same time, VOUT1 can provide a set of 0.66 × VOUT output voltage. It is a simple solution to provide a bias voltage to ICs in offline applications. SSP7786 integrates a 650V power MOSFET, startup control circuit, VDD voltage control circuit, AC signal synchronization detection circuit, low dropout regulator, etc. The chip integrated smart-control system uses AC line power only when necessary, thus minimizing device losses to achieve good efficiency, and effectively reduce the system standby. SSP7786 integrates complete protection functions with self-recovery function: VDD Under Voltage Protection, VDD Over Voltage Protection, output Over Load Protection, output Under Voltage Protection, Lightning Surge Protection and built-in Thermal Shutdown Protection.