• Integrated 700V MOSFET
• Primary side control eliminate to the opto-coupler.
• Valley turn-on of the primary MOSFET to achieve low switching losses
• Quick start up <500ms
• Low start up current: 17μA typical
• Reliable short LED and Open LED protection
• Power factor >0.90 with single-stage conversion
• RoHS Compliant and Halogen Free
• Compact package: SO8

The SY22776Y is a single stage Flyback and PFC Regulator targeting at LED lighting applications. It integrates a 700V MOSFET to decrease physical volume. It is a primary side controller without applying any secondary feedback circuit for low cost, and drives the Flyback converter in the quasi-resonant mode to achieve higher efficiency. It keeps the Flyback converter in constant on time operation to achieve high power factor. It adopts special design to achieve quick start up and reliable protection for safety requirement.