• Integrated 600V MOSFET
• Valley Turn-on of the MOSFET to Achieve Low Switching Losses
• Power Factor >0.90 with Single-stage conversion
• Low start up current: 15µA typical
• Quick start up <500ms
• Reliable short LED and Open LED protection
• Power factor >0.90 with single-stage conversion
• RoHS Compliant and Halogen Free
• Compact package: DIP8

The SY22778Y is a single stage Buck PFC controller targeting at LED lighting applications. It integrates a 600V MOSFET to decrease physical volume. It adopts the proprietary control architecture to achieve an accurate regulation of LED current, unity power factor, and quasi-resonant valley turn-on high efficiency operation. It adopts special design to achieve quick start up and reliable protection for safety requirement.

It integrates open/short LED protection and eliminates the need for opto-coupler, thus minimizing the component count and board size.