SY22777AAC - Single Stage Buck PFC LED Driver


  • Power Factor>0.9
  • 600V MOSFET Integrated
  • Quasi-Resonant Operation
  • Thermal Fold Back
  • Low BOM Cost
  • RoHS Compliant and Halogen Free
  • Compact Package: SOT23-5

Typical Application


SY22777 is a single-stage Buck PFC driver for LED lighting applications.

SY22777 adopts the proprietary control architecture to achieve an accurate regulation of LED current, unity power factor. It drives the converter in Quasi-Resonant mode to achieve high efficiency.

SY22777 integrates 600V power FET inside to save driver space further.

SY22777 is available in SOT23-5 package.


  • LED Lighting