SY22774FAC

Flyback Regulator For LED Lighting

SY22774FAC Flyback Regulator For LED Lighting Datasheet

Parameters
Features
Description

Part Number	SY22774FAC
Description	Self-Bias, QR, Buck, 4-Drain SO8, Int. comp. accurate OVP,650V/10Ω
Package	SO8
Io_max (A)	NA
Input Type	230Vac
Po_max (W)	10
PF (>)	0.9
Application	AC Flyback non-dim

Integrated 650V MOSFET
Quasi-Resonant (QR) Mode to Achieve Low Switching Losses
No Opto-coupler or Auxiliary Winding for Feedback in the Proprietary Floating Switch Configuration
Reliable Short LED and Open LED Protection
Thermal Foldback Function
Power Factor>0.9 with Internal Loop Compensation
Maximum Output Power : 10W
RoHS Compliant and Halogen Free
Compact Package: SO8

SY22774 is a single stage Flyback PFC regulator targeting at LED lighting applications.

SY22774 integrates a 650V MOSFET to decrease physical volume. It adopts the proprietary control architecture to achieve an accurate regulation of LED current, unity power factor.Quasi-Resonant valley turn-on for high efficiency operation. Proprietary self-bias technique saves the bias supply and reduces the start up time.

SY22774 integrates open/short LED protection and eliminates the need for opto-coupler or auxiliary winding (in floating switch application), thus minimizing the component count and board size.