SY22657FAC

Single Stage buck-boost and PFC Regulator for LED Dimming application

SY22657FAC Single Stage buck-boost and PFC Regulator for LED Dimming application Datasheet

Parameters
Features
Description

Part Number	SY22657FAC
Description	PFC, CC, Flyback, PWM Dimming, Int. MOS 600V/3.8Ω
Package	SO8
Io_max (A)	0.3
Input Type	120Vac,230Vac
Po_max (W)	12
PF (>)	0.9
Application	AC Buck-Boost PWM Dim

Integreated 600V MOSFET
5%~100% Dimming Range
Compatible with 500Hz ~5kHz PWM
Fast Start up, <500ms
Valley Turn-on of the Primary MOSFET to Achieve Low Switching Losses
Power Factor >0.90
Reliable Short LED and Open LED Protection
RoHS Compliant and Halogen Free
Compact Package: SO8

The SY22657 is a single stage buck-boost and PFC Regulator targeting at LED lighting application with analog dimming, which can achieve up to 5% dimming level, high precision for all loading range.

It adopts the proprietary control architecture to achieve an accurate regulation of LED current and Quasi-Resonant valley turn-on high efficiency operation. Proprietary self-bias technique saves the bias supply and reduces the startup time. It keeps the converter in constant on time operation to achieve high power factor.

Reliable short/open LED protection is integrated.