SY22679BABC (SY5830BABC)

Single Stage Flyback And PFC Controller With Primary Side Control For LED Lighting

SY22679BABC Single Stage Flyback And PFC Controller With Primary Side Control For LED Lighting Datasheet

Parameters
Features
Description

Part number	SY22679BABC
Description	PSR, QR, CC, Flyback PFC controller
Topology	Flyback
Dimming mode	Non-dimming
PF (>)	0.9
Input type	120VAC, 230VAC
Iout (max) (A)
Pout (max) (W)	100
Package	SOT23-6
Application	Flyback, non dimming, PFC

Primary Side Control Eliminates the Opto-coupler.
Valley Turn-on of the Primary MOSFET to Achieve Low Switching Loss
Power Factor >0.90 with Single-stage Conversion
Reliable Short LED and Open LED Protection
Quick Start up <500ms
Low Start up Current:15µA Typical
RoHS Compliant and Halogen Free
Package: SOT23-6

The SY22679B is a single stage Flyback and PFC controller targeting at LED lighting applications. 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.

Evaluation Board

Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board

EVB_SY22679BABC

EVB File

The EVB_SY22679BABC is intended for evaluating AC 85~264V input, 20~40V output Single Stage Flyback And PFC Controller With Primary Side Control For LED Lighting

Technical Documentation

Title	Date
Silergy_Catalog_Q2_2026	2026-06-12