Silergy SY22824B
The SY22824B is a constant voltage Transition-Mode boost controller with Power Factor Correction (PFC) function. It drives the Boost converter in the Quasi-Resonant mode for high efficiency and better EMI performance. It adopts special design to achieve quick start up and reliable protection for safety requirement.| Part No. | SY22824B |
|---|---|
| Datasheet | SY22824B Download |
| Manufacturer |  Silergy |
| Description | Single-Phase Transition-Mode PFC Controller |
| Buy | Stock & Price |
GENERAL DESCRIPTION
Constant ON Time control is applied to achieve high PF and low THD without multiplier. Ordering Information SY22824□(□□□) Package Code Optional Spec Code Ordering Number SY22824BABT Package type Note SOT23-6 ----FEATURES
● Valley Turn-on to Achieve Low Switching Losses● Frequency Reduce in Light Load
● Internal High Current MOSFET Driver: 70Ma Sourcing and 400mA Sinking
● MOSFET Over-Current Protection (OCP)
● Internal THD Optimization to Achieve Low THD
● Internal Transition Optimization
● Compact Package: SOT23-6
APPLICATIONS
● AC Adapter Front End● LED Drivers and Luminaries Typical
APPLICATIONS
Input BD DP DB LB CIN RST COUT External supply RA CA RU CVIN 5 VIN 6 DRV 4 FB 2 GND RGS QB RG 3 COMP 1 ISEN RC0 RD CC1 U1/SY22824B CC0 RB RS DS_SY22824B Rev.1.0A © 2023 Silergy Corp. Figure 1. Schematic Diagram Silergy Corp. Confidential- Prepared for Customer Use Only 1 All Rights Reserved. Pinout (top view) ISEN 1 GND 2 6 DRV 5 VIN SY22824B COMP 3 4 FB (SOT23-6) Top Mark: d9xyz (device code: d9, x=year code, y=week code, z= lot number code) Pin NameDESCRIPTION
1 ISEN Current limit and Valley detection pin.
