SY5800A Datasheet - Silergy

SY5800A Single Stage Flyback And PFC Controller

The SY5800A 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 Flybac.

SY5800A Features

* Primary side control eliminates the opto-coupler.

* Valley turn-on of the primary MOSFET to achieve low switching losses

* 0.3V primary current sense reference voltage leads to a lower sense resistance thus a lower conduction loss.

* Internal high current MOSFET dri

SY5800A-Silergy.pdf