Silergy SY5810
The SY5810 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.APPLICATIONS
Note: SY5810 Single Stage Flyback And PFC Controller With Primary Side Control For LED Lighting Preliminary datasheetGENERAL DESCRIPTION
Ordering Information SY5810 □(□□)□ Temperature Code Package Code Optional Spec Code Temperature Range: -40°C to 85°C Ordering Number Package type Note SY5810ABC SOT23-6 ----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 driver: 0.25A sourcing and 0.5A sinking
● Low start up current: 15µA typical
● Reliable short LED and Open LED protection
● Power factor >0.90 with single-stage conversion.
● Compact package: SOT23-6
APPLICATIONS
● LED lighting● Down light
● Tube lamp
● PAR lamp
● Bulb Typical
APPLICATIONS
Figure 1. Schematic Diagram SOT23-6 AN_SY5810 Rev0.1A Silergy Corp. Confidential- Prepared for Customer Use O...