SY5814A Description
The SY5814A is a single stage Buck PFC controller targeting at LED lighting applications. It drives the Buck converter in the quasi-resonant mode to achieve higher efficiency. It keeps the Buck converter in constant on time operation to achieve high power factor.
SY5814A Key Features
- Valley turn-on of the MOSFET to achieve low switching losses
- 0.3V 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
- pact package: SOT23-6
SY5814A Applications
- Valley turn-on of the MOSFET to achieve low switching losses
- 0.3V current sense reference voltage leads to a lower sense resistance thus a lower conduction loss