SY5803 - Single stage Buck-Boost PFC controller-Silergy Corp._

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SY5803 - Single stage Buck-Boost PFC controller

MOQ ： piece

Lead Time ： Days

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Product details

Supply Ability

Warranty(Year)：1 Year

Product Specifications

Product Description

Features

Valley turn-on of the MOSFET to achieve low switching losses
Aux-winding for ZCS detection and bias current optional
0.3V current sense reference voltage leads to a lower sense resistance thus a lower conduction loss
Internal high current MOSFET driver: 1A sourcing and 2A sinking
Low start up current: 15μA typical
Reliable short LED and Open LED protection
Power factor >0.90 with single-stage conversion
Compact package: SO8

Typical Application

Description

The SY5803 is a single stage Buck-Boost PFC controller targeting at LED lighting applications. It drives the Buck-Boost converter in the quasi-resonant mode to achieve higher efficiency. It keeps the Buck-Boost converter in constant on time operation to achieve high power factor.