SY5802数据手册集成电路（IC）的时钟缓冲器驱动器规格书PDF

描述 Description

The SY5802 is a single stage Flyback and PFC controller targeting at LED lighting applications with PWM/Analog dimming. 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.

特性 Features

·Primary side control eliminates the opto-coupler
·PWM or Analog Dimming
·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: 1A sourcing and 2A sinking
·Low start up current: 15uA typical
·Reliable short LED and Open LED protection
·Power factor >0.90 with single-stage conversion.(Analog dimming only)
·Compact package: SO8

应用 Application

·LED lighting
·Down light
·Tube lamp
·PAR lamp
·Bulb lamp