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                                      SY5802 - Single Stage Flyback PFC Controller With Primary Side Regulation and PWM/Analog dimming

                                      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

                                      Typical Application



                                      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.

                                      Applications

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

                                      湖北十一选五遗漏走势图

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