Download SY58203A1 Datasheet PDF
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SY58203A1 Key Features

  • Integrated 700V MOSFET
  • Primary side control eliminate to 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
  • Low start up current: 15µA typical
  • Reliable short LED and Open LED protection
  • Power factor >0.90 with single-stage conversion
  • Maximum frequency limit: 120kHz
  • pact package: SO8

SY58203A1 Description

The SY58203A1 is a single stage Flyback and PFC regulator targeting at LED lighting applications. It integrates a 700V MOSFET to decrease physical volume. 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.