Download AP39303 Datasheet PDF
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AP39303 Description

The AP39303 is a highly integrated power switcher with a built-in Quasi-Resonant (QR) PWM controller and a 700V high performance power MOSFET. AP39303 is specially designed for offline power supply that requires ultra-low standby power, high-power density and prehensive protection. Coordinating with secondary side USBPD or quick charger controller to provide a Flyback charger solution.

AP39303 Key Features

  • Quasi-Resonant Operation under all Line and Load Condition
  • Peak Current Mode Control @ DCM
  • High-Voltage Startup
  • Built-In 700V High Performance Power MOSFET
  • Embedded VCC LDO to Guarantee Wide Range VCC_IN Voltage
  • Low VCC Charge Current Reduces Standby Power in Output
  • Adaptive Burst Mode Operation with Output Voltage
  • Adaptive Output Power Limit with Output Voltage
  • Non-Audible-Noise Quasi-Resonant Control
  • Soft Start during Startup Process