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AP3983B - HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER

General Description

The AP3983B/C/D are series of high frequency power switcher for power supplies with better conversion efficiency, better voltage & current accuracy, and improved protection functions.

Key Features

  • Primary Side Control for Eliminating Opto-coupler.
  • Better Transient Characteristics.
  • Built-in N Channel MOSFET with 650 BVDSS.
  • Low Start-up Current: 0.2A (Typ. ).
  • Internal Output Cable Voltage Drop Compensation.
  • Hiccup Function to Improve Short Circuit Protection.
  • Better Over Voltage Protection.
  • Better Over Temperature Protection.
  • Low Total Cost Solution.
  • Output Power Range (Note 1): AP3983B for 6W Adapter AP3983C (SO-7) for 7.5W AP3983C (PDIP-7.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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AP3983B/C/D HIGH FREQUENCY PRIMARY SIDE POWER SWITCHER FOR OFF-LINE SMPS Description Pin Assignments The AP3983B/C/D are series of high frequency power switcher for power supplies with better conversion efficiency, better voltage & current accuracy, and improved protection functions. Typical applications include charger, adapter for ADSL, home appliance power supply, LED lighting power supply and PC auxiliary power supplies. The AP3983B/C/D with built in MOSFET, regulates the output voltage and current in the primary side by piece-wise Pulse Frequency Modulation (p-PFM) in discontinuous conduction mode (DCM).