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A4401 Key Features

  • Multiple output regulator
  • 7 to 40 V input supply
  • Low EMI conducted and radiated emissions
  • Adaptive quasi-resonant turn on/off control
  • Minimal number of external ponents
  • Enable input which can be driven with respect to the battery voltage

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A4401 Description

This device provides all the necessary control functions to provide the power rails for driving a vacuum fluorescent display (VFD) using minimal external ponents. The power supply is based on a quasi-resonant, discontinuous flyback converter, operating near the critical conduction boundary. A novel adaptive turn-on control scheme is used to optimize the turn-on and turn-off phase of the MOSFET, to reduce EMI...