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HV9921 Datasheet 3-pin Switch-mode Led Lamp Driver

Manufacturer: Microchip Technology

Overview: HV9921/HV9922/HV9923 3-Pin Switch-Mode LED Lamp Driver ICs.

General Description

HV9921/HV9922/HV9923 are pulse-width modulated (PWM), high-efficiency, LED driver control ICs.

They allow efficient operation of LED strings from voltage sources ranging up to 400VDC.

HV9921/22/23 include an internal high voltage switching MOSFET controlled with fixed off-time (TOFF) of approximately 10μs.

Key Features

  • Constant output current: - HV9921.
  • 20mA - HV9922.
  • 50mA - HV9923.
  • 30mA.
  • Universal 85 - 264VAC operation.
  • Fixed off-time buck converter.
  • Internal 475V power MOSFET.

HV9921 Distributor