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HV9921 Datasheet 3-pin Switch-mode Led Lamp Driver

Manufacturer: Supertex

Overview: Supertex inc. HV9921 3-Pin Switch-Mode LED Lamp Driver IC.

Datasheet Details

Part number HV9921
Manufacturer Supertex
File Size 469.25 KB
Description 3-Pin Switch-Mode LED Lamp Driver
Datasheet HV9921-Supertex.pdf

General Description

The HV9921 is a pulse width modulated (PWM) high-efficiency LED driver control IC.

It allows efficient operation of LED strings from voltage sources ranging up to 400VDC.

The HV9921 includes an internal high voltage switching MOSFET controlled with fixed off-time (TOFF) of approximately 10.5μs.

Key Features

  • Constant output current: 20mA.
  • Universal 85 - 265VAC operation.
  • Fixed off-time buck converter.
  • Internal 475V power MOSFET.

HV9921 Distributor