HV9921 Datasheet (Microchip) - 3-Pin Switch-Mode LED Lamp Driver

HV9921, 3-Pin Switch-Mode LED Lamp Driver

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 approximatel

HV9921 Features

* Constant output current: - HV9921

* 20mA - HV9922

* 50mA - HV9923

* 30mA

* Universal 85 - 264VAC operation

* Fixed off-time buck converter

* Internal 475V power MOSFET Applications

* Decorative lighting

* Low power lighting fi