HV9931 Datasheet (Supertex) - UNITY POWER FACTOR LED LAMP DRIVER

HV9931, UNITY POWER FACTOR LED LAMP DRIVER

The HV9931 is a ﬁxed frequency PWM controller IC designed to control an LED lamp driver using a single-stage PFC buckboost-buck topology.

It can achieve a unity power factor and a very high step-down ratio that enables driving a single high-brightness LED from the 85-264VAC input without a need for

HV9931 Features

* Constant Output Current Large Step-Down Ratio Unity Power Factor Low Input Current Harmonic Distortion Fixed Frequency or Fixed Off-Time Operation Internal 450V Linear Regulator Input and output current sensing www.DataSheet4U.com Input Current limit Enable, PWM and Phase Dimming General Descriptio