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HV9925

Part Number	HV9925
Manufacturer	Supertex
Description	Programmable-Current LED Lamp Driver IC
Published	Jan 12, 2009
Detailed Description	HV9925 Initial Release Programmable-Current LED Lamp Driver IC with PWM Dimming Features  Programmable Output Current ...
Datasheet	HV9925 PDF File

Overview

...to 50mA  PWM Dimming / Enable  Universal 85-264VAC Operation  Fixed OFF-Time Buck Converter  Internal 500V Power MOSFET com  Over Temperature Protection with Hysteresis General Description The HV9925 is a pulse width modulated (PWM) high-efﬁciency LED driver control IC with PWM dimming capabilities.
It allows efﬁcient operation of high brightness LED strings from voltage sources ranging up to 400VDC.
The HV9925 includes an internal high-voltage switching MOSFET controlled with a ﬁxed off-time TOFF of approximately 10µs.
The LED string is driven at constant current, thus providing constant light output and enhanced reliability.
Selecting a value of a current sense resist...

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