3-Pin Switch-Mode LED Lamp Driver IC

The HV9921 is a pulse width modulated (PWM) high- ef, ciency LED Driver control IC. It allows ef, cient operation of LED strings from voltage sources ranging up to 400VDC. The HV9921 includes an internal high voltage switching MOSFET controlled with , xed off-time (T ) of approximately 10.5s. OFF The LED string is driven at constant current, thus providing constant light output and enhanced reliability. The output current is internally , xed at 20mA for HV9921. The peak current control scheme provides good regulation of the output current throughout the universal AC line voltage range of 85 to 264VAC or DC input voltage of 20 to 400V. By Supertex, Inc.
HV9921 's PackagesHV9921 's pdf datasheet
HV9921N3-G TO-92
HV9921N8-G SOT-89
HV9921N3 TO-92
HV9921N8 SOT-89




HV9921 Pinout, Pinouts
HV9921 pinout,Pin out
This is one package pinout of HV9921,If you need more pinouts please download HV9921's pdf datasheet.

HV9921 Application circuits
HV9921 circuits
This is one application circuit of HV9921,If you need more circuits,please download HV9921's pdf datasheet.


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