HV9921
HV9921 is 3-Pin Switch-Mode LED Lamp Driver manufactured by Microchip Technology.
HV9921/HV9922/HV9923
3-Pin Switch-Mode LED Lamp Driver ICs
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 fixtures
Description
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 approximately 10μs. The LED string is driven at constant current, thus providing constant...
