HV9921 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.
HV9921 Key Features
- Constant output current
- HV9921
- HV9922
- HV9923
- Universal 85
- 264VAC operation
- Fixed off-time buck converter
- Internal 475V power MOSFET