Hysteretic, Buck, High Brightness LED Driver With High-Side Current Sensing

The HV9919 is a PWM Controller IC designed to drive high brightness LEDs using a buck topology. It operates from an input voltage of 4.5 to 40VDC and employs hysteretic control with a high-side current sense resistor to set the constant output current. The operating frequency range CAN be set by selecting the proper inductor. Operation at high switching frequency is possible since the hysteretic control maintains accuracy even at high frequencies. This permits the use of small inductors and capacitors minimizing space and cost in the overall system. LED brightness control is achieved with PWM dimming from an Analog or PWM input signal. Unique PWM circuitry allows true constant color with a high dimming range. The dimming frequency is programmed using a single external capacitor. The HV9919 comes in a small, 8-lead DFN package and is ideal for industrial and general lighting applications. By Supertex, Inc.
Part Manufacturer Description Datasheet Samples
HV9919BK7-G Microchip Technology Inc LED DISPLAY DRIVER, PDSO8
HV9919 's PackagesHV9919 's pdf datasheet
HV9919K7-G DFN




HV9919 Pinout, Pinouts
HV9919 pinout,Pin out
This is one package pinout of HV9919,If you need more pinouts please download HV9919's pdf datasheet.

HV9919 Application circuits
HV9919 circuits
This is one application circuit of HV9919,If you need more circuits,please download HV9919's pdf datasheet.


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