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Supertex HV9910C Universal High Brightness LED Driver

Supertex HV9910C Universal High Brightness LED Driver

Supertex HV9910C Universal High Brightness LED Driver is an open loop, current mode, control LED driver IC. The HV9910C can be programmed to operate in either a constant frequency or constant off-time mode. Since the HV9910C operates in open loop current mode control, the controller achieves good output current regulation without the need for any loop compensation. Also, being an open loop controller, PWM dimming response is limited only by the rate of rise of the inductor current, enabling a very fast rise and fall times of the LED current. The HV9910C requires only three external components (apart from the power stage) to produce a controlled LED current making it an ideal solution for low cost LED drivers.


Features
  • Switch mode controller for single switch LED drivers
  • Enhanced drop-in replacement to the HV9910B
  • Open loop peak current controller
  • Internal 15 to 450V linear regulator
  • Constant frequency or constant off-time operation
  • Linear and PWM dimming capability
  • Requires few external components for operation
  • Over-temperature protection

Applications
  • DC/DC or AC/DC LED driver applications
  • RGB backlighting LED driver
  • Back lighting of flat panel displays
  • General purpose constant current source
  • Signage and decorative LED lighting
  • Chargers

Block Diagram
Block Diagram

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  • Supertex
  • Semiconductors|Integrated Circuits|Driver ICs