HV892DB1, Inductorless, Liquid Lens Driver Demo Board

Reference Design using part HV892K7-G by Microchip Technology

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HV892DB1 Image
HV892DB1 Schematic
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Manufacturer

Microchip Technology
  • Application Category
    Lighting
  • Product Type
    General Lamp Driver

For End Products

  • Cell Phone Camera
  • Personal Digital Assistant
  • Stationary Bar Code Reader
  • Web Camera

Description

  • The HV892DB1, liquid lens driver Demo Board is controlled via an I2C interface, is capable of driving capacitive loads of up to 200pF, and is compatible with 40 to 60 VRMS lenses. A charge pump boost converter integrated on-chip provides the high voltage necessary for driving the lens. No external inductors or diodes are needed. The board requires only two ceramic chip capacitors to complete a lens driver circuit. An H-bridge output stage provides AC drive to the lens, allowing the use of a single high voltage boost converter while providing alternating polarity to the lens. Controlled rising and falling edges on the drive waveform reduces EMI

Key Features

  • Input Voltage
    2.65 to 5.5 V
  • Output Voltage
    9.8 to 62.6 V
  • Number of Derived Elements
    1

Featured Parts (1)

Featured Parts
Part Number Manufacturer Type Description
HV892K7-G Microchip Technology Specialized Power ICs and Modules Liquid Lens Driver 10-Pin DFN EP T/R Buy

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