ROHM Semiconductor Bi-Directional VCM Drivers for Auto Focus

ROHM Semiconductor Bi-Directional VCM Drivers for Auto Focus are intended to drive bi-directional voice coil motors. The drivers can source the output current without requiring a direction control signal. The ROHM Bi-Directional VCM Drivers feature ISRC (intelligent slew rate control) to reduce mechanical ringing to optimize the camera’s autofocus capabilities.

Features

  • Bi-directional constant current driver
  • 10-bit Resolution current control
  • ISRC Mechanical ringing compensation
  • Integrated current sense resistor
  • 2-Wire serial interface
    • I2C FAST-MODE Plus Compatible (BU64253GWZ)
    • I2C Fm+ Compatible (BU64985GWZ)
    • I2C FAST-MODE Plus Compatible (BU64253GWZ)

Applications

  • Mobile camera module
  • Bi-directional VCM actuators

Block Diagram

Block Diagram - ROHM Semiconductor Bi-Directional VCM Drivers for Auto Focus

ROHM Semiconductor Bi-Directional VCM Drivers for Auto Focus