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LV8498CT: Motor Driver, Constant Current, Control Voice Coil

Datasheet: Constant-Current Control Voice Coil Motor Driver IC
Rev. 0 (79.0kB)
Product Overview
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The LV8498CT is a constant current driver IC for voice coil motors that supports I2C control integrating a digital/analog converter (DAC). It uses an ultraminiature WLP package and includes a current detection resistor for constant current control, which makes the IC ideal for miniaturization of camera modules intended for use in camera-equipped mobile phones. The output transistor has a low on-resistance of 1 Ω and the resistance of the built-in current detection resistor is 1 Ω, which minimizes the voltage loss and helps withstand voltage drop in VCC. The function is incorporated, which, by changing the current in a stepped pattern while taking time at rise and fall of the output current, provides the current a slope, improving the converging stability of the voice coil motor (current slope function).
Features   Benefits
  • I2C bus control supported.
  • Easy control
  • Wide operating voltage range (2.2 to 5.0V).
  • Wide power supply application
  • Built-in current detection resistor.
  • Current limit protection
  • 6-pin WLP package used (1.27 0.87 0.25mm).
  • Small mounting space
  • Built-in voltage drop protection circuit (VCC = 2V output off).
  • Voltage drop protection
  • Built-in thermal protection circuit.
  • Thermal protection
  • Constant current control enabled by 10bit DAC
  • Improving the converging stability of the AF-VCM
  • Less External Component
  • Simple Design
  • Stand-by current: 0A
  • Low consumption
  • Constant current driver for voice coil motors.
  • Low output block total-resistance of 2Ω helps withstand voltage drop in VCC. (Current detection resistance + output
    transistor on-resistance).
  • Built-in VCM overshoot preventive function (current slope function).
  • Power supply Voltage: 2.2 to 5.0V
Applications   End Products
  • Portable & Wireless
  • Feature Phone
  • Smartphone
  • Tablet
  • Camera for mobile phone
  • Pocket movie Camera
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
LV8498CTGEVB Consult Sales Office
Constant Current Driver IC Evaluation Board
LV8498CTGEVK Consult Sales Office
LSI Evaluation Board Kit
Budgetary Price/Unit
Case Outline
LV8498CT-TE-L-H Lifetime
Halide free
LV8498CT WLCSP-6 / WLP-6K 567ES 1 260 Tape and Reel 5000 $0.388
Market Leadtime (weeks) : Contact Factory
Case Outlines
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