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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
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
LV8498CT-TE-L-H Lifetime
Pb-free
Halide free
LV8498CT WLCSP-6 / WLP-6K 567ES 1 260 Tape and Reel 5000 $0.388
Market Leadtime (weeks) : Contact Factory
Case Outlines
567ES   
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