SLVSBN6A June   2013  – August 2015 DRV201A

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Data Transmission Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 VCM Driver Output Stage Operation
      2. 7.3.2 Ringing Compensation
    4. 7.4 Device Functional Modes
      1. 7.4.1 Modes of Operation
    5. 7.5 Programming
      1. 7.5.1 I2C Bus Operation
        1. 7.5.1.1 Single Write to a Defined Location
        2. 7.5.1.2 Single Read from a Defined Location and Current Location
        3. 7.5.1.3 Sequential Read and Write
        4. 7.5.1.4 I2C Device Address, Start and Stop Condition
    6. 7.6 Register Maps
      1. 7.6.1 Control Register (Address - 0x02h)
      2. 7.6.2 VCM MSB Current Control Register (VCM_Current_MSB) Address - 0x03h
      3. 7.6.3 VCM LSB Current Control Register (VCM_Current_lSB) Address - 0x04h
      4. 7.6.4 Status Register (Status) Address - 0x05h
      5. 7.6.5 Mode Register (Mode) Address - 0x06h
      6. 7.6.6 VCM Resonance Frequency Register (VCM_FREQ) Address - 0x07h
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 VCM Mechanical Ringing Frequency
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 User Example 1
        2. 8.2.2.2 User Example 2
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Device Nomenclature
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Configurable for Linear or PWM Mode VCM Current Generation
  • High Efficiency PWM Current Control for VCM
  • Advanced Ringing Compensation
  • Integrated 10-bit D/A Converter for VCM Current Control
  • Protection
    • Open and Short-Circuit Detection
    • Undervoltage Lockout (UVLO)
    • Thermal Shutdown
    • Internal Current Limit for VCM Driver
    • 4-kV ESD-HBM
  • I2C Interface
  • Improved PWM-to-Linear Mode Setting Time vs. DRV201
  • Improved EMC Performance vs. DRV201
  • Improved PWM-to-Linear Mode Settling Time vs. DRV201
  • Improved EMC Performance vs. DRV201
  • Operating Temperature Range: -40ºC to 85ºC
  • 6-Ball WCSP Package With 0.4-mm Pitch
  • Max Die Size: 0.806 mm × 1.49 mm
  • Max Package Height: 0.3 mm

2 Applications

  • Cell Phone Auto Focus
  • Digital Still Camera Auto Focus
  • Iris and Exposure Controls
  • Security Cameras
  • Web and PC Cameras
  • Actuator Controls

3 Description

The DRV201A is an advanced voice coil motor driver for camera auto focus. It has an integrated D/A converter for setting the VCM current. VCM current is controlled with a fixed frequency PWM controller or a linear mode driver. Current generation can be selected via I2C register. The DRV201A has an integrated sense resistor for current regulation and the current can be controlled through I2C.

When changing the current in the VCM, the lens ringing is compensated with an advanced ringing compensation function. Ringing compensation reduces the needed time for auto focus significantly. The device also has VCM short and open protection functions.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
DRV201A PicoStar (6) 0.80 mm × 1.48 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

DRV201A figure_01_slvsbn6.gif