SLUS928B March   2009  – July 2016

 

  1. 1Features
  2. 2Applications
  3. 3Description
    1.     Device Images
      1.      System Partitioning Diagram
  4. 4Revision History
  5. 5Pin Configuration and Functions
    1.     Pin Functions
  6. 6Specifications
    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
  7. 7Detailed Description
    1. 7.1 Feature Description
      1. 7.1.1  Battery Parameter Measurements
        1. 7.1.1.1 Charge and Discharge Counting
        2. 7.1.1.2 Voltage
        3. 7.1.1.3 Voltage Calibration and Accuracy
        4. 7.1.1.4 Current
        5. 7.1.1.5 Auto Calibration
        6. 7.1.1.6 Temperature
      2. 7.1.2  Primary (1st Level) Safety Features
      3. 7.1.3  Secondary (2nd Level) Safety Features
      4. 7.1.4  Charge Control Features
      5. 7.1.5  Gas Gauging
      6. 7.1.6  Lifetime Data Logging Features
      7. 7.1.7  Authentication
      8. 7.1.8  Configuration
        1. 7.1.8.1 System Present Operation
        2. 7.1.8.2 2-, 3-, or 4-Cell Configuration
        3. 7.1.8.3 Cell Balance Control
      9. 7.1.9  Communications
        1. 7.1.9.1 SMBus On and Off State
      10. 7.1.10 SBS Commands
    2. 7.2 Device Functional Modes
      1. 7.2.1 Power Modes
  8. 8Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Community Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  9. 9Mechanical, Packaging, and Orderable Information

Package Options

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

7.1.1.3 Voltage Calibration and Accuracy

The bq3060 is calibrated for voltage prior to shipping from TI. The bq3060 voltage measurement signal chain (ADC, high voltage translation, circuit interconnect) will be calibrated for each cell. The external filter resistors, connected from each cell to the VCx input of the bq3060, are required to be 1kΩ. The accuracy of the factory-calibrated devices is +/- 10mV per cell at room temperature at 4V cell voltage. Without any customer voltage calibration, this is the level of accuracy expected as long as the filter resistor value is 1kΩ. If better voltage accuracy is desired, customer voltage calibration is required. An application note on calibrating and programming the bq3060 is available in the product web folder. See Data Flash Programming and Calibrating the bq3060 Gas Gauge (SLUA502) for more details.