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

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7.1.3 Secondary (2nd Level) Safety Features

The secondary safety features of the bq3060 can be used to indicate more serious faults via the FUSE (pin 21). This pin can be used to blow an in-line fuse to permanently disable the battery pack from charging and discharging. This pin is also used as an input to sense the state of the fuse. The secondary safety protection features include:

  • Safety overvoltage
  • Safety overcurrent in charge and discharge
  • Safety overtemperature in charge and discharge
  • Charge FET and Zero-Volt Charge FET fault
  • Discharge FET fault
  • Cell imbalance detection
  • Fuse blow by a secondary voltage protection IC
  • AFE register integrity fault (AFE_P)
  • AFE communication fault (AFE_C)