SLUSCM7A June   2017  – March 2019

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1.      Simplified Schematic
  4. Revision History
  5. Pin Configuration and Functions
    1.     Pin Functions
  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  Supply Current
    6. 6.6  Power Supply Control
    7. 6.7  Low-Voltage General Purpose I/O, TS1
    8. 6.8  Power-On Reset (POR)
    9. 6.9  Internal 1.8-V LDO
    10. 6.10 Current Wake Comparator
    11. 6.11 Coulomb Counter
    12. 6.12 ADC Digital Filter
    13. 6.13 ADC Multiplexer
    14. 6.14 Internal Temperature Sensor
    15. 6.15 NTC Thermistor Measurement Support
    16. 6.16 High-Frequency Oscillator
    17. 6.17 Low-Frequency Oscillator
    18. 6.18 Voltage Reference 1
    19. 6.19 Voltage Reference 2
    20. 6.20 Instruction Flash
    21. 6.21 Data Flash
    22. 6.22 Current Protection Thresholds
    23. 6.23 Current Protection Timing
    24. 6.24 N-CH FET Drive (CHG, DSG)
    25. 6.25 I2C Interface I/O
    26. 6.26 I2C Interface Timing
    27. 6.27 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Battery Parameter Measurements
        1. 7.3.1.1 bq27750 Processor
      2. 7.3.2  Coulomb Counter (CC)
      3. 7.3.3  CC Digital Filter
      4. 7.3.4  ADC Multiplexer
      5. 7.3.5  Analog-to-Digital Converter (ADC)
      6. 7.3.6  ADC Digital Filter
      7. 7.3.7  Internal Temperature Sensor
      8. 7.3.8  External Temperature Sensor Support
      9. 7.3.9  Power Supply Control
      10. 7.3.10 Power-On Reset
      11. 7.3.11 Bus Communication Interface
      12. 7.3.12 N-Channel Protection FET Drive
      13. 7.3.13 Low Frequency Oscillator
      14. 7.3.14 High Frequency Oscillator
      15. 7.3.15 1.8-V Low Dropout Regulator
      16. 7.3.16 Internal Voltage References
      17. 7.3.17 Overcurrent in Discharge Protection
      18. 7.3.18 Short-Circuit Current in Charge Protection
      19. 7.3.19 Short-Circuit Current in Discharge 1 and 2 Protection
      20. 7.3.20 Primary Protection Features
      21. 7.3.21 Gas Gauging
      22. 7.3.22 Charge Control Features
      23. 7.3.23 Authentication
    4. 7.4 Device Functional Modes
      1. 7.4.1 Lifetime Logging Features
      2. 7.4.2 Configuration
        1. 7.4.2.1 Coulomb Counting
        2. 7.4.2.2 Cell Voltage Measurements
        3. 7.4.2.3 Current Measurements
        4. 7.4.2.4 Auto Calibration
        5. 7.4.2.5 Temperature Measurements
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Design Requirements (Default)
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Setting Design Parameters
      3. 8.2.3 Calibration Process
      4. 8.2.4 Gauging Data Updates
        1. 8.2.4.1 Application Curve
  9. Power Supply Requirements
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information Information

Package Options

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

Features

  • High-side protection N-CH FET drive allows serial bus communication during fault conditions
  • Programmable protection levels for voltage, current, and temperature
  • Analog front end with two independent ADCs
    • Support for simultaneous current and voltage sampling
    • High-accuracy coulomb counter with input offset error < 1 µV (typical)
  • Supports down to 1-mΩ current sense resistor while capable of 1-mA current measurement
  • SHA-1 authentication responder for increased battery pack security
  • 400-kHz I2C bus communications interface for high-speed programming and data access
  • Compact 12-pin VSON package (DRZ)