ZHCSRB7A December   2022  – October 2023 BQ27427

PRODUCTION DATA  

  1.   1
  2. 特性
  3. 应用
  4. 说明
  5. Pin Configuration and Functions
  6. Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Supply Current
    6. 5.6  Digital Input and Output DC Characteristics
    7. 5.7  LDO Regulator, Wake-up, and Auto-Shutdown DC Characteristics
    8. 5.8  LDO Regulator, Wake-up, and Auto-Shutdown AC Characteristics
    9. 5.9  ADC (Temperature and Cell Measurement) Characteristics
    10. 5.10 Integrating ADC (Coulomb Counter) Characteristics
    11. 5.11 Integrated Sense Resistor Characteristics, –40°C to 85 °C
    12. 5.12 I2C-Compatible Interface Communication Timing Characteristics
    13. 5.13 SHUTDOWN and WAKE-UP Timing
    14. 5.14 Typical Characteristics
  7. Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Communications
        1. 6.3.1.1 I2C Interface
        2. 6.3.1.2 I2C Time Out
        3. 6.3.1.3 I2C Command Waiting Time
        4. 6.3.1.4 I2C Clock Stretching
    4. 6.4 Device Functional Modes
  8. Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 BAT Voltage Sense Input
        2. 7.2.2.2 Integrated LDO Capacitor
      3. 7.2.3 External Thermistor Support
      4. 7.2.4 Application Curves
  9. Power Supply Recommendation
    1. 8.1 Power Supply Decoupling
  10. Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 第三方产品免责声明
      2. 10.1.2 Related Documentation
    2. 10.2 Trademarks
    3. 10.3 静电放电警告
    4. 10.4 术语表
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

封装选项

机械数据 (封装 | 引脚)
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特性

  • 单节锂离子电池电量监测计
    • 驻留在系统主板上
    • 支持嵌入式或可拆除电池
    • 由具有集成 LDO 的电池直接供电
    • 集成低阻值检测电阻 (7mΩ)
  • 超低功耗:正常模式下为 50µA,睡眠模式下为 9µA
  • 基于获得专利的 Impedance Track™ 技术的电池电量监测
    • 为 4.2V、4.35V 和 4.4V 电池提供三种可选的预编程配置文件
    • 借助平滑滤波器报告剩余电量和荷电状态 (SOC)
    • 针对电池老化、自放电、温度和速率变化自动调节
    • 估计电池健康状况(老化)
  • 微控制器外设接口支持:
    • 400kHz I2C 串行接口
    • 可配置 SOC 中断或
      电池低电量数字输出警告
    • 内部温度传感器或主机报告的温度或外部热敏电阻