ZHCSF78E June   2016  – April 2019 BQ35100

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      简化原理图
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
    1.     Pin 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  Power Supply Current Static Modes
    6. 6.6  Digital Input and Outputs
    7. 6.7  Power-On Reset
    8. 6.8  LDO Regulator
    9. 6.9  Internal Temperature Sensor
    10. 6.10 Internal Clock Oscillators
    11. 6.11 Integrating ADC (Coulomb Counter)
    12. 6.12 ADC (Temperature and Voltage Measurements)
    13. 6.13 Data Flash Memory
    14. 6.14 I2C-Compatible Interface Timing Characteristics
    15. 6.15 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 Basic Measurement Systems
        1. 7.3.1.1 Voltage
        2. 7.3.1.2 Temperature
        3. 7.3.1.3 Coulombs
        4. 7.3.1.4 Current
      2. 7.3.2 Battery Gauging
        1. 7.3.2.1 ACCUMULATOR (ACC) Mode
        2. 7.3.2.2 STATE-OF-HEALTH (SOH) Mode
          1. 7.3.2.2.1 Low State-of-Health Alert
        3. 7.3.2.3 END-OF-SERVICE (EOS) Mode
          1. 7.3.2.3.1 Initial EOS Learning
            1. 7.3.2.3.1.1 End-Of-Service Detection
      3. 7.3.3 Power Control
      4. 7.3.4 Battery Condition Warnings
        1. 7.3.4.1 Battery Low Warning
        2. 7.3.4.2 Temperature Low Warning
        3. 7.3.4.3 Temperature High Warning
        4. 7.3.4.4 Battery Low SOH Warning
        5. 7.3.4.5 Battery EOS OCV BAD Warning
      5. 7.3.5 ALERT Signal
      6. 7.3.6 Lifetime Data Collection
      7. 7.3.7 SHA-1 Authentication
      8. 7.3.8 Data Commands
        1. 7.3.8.1 Command Summary
        2. 7.3.8.2 0x00, 0x01 AltManufacturerAccess() and 0x3E, 0x3F AltManufacturerAccess()
        3. 7.3.8.3 Control(): 0x00/0x01
      9. 7.3.9 Communications
        1. 7.3.9.1 I2C Interface
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Preparation for Gauging
        2. 8.2.2.2 Gauging Mode Selection
          1. 8.2.2.2.1 ACCUMULATOR Mode
            1. 8.2.2.2.1.1 STATE-OF-HEALTH (Voltage Correlation) Mode
            2. 8.2.2.2.1.2 END-OF-SERVICE (Resistance Correlation) Mode
        3. 8.2.2.3 Voltage Measurement Selection
        4. 8.2.2.4 Temperature Measurement Selection
        5. 8.2.2.5 Current Sense Resistor Selection
        6. 8.2.2.6 Expected Device Usage Profiles
        7. 8.2.2.7 Using the BQ35100 Fuel Gauge with a Battery and Capacitor in Parallel
          1. 8.2.2.7.1 ACCUMULATOR Mode
          2. 8.2.2.7.2 STATE-OF-HEALTH Mode
          3. 8.2.2.7.3 END-OF-SERVICE Mode
      3. 8.2.3 EOS Mode Load Pulse Synchronization
      4. 8.2.4 Benefits of the BQ35100 Gauge Compared to Alternative Monitoring Techniques
      5. 8.2.5 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Introduction
      2. 10.1.2 Power Supply Decoupling Capacitor
      3. 10.1.3 Capacitors
      4. 10.1.4 Communication Line Protection Components
    2. 10.2 Layout Example
      1. 10.2.1 Ground System
      2. 10.2.2 Kelvin Connections
      3. 10.2.3 Board Offset Considerations
    3. 10.3 ESD Spark Gap
  11. 11器件和文档支持
    1. 11.1 文档支持
      1. 11.1.1 相关文档
    2. 11.2 接收文档更新通知
    3. 11.3 社区资源
    4. 11.4 商标
    5. 11.5 静电放电警告
    6. 11.6 术语表
  12. 12机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

8.2.2.6 Expected Device Usage Profiles

The BQ35100 device is designed to work in a system where there is a period discharge pulse of at least 10 s of mA for 10 s of ms. In ACC mode, any pulse can be measured based on the information the host requires. However, in EOS modes, the battery condition does not change very fast so only pulses that are many hours apart; for example, 24 hours, are needed.

If the time between pulses needing monitoring is less than a minute, then it is recommended not to power down the device. However, if the period is greater than 5 hours, then powering down the device between pulses is expected. Periods in between risk not allowing the battery to rest and any EOS-related data may be compromised. Battery EOS OCV BAD Warning provides more information on this.

The shorter the period between pulses has a large effect of the overall cumulative power consumption of the battery electronics. See Device Functional Modes for more details on average power consumption.

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