ZHCSDC8A December   2014  – November 2017

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     bq24193 的 PSEL、USB On-The-Go (OTG) 和支持 JEITA 配置文件
  4. 4 修订历史记录
  5. 5 说明 （续）
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Device Power Up
        1. 8.3.1.1 Power-On-Reset (POR)
        2. 8.3.1.2 Power Up from Battery without DC Source
          1. 8.3.1.2.1 BATFET Turn Off
          2. 8.3.1.2.2 Shipping Mode
        3. 8.3.1.3 Power Up from DC Source
          1. 8.3.1.3.1 REGN LDO
          2. 8.3.1.3.2 Input Source Qualification
          3. 8.3.1.3.3 Input Current Limit Detection
          4. 8.3.1.3.4 PSEL/OTG Pins Set Input Current Limit
          5. 8.3.1.3.5 HIZ State wth 100mA USB Host
          6. 8.3.1.3.6 Force Input Current Limit Detection
        4. 8.3.1.4 Converter Power-Up
        5. 8.3.1.5 Boost Mode Operation from Battery
      2. 8.3.2 Power Path Management
        1. 8.3.2.1 Narrow VDC Architecture
        2. 8.3.2.2 Dynamic Power Management
        3. 8.3.2.3 Supplement Mode
      3. 8.3.3 Battery Charging Management
        1. 8.3.3.1 Autonomous Charging Cycle
        2. 8.3.3.2 Battery Charging Profile
        3. 8.3.3.3 Battery Path Impedance IR Compensation
        4. 8.3.3.4 Thermistor Qualification
          1. 8.3.3.4.1 JEITA Guideline Compliance
        5. 8.3.3.5 Charging Termination
          1. 8.3.3.5.1 Termination when REG02[0] = 1
          2. 8.3.3.5.2 Termination when REG05[6] = 1
        6. 8.3.3.6 Charging Safety Timer
        7. 8.3.3.7 USB Timer when Charging from USB100mA Source
      4. 8.3.4 Status Outputs (PG, STAT, and INT)
        1. 8.3.4.1 Power Good Indicator (PG)
        2. 8.3.4.2 Charging Status Indicator (STAT)
        3. 8.3.4.3 Interrupt to Host (INT)
      5. 8.3.5 Protections
        1. 8.3.5.1 Input Current Limit on ILIM
        2. 8.3.5.2 Thermal Regulation and Thermal Shutdown
        3. 8.3.5.3 Voltage and Current Monitoring in Buck Mode
          1. 8.3.5.3.1 Input Over-Voltage (ACOV)
          2. 8.3.5.3.2 System Over-Voltage Protection (SYSOVP)
        4. 8.3.5.4 Voltage and Current Monitoring in Boost Mode
          1. 8.3.5.4.1 VBUS Over-Voltage Protection
        5. 8.3.5.5 Battery Protection
          1. 8.3.5.5.1 Battery Over-Current Protection (BATOVP)
          2. 8.3.5.5.2 Charging During Battery Short Protection
          3. 8.3.5.5.3 System Over-Current Protection
      6. 8.3.6 Serial Interface
        1. 8.3.6.1 Data Validity
        2. 8.3.6.2 START and STOP Conditions
        3. 8.3.6.3 Byte Format
        4. 8.3.6.4 Acknowledge (ACK) and Not Acknowledge (NACK)
        5. 8.3.6.5 Slave Address and Data Direction Bit
          1. 8.3.6.5.1 Single Read and Write
          2. 8.3.6.5.2 Multi-Read and Multi-Write
    4. 8.4 Device Functional Modes
      1. 8.4.1 Host Mode and Default Mode
        1. 8.4.1.1 Plug in USB100mA Source with Good Battery
        2. 8.4.1.2 USB Timer when Charging from USB 100-mA Source
    5. 8.5 Register Map
      1. 8.5.1 I2C Registers
        1. 8.5.1.1  Input Source Control Register REG00 (reset = 00110000, or 30)
          1. Table 7. REG00 Input Source Control Register Description
        2. 8.5.1.2  Power-On Configuration Register REG01 (reset = 00011011, or 1B)
          1. Table 8. REG01 Power-On Configuration Register Description
        3. 8.5.1.3  Charge Current Control Register REG02 (reset = 01100000, or 60)
          1. Table 9. REG02 Charge Current Control Register Description
        4. 8.5.1.4  Pre-Charge/Termination Current Control Register REG03 (reset = 00010001, or 11)
          1. Table 10. REG03 Pre-Charge/Termination Current Control Register Description
        5. 8.5.1.5  Charge Voltage Control Register REG04 (reset = 10110010, or B2)
          1. Table 11. REG04 Charge Voltage Control Register Description
        6. 8.5.1.6  Charge Termination/Timer Control Register REG05 (reset = 10011010, or 9A)
          1. Table 12. REG05 Charge Termination/Timer Control Register Description
        7. 8.5.1.7  IR Compensation / Thermal Regulation Control Register REG06 (reset = 00000011, or 03)
          1. Table 13. REG06 IR Compensation / Thermal Regulation Control Register Description
        8. 8.5.1.8  Misc Operation Control Register REG07 (reset = 01001011, or 4B)
          1. Table 14. REG07 Misc Operation Control Register Description
        9. 8.5.1.9  System Status Register REG08
          1. Table 15. REG08 System Status Register Description
        10. 8.5.1.10 Fault Register REG09
          1. Table 16. REG09 Fault Register Description
        11. 8.5.1.11 Vender / Part / Revision Status Register REG0A (reset = 00101111, or 2F)
          1. Table 17. REG0A Vender / Part / Revision Status Register Description
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Inductor Selection
        2. 9.2.2.2 Input Capacitor
        3. 9.2.2.3 Output Capacitor
      3. 9.2.3 Application Performance Plots
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 文档支持
      1. 12.1.1 相关文档
    2. 12.2 接收文档更新通知
    3. 12.3 社区资源
    4. 12.4 商标
    5. 12.5 静电放电警告
    6. 12.6 Glossary
  13. 13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

5 说明 （续）

它的低阻抗电源路径对开关模式运行效率进行了优化、减少了电池充电时间并延长了放电阶段的电池寿命。具有充电和系统设置的 I2C 串行接口使得此器件成为一个真正地灵活解决方案。

该器件支持多种输入源，包括标准 USB 主机端口、USB 充电端口以及大功率直流适配器。bq24193 从系统检测电路（如 USB PHY 器件）中获取结果。bq24193 符合 USB 2.0 和 USB 3.0 电源规范，具有输入电流和电压调节功能。同时，bq24193 具有高达 1.3A 的限流能力，能够为 VBUS 提供 5V 电压，符合 USB On-the-Go (OTG) 运行功率额定值规范。

电源路径管理将系统电压调节为稍稍高于电池电压，但是又不会下降到低于 3.5V 最小系统电压（可编程）。借助于这个特性，即使在电池电量完全耗尽或者电池被拆除时，系统也能保持运行。当达到输入电流限值或电压限值时，电源路径管理自动将充电电流减少为 0。随着系统负载持续增加，电源路径在满足系统电源需求之前将电池放电。这个补充模式运行防止输入源过载。

此器件在无需软件控制情况下启动并完成一个充电周期。它自动检测电池电压并通过三个阶段为电池充电：预充电、恒定电流和恒定电压。在充电周期的末尾，当充电电流低于在恒定电压阶段中预设定的限值时，充电器自动终止。当整个电池下降到低于再充电阈值时，充电器将自动启动另外一个充电周期。

此器件提供针对电池充电和系统运行的多种安全 特性， 其中包括两组负温度系数热敏电阻监视、充电安全定时器和过压/过流保护。bq24193 还支持符合 JEITA 准则的温度曲线。当结温超过 120°C（可设定）时，热调节减少充电电流。

STAT 输出报告充电状态和任何故障条件。 bq24193 中的PG输出指示电源是否正常。当故障发生时，INT 会立即通知主机。

bq24193 采用 24 引脚 4.00 x 4.00mm2 薄型 VQFN 封装。