ZHCSEZ5 May   2016

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 修订历史记录
  5. 5 Pin Configuration and 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 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 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 Undervoltage Lockout
      2. 7.3.2 Power On
      3. 7.3.3 Power-Path Management
        1. 7.3.3.1 Input Source Connected - Adapter or USB
          1. 7.3.3.1.1 Input Voltage Dynamic Power Management, (VIN_DPM)
          2. 7.3.3.1.2 Dynamic Power Path Management (DPPM)
          3. 7.3.3.1.3 Battery Supplement Mode
        2. 7.3.3.2 Input Source not Connected
      4. 7.3.4 Thermal Regulation and Thermal Shutdown
      5. 7.3.5 Battery Pack Temperature Monitoring
        1. 7.3.5.1 Modifying and Extending the Allowable Temperature Range for Charging
    4. 7.4 Device Functional Modes
      1. 7.4.1 Battery Charging
        1. 7.4.1.1 Charge Current Translator
        2. 7.4.1.2 Battery Detection and Recharge
        3. 7.4.1.3 Adjustable Termination Threshold (ITERM Input)
        4. 7.4.1.4 Dynamic Charge Timers (TMR Input)
        5. 7.4.1.5 Status Indicators (PGOOD, CHG)
          1. 7.4.1.5.1 Timer Fault
      2. 7.4.2 Explanation of Deglitch Times and Comparator Hysteresis
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Calculations
          1. 8.2.2.1.1 Program The Fast-Charge Current (ISET):
          2. 8.2.2.1.2 Program The Input Current Limit (ILIM)
          3. 8.2.2.1.3 Program The Termination Current Threshold (ITERM, bq24232HA)
          4. 8.2.2.1.4 Program 7.5-hour Fast-Charge Safety Timer (TMR)
        2. 8.2.2.2 TS Function
        3. 8.2.2.3 CHG and PGOOD
        4. 8.2.2.4 Selecting IN, OUT, and BAT Pin Capacitors
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
    1. 9.1 Requirements for OUT Output
    2. 9.2 USB Sources and Standard AC Adapters
    3. 9.3 Half-Wave Adapters
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
  11. 11器件和文档支持
    1. 11.1 器件支持
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 文档支持
      1. 11.2.1 相关文档　
    3. 11.3 商标
    4. 11.4 静电放电警告
    5. 11.5 Glossary
  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

9 Power Supply Recommendations

9.1 Requirements for OUT Output

In order to provide an output voltage on SYS, the bq24232HA requires a power supply between 4.35 V and 10 V to fully charge a battery. The supply must have at least 100 mA current rating connected to IN; or, a single-cell Li-Ion battery with voltage around 2.2 V connected to BAT. The source current rating needs to be at least 1.5 A in order to provide maximum output current to SYS.

9.2 USB Sources and Standard AC Adapters

In order for charging to occur the source voltage measured at the IN terminals of the IC, factoring in cable/trace losses from the source, must be greater than the VINDPM threshold (in USB mode), but less than the maximum values shown above. The current rating of the source must be higher than the load requirements for OUT in the application. For charging at a desired charge current of ICHRG, IIN > (ISYS+ ICHRG). The charger limits IIN to the current limit setting of EN1/EN2.

9.3 Half-Wave Adapters

Some low-cost adapters implement a half rectifier topology, which causes the adapter output voltage to fall below the battery voltage during part of the cycle. To enable operation with low-cost adapters under those conditions, the bq24232HA keeps the charger on for at least 20 ms (typical) after the input power puts the part in sleep mode. This feature enables use of external low-cost adapters using 50-Hz networks.