JAJSBP7N September   2008  – October 2021 BQ24072 , BQ24073 , BQ24074 , BQ24075 , BQ24079

PRODUCTION DATA  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
  4. 4 Revision History
  5. 5 概要 (続き)
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings (1)
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Typical Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Undervoltage Lockout (UVLO)
      2. 9.3.2 Power On
      3. 9.3.3 Overvoltage Protection (OVP)
      4. 9.3.4 Dynamic Power Path Management
        1. 9.3.4.1 Input Source Connected (ADAPTER or USB)
          1. 9.3.4.1.1 Input DPM Mode (VIN-DPM)
          2. 9.3.4.1.2 DPPM Mode
          3. 9.3.4.1.3 Battery Supplement Mode
        2. 9.3.4.2 Input Source Not Connected
      5. 9.3.5 Battery Charging
        1. 9.3.5.1 Charge Current Translator
        2. 9.3.5.2 Adjustable Termination Threshold (ITERM Input, BQ24074)
        3. 9.3.5.3 Termination Disable (TD Input, BQ24072, BQ24073)
        4. 9.3.5.4 Battery Detection and Recharge
        5. 9.3.5.5 Battery Disconnect (SYSOFF Input, BQ24075, BQ24079)
        6. 9.3.5.6 Dynamic Charge Timers (TMR Input)
        7. 9.3.5.7 Status Indicators ( PGOOD, CHG)
        8. 9.3.5.8 Thermal Regulation and Thermal Shutdown
      6. 9.3.6 Battery Pack Temperature Monitoring
    4. 9.4 Device Functional Modes
      1. 9.4.1 Sleep Mode
      2. 9.4.2 Explanation of Deglitch Times and Comparator Hysteresis
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 BQ2407x Charger Design Example
          1. 10.2.2.1.1 Termination Disable (TD) (BQ24072, BQ24073 only)
          2. 10.2.2.1.2 System ON/OFF (SYSOFF) (BQ24075 or BQ24079 only)
        2. 10.2.2.2 Calculations
          1. 10.2.2.2.1 Program the Fast Charge Current (ISET):
          2. 10.2.2.2.2 Program the Input Current Limit (ILIM)
          3. 10.2.2.2.3 Program the Termination Current Threshold (ITERM) (BQ24074 only)
          4. 10.2.2.2.4 Program 6.25-hour Fast-Charge Safety Timer (TMR)
        3. 10.2.2.3 TS Function
        4. 10.2.2.4 CHG and PGOOD
        5. 10.2.2.5 Selecting IN, OUT, and BAT Pin Capacitors
      3. 10.2.3 Application Curves
    3. 10.3 System Examples
      1. 10.3.1 Standalone Charger
      2. 10.3.2 Disconnecting the Battery From the System
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
    3. 12.3 Thermal Considerations
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Third-Party Products Disclaimer
    2. 13.2 Receiving Notification of Documentation Updates
    3. 13.3 サポート・リソース
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

8.6 Typical Characteristics

VIN = 6 V, EN1=1, EN2=0, BQ24073 application circuit, TA = 25°C, unless otherwise noted.

GUID-2A73C112-8F24-4771-9AA4-A89E5CB1A60A-low.gifFigure 8-1 Thermal Regulation
GUID-405D33F3-7292-4293-9F32-83C15BDE96D2-low.gifFigure 8-3 Dropout Voltage vs Temperature No Input Supply
GUID-AE03AD0E-386C-4C09-83BC-0FAB19550784-low.gifFigure 8-2 Dropout Voltage vs Temperature
GUID-FC4ED304-4A76-486B-9B39-0E64E5749A0E-low.gifFigure 8-4 BQ24072 Output Regulation Voltage vs Battery Voltage
GUID-96E26EE3-A787-4485-AF5F-4E3EE85BD400-low.gifFigure 8-5 BQ24072 Output Regulation Voltage vs Temperature
GUID-ACC343FD-2231-4E05-AE14-87D7F511A50E-low.gifFigure 8-7 BQ24075, BQ24079 Output Regulation Voltage vs Temperature
GUID-886ADAD1-5977-4571-9A1E-7D5537BB7156-low.gifFigure 8-9 BQ24072/ 73/ 75/ 79 Overvoltage Protection Threshold vs Temperature
GUID-6D3FF39C-07B8-4702-8D2A-944BF5658766-low.gifFigure 8-11 BQ24074 Input Current Limit vs Input Voltage
GUID-1D551FFB-83A8-4739-8D67-BEDB0EF29418-low.gifFigure 8-13 Fastcharge Current vs Battery Voltage
GUID-55E3A267-588F-4560-9DCB-3BC1CE2E8A7C-low.gifFigure 8-15 Precharge Current vs Battery Voltage
GUID-FAD985B3-1004-4312-92B8-9D99FB87D66A-low.gifFigure 8-6 BQ24073/ 74 Output Regulation Voltage vs Temperature
GUID-4BA936B7-5DCD-43F4-8D33-F84CA390DC18-low.gifFigure 8-8 BAT Regulation Voltage vs Temperature
GUID-B36EAB44-3055-4BF2-A38F-39BFB980563D-low.gifFigure 8-10 BQ24074 Overvoltage Protection Threshold vs Temperature
GUID-E2DA83F2-8738-45F4-947E-2C0E547AAB13-low.gifFigure 8-12 Fastcharge Current vs Battery Voltage
GUID-CAA2D0EB-AE48-489C-903E-AA178BCFA3D2-low.gifFigure 8-14 Precharge Current vs Battery Voltage