SLUS999A November   2009  – November 2015

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (Continued)
  6. 6 Pin Configuration and 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 SMB Timing Requirements
    7. 7.7 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  Adapter Detect and Power Up
      2. 8.3.2  Enable and Disable Charging
      3. 8.3.3  Automatic Internal Soft-Start Charger Current
      4. 8.3.4  Switching Frequency
      5. 8.3.5  Converter Operation
      6. 8.3.6  Refresh BTST Capacitor
      7. 8.3.7  UCP (Charge Undercurrent): Using Sense Resistor
      8. 8.3.8  Cycle-By-Cycle Charge Overcurrent Protection, Using High-Side Sense-FET
      9. 8.3.9  Average Charge Overcurrent Protection, Using Sense Resistor
      10. 8.3.10 Battery Overvoltage Protection, Using Remote Sensing VFB
      11. 8.3.11 Battery Short Protection
      12. 8.3.12 Battery Trickle Charging
      13. 8.3.13 High Accuracy VICM Using Current Sense Amplifier (CSA)
      14. 8.3.14 VDDSMB Input Supply
      15. 8.3.15 Input Undervoltage Lockout (UVLO)
      16. 8.3.16 VDDP Gate Drive Regulator
      17. 8.3.17 Input Current Comparator Trip Detection
      18. 8.3.18 Open-Drain Status Outputs (ACOK, ICOUT Pins)
      19. 8.3.19 Thermal Shutdown Protection
      20. 8.3.20 Charger Timeout
      21. 8.3.21 Charge Termination For Li-Ion or Li-Polymer
      22. 8.3.22 Remote Sense
    4. 8.4 Device Functional Modes
      1. 8.4.1 Continuous Conduction Mode and Discontinuous Conduction Mode
    5. 8.5 Programming
      1. 8.5.1 Battery-Charger Commands
        1. 8.5.1.1 SMBus Interface
      2. 8.5.2 Battery Voltage Regulation
      3. 8.5.3 Battery Current Regulation
      4. 8.5.4 Input Adapter Current Regulation
    6. 8.6 Register Maps
  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
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
      2. 12.1.2 Device Nomenclature
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

10 Power Supply Recommendations

The bq24765 requires a minimum 4.5 V DCINA voltage to allow proper operation. To have 6 V VDDP voltage and high efficiency operation, a 7-V to 24-V power supply voltage range is recommended.