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

12 Device and Documentation Support

12.1 Device Support

12.1.1 Third-Party Products Disclaimer

TI'S PUBLICATION OF INFORMATION REGARDING THIRD-PARTY PRODUCTS OR SERVICES DOES NOT CONSTITUTE AN ENDORSEMENT REGARDING THE SUITABILITY OF SUCH PRODUCTS OR SERVICES OR A WARRANTY, REPRESENTATION OR ENDORSEMENT OF SUCH PRODUCTS OR SERVICES, EITHER ALONE OR IN COMBINATION WITH ANY TI PRODUCT OR SERVICE.

12.1.2 Device Nomenclature

    VICM  Output Voltage of Input Current Monitor
    ICREF  Input Current Reference - sets the threshold for the input current limit
    DPM  Dynamic Power Management
    CSOP, CSON  Current Sense Output of battery positive and negative

    These pins are used with an external low-value series resistor to monitor the current to and from the battery pack.

    CSSP, CSSN  Current Sense Supply positive and negative

    These pins are used with an external low-value series resistor to monitor the current from the adapter supply.

    POR  Power on reset

12.2 Documentation Support

12.2.1 Related Documentation

  • bq24765 EVM (HPA349) User's Guide, SLUU415
  • bq24765 SMB evaluation software SLVC309

12.3 Community Resources

The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use.

    TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers.
    Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support.

12.4 Trademarks

E2E is a trademark of Texas Instruments.

All other trademarks are the property of their respective owners.

12.5 Electrostatic Discharge Caution

esds-image

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

12.6 Glossary

SLYZ022 — TI Glossary.

This glossary lists and explains terms, acronyms, and definitions.