SLUSF65 October   2023 BQ25185

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Description (continued)
  7. 6 Pin Configuration and Functions
  8. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Thermal Information
    4. 7.4 Recommended Operating Conditions
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
      1. 8.1.1 Battery Charging Process
        1. 8.1.1.1 Trickle Charge
        2. 8.1.1.2 Pre-Charge
        3. 8.1.1.3 Fast Charge
        4. 8.1.1.4 ISET Pin Detection
        5. 8.1.1.5 Termination
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Input Voltage Based Dynamic Power Management (VINDPM)
      2. 8.3.2  Dynamic Power Path Management Mode (DPPM)
      3. 8.3.3  Battery Supplement Mode
      4. 8.3.4  Sleep Mode
      5. 8.3.5  SYS Regulation
      6. 8.3.6  ILIM/VSET Control
      7. 8.3.7  Protection Mechanisms
        1. 8.3.7.1 Input Overvoltage Protection
        2. 8.3.7.2 Battery Undervoltage Lockout
        3. 8.3.7.3 Battery Overcurrent Protection
        4. 8.3.7.4 System Overvoltage Protection
        5. 8.3.7.5 System Short Protection
        6. 8.3.7.6 Thermal Protection and Thermal Regulation
        7. 8.3.7.7 Safety Timer
      8. 8.3.8  Pushbutton Wake and Reset Input
        1. 8.3.8.1 Pushbutton Long Button Press Function - Factory mode
      9. 8.3.9  External NTC Monitoring (TS)
        1. 8.3.9.1 TS Biasing and Function
      10. 8.3.10 Status Pins
    4. 8.4 Device Functional Modes
  10. 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 Input Current and Battery Regulation Voltage - ILIM/VSET
        2. 9.2.2.2 Fast Charge Current- ISET
        3. 9.2.2.3 Recommended Passive Components
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Third-Party Products Disclaimer
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

8.3.9.1 TS Biasing and Function

The device is configured to a simpler HOT/COLD function only. Two temperature thresholds are monitored: the cold battery threshold, and the hot battery threshold. These temperatures correspond to the VCOLD and VHOT thresholds in the Electrical Characteristics table. Charging and safety timers are suspended when VTS < VHOT or VTS > VCOLD.

For devices where the TS function is not needed, tie a 10-kΩ resistor to the TS/MR pin.

There is an active voltage clamp present on this device which will prevent the voltage on TS/MR pin from rising above the VTS_CLAMP threshold. This will particularly be ON when the TS/MR pin is floating.

When the button is detected as a “press” during the charging process, charging will be momentarily suspended till the button is high again. When charging is disabled in any of the TS faults, the trickle charging is also disabled.