SLUSF69A May   2024  – January 2025 BQ25186

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Thermal Information
    4. 5.4 Recommended Operating Conditions
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
      1. 6.1.1 Battery Charging Process
        1. 6.1.1.1 Trickle Charge
        2. 6.1.1.2 Pre-Charge
        3. 6.1.1.3 Fast Charge
        4. 6.1.1.4 Termination
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1  Input Voltage Based Dynamic Power Management (VINDPM)
      2. 6.3.2  Dynamic Power Path Management Mode (DPPM)
      3. 6.3.3  Battery Supplement Mode
      4. 6.3.4  Sleep Mode
      5. 6.3.5  SYS Power Control (SYS_MODE bit control)
        1. 6.3.5.1 SYS Pulldown Control
      6. 6.3.6  SYS Regulation
      7. 6.3.7  ILIM Control
      8. 6.3.8  Protection Mechanisms
        1. 6.3.8.1 Input Overvoltage Protection
        2. 6.3.8.2 Battery Undervoltage Lockout
        3. 6.3.8.3 Battery Overcurrent Protection
        4. 6.3.8.4 System Overvoltage Protection
        5. 6.3.8.5 System Short Protection
        6. 6.3.8.6 Thermal Protection and Thermal Regulation
        7. 6.3.8.7 Safety Timer and Watchdog Timer
      9. 6.3.9  Pushbutton Wake and Reset Input
        1. 6.3.9.1 Pushbutton Wake or Short Button Press Functions
        2. 6.3.9.2 Pushbutton Reset or Long Button Press Functions
      10. 6.3.10 15-Second Timeout for HW Reset
      11. 6.3.11 Hardware Reset
      12. 6.3.12 Software Reset
      13. 6.3.13 Interrupt Indicator (/INT) Pin
      14. 6.3.14 Power Good (PG) / General Purpose Output Pin
      15. 6.3.15 External NTC Monitoring (TS)
        1. 6.3.15.1 TS Biasing and Function
      16. 6.3.16 I2C Interface
        1. 6.3.16.1 F/S Mode Protocol
    4. 6.4 Device Functional Modes
    5. 6.5 Register Maps
      1. 6.5.1 I2C Registers
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
      3. 7.2.3 Application Curves
  9. 8 Power Supply Recommendations
  10. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 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. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

6.3.8.2 Battery Undervoltage Lockout

To prevent deep discharge of the battery, the device integrates a battery undervoltage lockout feature that disengages the BAT to SYS path when voltage at the battery drops below the programmed BUVLO voltagesetting present in the CHARGERCTRL1 register. BUVLO status can also be read when a valid voltage on VIN is present.