SLUSF65B October   2023  – August 2026 BQ25185

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 Precharge
        3. 6.1.1.3 Fast Charge
        4. 6.1.1.4 ISET Pin Detection
        5. 6.1.1.5 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 Regulation
      6. 6.3.6  ILIM/VSET Control
      7. 6.3.7  Protection Mechanisms
        1. 6.3.7.1 Input Overvoltage Protection
        2. 6.3.7.2 Battery Undervoltage Lockout
        3. 6.3.7.3 Battery Overcurrent Protection
        4. 6.3.7.4 System Overvoltage Protection
        5. 6.3.7.5 System Short Protection
        6. 6.3.7.6 Thermal Protection and Thermal Regulation
        7. 6.3.7.7 Safety Timer
      8. 6.3.8  Pushbutton Long Press Function
      9. 6.3.9  External NTC Monitoring (TS)
        1. 6.3.9.1 TS Biasing and Function
      10. 6.3.10 Status Pins
    4. 6.4 Device Functional Modes
  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
        1. 7.2.2.1 Input Current and Battery Regulation Voltage - ILIM/VSET
        2. 7.2.2.2 Fast Charge Current- ISET
        3. 7.2.2.3 Recommended Passive Components
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Third-Party Products Disclaimer
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

1 Features

  • 1A linear battery charger
    • 3.0V to 18V input voltage operating range
    • 25V tolerant input voltage
    • External resistor programmable operation
      • ILIM/VSET pin sets battery regulation voltage to 3.6V, 3.65V, 4.02V, 4.1V, 4.2V, 4.35V, or 4.4V
      • ILIM/VSET pin sets input current limit to 100mA, 500mA, or 1100mA
      • ISET pin sets charge current from 5mA to 1A
    • Supports Li-ion, Li-poly, and LiFePO4 chemistries
    • 115mΩ battery FET on-resistance
    • Supports up to 3.125A discharge current for high system loads
  • Power path management for powering the system and charging the battery
    • Regulated system voltage (SYS) at 4.5V
    • Configurable input current limit
    • Supports USB suspend mode
    • Battery tracking input voltage dynamic power management (VINDPM) for high-impedance input sources
    • Dynamic power path management optimizes charging from weak adapters
  • Ultra-low quiescent current
    • 4μA in battery-only mode
    • 30μA input adapter IQ in sleep mode
    • 3.2μA battery discharge current in factory mode
  • Integrated fault protection
    • Input overvoltage protection (VIN_OVP)
    • Battery undervoltage protection (BUVLO)
    • Battery short protection (BATSC)
    • Battery overcurrent protection (BATOCP)
    • Input current limit protection (ILIM)
    • Thermal regulation (TREG) and thermal shutdown (TSHUT)
    • Battery thermal fault protection (TS)
    • Safety timer fault

    • System short protection

    • System overvoltage protection

    • Short and open protection on the ISET and ILIM/VSET pins