SLUSEG2A September   2022  – October 2022 BQ25620 , BQ25622

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Description (continued)
  6. Device Comparison
  7. Pin Configuration and Functions
  8. Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Timing Requirements
    7. 8.7 Typical Characteristics
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Power-On-Reset (POR)
      2. 9.3.2 Device Power Up from Battery
      3. 9.3.3 Device Power Up from Input Source
        1. 9.3.3.1 REGN LDO Power Up
        2. 9.3.3.2 Poor Source Qualification
        3. 9.3.3.3 D+/D– Detection Sets Input Current Limit (BQ25620 Only)
        4. 9.3.3.4 ILIM Pin (BQ25622 Only)
        5. 9.3.3.5 Input Voltage Limit Threshold Setting (VINDPM Threshold)
        6. 9.3.3.6 Converter Power-Up
      4. 9.3.4 Power Path Management
        1. 9.3.4.1 Narrow VDC Architecture
        2. 9.3.4.2 Dynamic Power Management
        3. 9.3.4.3 High Impedance Mode
      5. 9.3.5 Battery Charging Management
        1. 9.3.5.1 Autonomous Charging Cycle
        2. 9.3.5.2 Battery Charging Profile
        3. 9.3.5.3 Charging Termination
        4. 9.3.5.4 Thermistor Qualification
          1. 9.3.5.4.1 Advanced Temperature Profile in Charge Mode
          2. 9.3.5.4.2 TS Pin Thermistor Configuration
          3. 9.3.5.4.3 Cold/Hot Temperature Window in OTG Mode
          4. 9.3.5.4.4 JEITA Charge Rate Scaling
          5. 9.3.5.4.5 TS_BIAS Pin (BQ25622 Only)
        5. 9.3.5.5 Charging Safety Timers
      6. 9.3.6 USB On-The-Go (OTG)
        1. 9.3.6.1 Boost OTG Mode
      7. 9.3.7 Integrated 12-Bit ADC for Monitoring
      8. 9.3.8 Status Outputs ( PG, STAT, INT)
        1. 9.3.8.1 PG Pin Power Good Indicator
        2. 9.3.8.2 Charging Status Indicator (STAT)
        3. 9.3.8.3 Interrupt to Host ( INT)
      9. 9.3.9 BATFET Control
        1. 9.3.9.1 Shutdown Mode
        2. 9.3.9.2 Ship Mode
        3. 9.3.9.3 System Power Reset
    4. 9.4 Device Functional Modes
      1. 9.4.1 Host Mode and Default Mode
      2. 9.4.2 Register Bit Reset
    5. 9.5 Programming
      1. 9.5.1 Serial Interface
        1. 9.5.1.1 Data Validity
        2. 9.5.1.2 START and STOP Conditions
        3. 9.5.1.3 Byte Format
        4. 9.5.1.4 Acknowledge (ACK) and Not Acknowledge (NACK)
        5. 9.5.1.5 Target Address and Data Direction Bit
        6. 9.5.1.6 Single Write and Read
        7. 9.5.1.7 Multi-Write and Multi-Read
    6. 9.6 Register Maps
      1. 9.6.1 Register Programming
      2. 9.6.2 BQ25620 Registers
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Inductor Selection
        2. 10.2.2.2 Input Capacitor
        3. 10.2.2.3 Output Capacitor
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Third-Party Products Disclaimer
    2. 13.2 Documentation Support
      1. 13.2.1 Related Documentation
    3. 13.3 Receiving Notification of Documentation Updates
    4. 13.4 Support Resources
    5. 13.5 Trademarks
    6. 13.6 Electrostatic Discharge Caution
    7. 13.7 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

Features

  • High-efficiency, 1.5-MHz, synchronous switching mode buck charger for single cell battery
    • >90% efficiency down to 25-mA output current from 5-V input
    • Charge termination from 10 mA to 620 mA, 10-mA steps
    • Flexible JEITA profile for safe charging over temperature
  • BATFET control to support shutdown, ship mode and full system reset
    • 1.5-μA quiescent current in battery only mode
    • 0.15-μA battery leakage current in ship mode
    • 0.1-μA battery leakage current in shutdown
  • Supports USB On-The-Go (OTG)
    • Boost mode operation supporting 3.84-V to 9.6-V output
    • >90% boost efficiency down to 100-mA OTG current for 5-V VBUS
  • Supports a wide range of input sources
    • 3.9-V to 18-V wide input operating voltage range with 26-V absolute maximum input voltage
    • Maximizes source power with input voltage regulation (VINDPM) and input current regulation (IINDPM)
    • VINDPM threshold automatically tracks battery voltage
  • Efficient battery operation with 15-mΩ BATFET
  • Narrow VDC (NVDC) power path management
    • System instant-on with depleted or no battery
    • Battery supplement when adapter is fully loaded
  • Flexible autonomous or I2C-controlled modes
  • Integrated 12-bit ADC for voltage, current, temperature monitoring
  • High accuracy
    • ±0.5% charge voltage regulation
    • ±5% charge current regulation
    • ±5% input current regulation
  • Safety
    • Thermal regulation and thermal shutdown
    • Input, system, battery overvoltage protection
    • Battery, converter overcurrent protection
    • Charging safety timer