SLUSEC9B October   2020  – July 2024 BQ25618E , BQ25619E

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Description (continued)
  6. 5 Device Comparison Table
  7. 6 Pin Configuration and Functions
  8. 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 Timing Requirements
    7. 7.7 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Power-On-Reset (POR)
      2. 8.3.2 Device Power Up From Battery Without Input Source
      3. 8.3.3 Power Up From Input Source
        1. 8.3.3.1 Power Up REGN LDO
        2. 8.3.3.2 Poor Source Qualification
        3. 8.3.3.3 Input Source Type Detection (IINDPM Threshold)
          1. 8.3.3.3.1 PSEL Pins Sets Input Current Limit
        4. 8.3.3.4 Input Voltage Limit Threshold Setting (VINDPM Threshold)
        5. 8.3.3.5 Power Up Converter in Buck Mode
        6. 8.3.3.6 HIZ Mode with Adapter Present
      4. 8.3.4 Power Path Management
        1. 8.3.4.1 Narrow Voltage DC (NVDC) Architecture
        2. 8.3.4.2 Dynamic Power Management
        3. 8.3.4.3 Supplement Mode
      5. 8.3.5 Battery Charging Management
        1. 8.3.5.1 Autonomous Charging Cycle
        2. 8.3.5.2 Battery Charging Profile
        3. 8.3.5.3 Charging Termination
        4. 8.3.5.4 Thermistor Qualification
          1. 8.3.5.4.1 JEITA Guideline Compliance During Charging Mode
        5. 8.3.5.5 Charging Safety Timer
      6. 8.3.6 Ship Mode and QON Pin
        1. 8.3.6.1 BATFET Disable (Enter Ship Mode)
        2. 8.3.6.2 BATFET Enable (Exit Ship Mode)
        3. 8.3.6.3 BATFET Full System Reset
      7. 8.3.7 Status Outputs ( STAT, INT , PG )
        1. 8.3.7.1 Power Good Indicator (PG_STAT Bit; BQ25619E only)
        2. 8.3.7.2 Charging Status Indicator (STAT)
        3. 8.3.7.3 Interrupt to Host ( INT)
      8. 8.3.8 Protections
        1. 8.3.8.1 Voltage and Current Monitoring in Buck Mode
          1. 8.3.8.1.1 Input Overvoltage Protection (ACOV)
          2. 8.3.8.1.2 System Overvoltage Protection (SYSOVP)
        2. 8.3.8.2 Thermal Regulation and Thermal Shutdown
          1. 8.3.8.2.1 Thermal Protection in Buck Mode
        3. 8.3.8.3 Battery Protection
          1. 8.3.8.3.1 Battery Overvoltage Protection (BATOVP)
          2. 8.3.8.3.2 Battery Overdischarge Protection
          3. 8.3.8.3.3 System Overcurrent Protection
      9. 8.3.9 Serial Interface
        1. 8.3.9.1 Data Validity
        2. 8.3.9.2 START and STOP Conditions
        3. 8.3.9.3 Byte Format
        4. 8.3.9.4 Acknowledge (ACK) and Not Acknowledge (NACK)
        5. 8.3.9.5 Slave Address and Data Direction Bit
        6. 8.3.9.6 Single Read and Write
        7. 8.3.9.7 Multi-Read and Multi-Write
    4. 8.4 Device Functional Modes
      1. 8.4.1 Host Mode and Default Mode
    5. 8.5 Register Maps
  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 Inductor Selection
        2. 9.2.2.2 Input Capacitor and Resistor
        3. 9.2.2.3 Output Capacitor
      3. 9.2.3 Application Curves
  11. 10Power Supply Recommendations
  12. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  13. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Support Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  14. 13Revision History
  15. 14Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RTW|24
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • High-efficiency, 1.5MHz, synchronous Switch Mode buck charger
    • 95.5% charge efficiency at 0.5A and 94.5% efficiency at 1A
    • ±0.5% charge voltage regulation (10mV step)
    • I2C programmable JEITA profile of charge voltage, current and temperature thresholds
    • Low termination current with high accuracy 20mA±10mA
    • Small inductor form factor of 2.5 x 2.0 x 1.0mm3
  • Single input supporting USB input, high-voltage adapter, or wireless power
    • Support 4V to 13.5V input voltage range with 22V absolute max input rating
    • Programmable input current limit (IINDPM) with I2C (100mA to 3.2A, 100mA/step)
    • Maximum power tracking by input voltage limit (VINDPM) up to 5.4V
    • VINDPM threshold automatically tracks battery voltage
  • Narrow voltage DC (NVDC) power path management
    • System instant-on with no battery or deeply discharged battery
  • Flexible I2C configuration and autonomous charging for optimal system performance
  • High integration includes all MOSFETs, current sensing and loop compensation
  • Low RDSON 19.5mΩ BATFET to minimize charging loss and extend battery run time
    • BATFET control for Ship Mode, and full system reset with and without adapter
  • 7µA low battery leakage current in Ship Mode
  • 9.5µA low battery leakage current with system standby
  • High accuracy battery charging profile
    • ±6% charge current regulation
    • ±7.5% input current regulation
    • Remote battery sensing to charge faster
    • Programmable top-off timer for full battery charging