SLUSDF8B June   2019  – September 2019 BQ25618 , BQ25619

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Simplified Application
      1.      Device Images
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 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. Table 1. Thermal Information
    6. 7.5      Electrical Characteristics
    7. 7.6      Timing Requirements
    8. 7.7      Typical Characteristics
  8. 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  Boost Mode Operation From Battery
      5. 8.3.5  Power Path Management
        1. 8.3.5.1 Narrow VDC Architecture
        2. 8.3.5.2 Dynamic Power Management
        3. 8.3.5.3 Supplement Mode
      6. 8.3.6  Battery Charging Management
        1. 8.3.6.1 Autonomous Charging Cycle
        2. 8.3.6.2 Battery Charging Profile
        3. 8.3.6.3 Charging Termination
        4. 8.3.6.4 Thermistor Qualification
          1. 8.3.6.4.1 JEITA Guideline Compliance During Charging Mode
          2. 8.3.6.4.2 Boost Mode Thermistor Monitor During Battery Discharge Mode
        5. 8.3.6.5 Charging Safety Timer
      7. 8.3.7  Ship Mode and QON Pin
        1. 8.3.7.1 BATFET Disable (Enter Ship Mode)
        2. 8.3.7.2 BATFET Enable (Exit Ship Mode)
        3. 8.3.7.3 BATFET Full System Reset
      8. 8.3.8  Status Outputs (STAT, INT, PMID_GOOD)
        1. 8.3.8.1 Power Good Indicator ( PG_STAT Bit)
        2. 8.3.8.2 Charging Status Indicator (STAT)
        3. 8.3.8.3 Interrupt to Host (INT)
        4. 8.3.8.4 PMID Voltage Indicator (PMID_GOOD)
      9. 8.3.9  Protections
        1. 8.3.9.1 Voltage and Current Monitoring in Buck Mode
          1. 8.3.9.1.1 Input Over-Voltage Protection (ACOV)
          2. 8.3.9.1.2 System Over-Voltage Protection (SYSOVP)
        2. 8.3.9.2 Voltage and Current Monitoring in Boost Mode
          1. 8.3.9.2.1 Boost Mode Over-Voltage Protection
          2. 8.3.9.2.2 PMID Over-Current Protection
        3. 8.3.9.3 Thermal Regulation and Thermal Shutdown
          1. 8.3.9.3.1 Thermal Protection in Buck Mode
          2. 8.3.9.3.2 Thermal Protection in Boost Mode
        4. 8.3.9.4 Battery Protection
          1. 8.3.9.4.1 Battery Over-Voltage Protection (BATOVP)
          2. 8.3.9.4.2 Battery Over-Discharge Protection
          3. 8.3.9.4.3 System Over-Current Protection
      10. 8.3.10 Serial Interface
        1. 8.3.10.1 Data Validity
        2. 8.3.10.2 START and STOP Conditions
        3. 8.3.10.3 Byte Format
        4. 8.3.10.4 Acknowledge (ACK) and Not Acknowledge (NACK)
        5. 8.3.10.5 Slave Address and Data Direction Bit
        6. 8.3.10.6 Single Read and Write
        7. 8.3.10.7 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
      1. 8.5.1  Input Current Limit Register (Address = 00h) [reset = 17h]
        1. Table 8. REG00 Field Descriptions
      2. 8.5.2  Charger Control 0 Register (Address = 01h) [reset = 1Ah]
        1. Table 9. REG01 Field Descriptions
      3. 8.5.3  Charge Current Limit Register (Address = 02h) [reset = 91h]
        1. Table 10. REG02 Field Descriptions
      4. 8.5.4  Precharge and Termination Current Limit Register (Address = 03h) [reset = 12h]
        1. Table 11. REG03 Field Descriptions
      5. 8.5.5  Battery Voltage Limit Register (Address = 04h) [reset = 40h]
        1. Table 12. REG04 Field Descriptions
      6. 8.5.6  Charger Control 1 Register (Address = 05h) [reset = 9Eh]
        1. Table 13. REG05 Field Descriptions
      7. 8.5.7  Charger Control 2 Register (Address = 06h) [reset = E6h]
        1. Table 14. REG06 Field Descriptions
      8. 8.5.8  Charger Control 3 Register (Address = 07h) [reset = 4Ch]
        1. Table 15. REG07 Field Descriptions
      9. 8.5.9  Charger Status 0 Register (Address = 08h)
        1. Table 16. REG08 Field Descriptions
      10. 8.5.10 Charger Status 1 Register (Address = 09h)
        1. Table 17. REG09 Field Descriptions
      11. 8.5.11 Charger Status 2 Register (Address = 0Ah)
        1. Table 18. REG0A Field Descriptions
      12. 8.5.12 Part Information Register (Address = 0Bh)
        1. Table 19. REG0B Field Descriptions
      13. 8.5.13 Charger Control 4 Register (Address = 0Ch) [reset = 75h]
        1. Table 20. REG0C Field Descriptions
  9. 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. 9.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 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 Related Links
    4. 12.4 Receiving Notification of Documentation Updates
    5. 12.5 Support Resources
    6. 12.6 Trademarks
    7. 12.7 Electrostatic Discharge Caution
    8. 12.8 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Single chip solution to charge wearable accessories from adapter or battery
  • High-efficiency, 1.5-MHz, synchronous switch-mode buck charger
    • 95.5% Charge efficiency at 0.5 A and 94.5% efficiency at 1 A
    • ±0.5% Charge voltage regulation (10-mV step)
    • I2C Programmable JEITA profile of charge voltage, current and temperature thresholds
    • Low termination current with high accuracy 20 mA±10 mA
    • Small inductor form factor of 2.5x2.0x1.0 mm3
  • Boost mode with output from 4.6 V to 5.15 V
    • 94% Boost efficiency at 1-A output
    • Integrated control to switch between charge and boost mode
    • PMID_GOOD Pin control external PMOS FET for protection against fault conditions
  • Single input to support USB input and high-voltage adapter and wireless power
    • Support 4-V to 13.5-V input voltage range with 22-V absolute max input rating
    • Programmable input current limit (IINDPM) with I2C (100-mA to 3.2-A, 100-mA/step)
    • Maximum power tracking by input voltage limit (VINDPM) up to 5.4 V
    • VINDPM Threshold automatically tracks battery voltage
  • Narrow VDC (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 19.5-mΩ BATFET to minimize charging loss and extend battery run time
    • BATFET Control for ship mode, and full system reset with and without adapter
  • 7-µA Low battery leakage current in ship mode
  • 9.5-µA 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