SLUSCJ4B June   2017  – March 2022 BQ25600 , BQ25600D

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and 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. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 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 Regulation
        2. 8.3.3.2 Poor Source Qualification
        3. 8.3.3.3 Input Source Type Detection
          1. 8.3.3.3.1 D+/D– Detection Sets Input Current Limit in BQ25600D
          2. 8.3.3.3.2 PSEL Pins Sets Input Current Limit in BQ25600
        4. 8.3.3.4 Input Voltage Limit Threshold Setting (VINDPM Threshold)
        5. 8.3.3.5 Converter Power Up
      4. 8.3.4 Boost Mode Operation From Battery
      5. 8.3.5 Host Mode and Standalone Power Management
        1. 8.3.5.1 Host Mode and Default Mode in BQ25600 and BQ25600D
      6. 8.3.6 Power Path Management
      7. 8.3.7 Battery Charging Management
        1. 8.3.7.1 Autonomous Charging Cycle
        2. 8.3.7.2 Battery Charging Profile
        3. 8.3.7.3 Charging Termination
        4. 8.3.7.4 Thermistor Qualification
        5. 8.3.7.5 JEITA Guideline Compliance During Charging Mode
        6. 8.3.7.6 Boost Mode Thermistor Monitor During Battery Discharge Mode
        7. 8.3.7.7 Charging Safety Timer
      8. 8.3.8 Protections
        1. 8.3.8.1 Voltage and Current Monitoring in Converter Operation
          1. 8.3.8.1.1 Voltage and Current Monitoring in Buck Mode
            1. 8.3.8.1.1.1 Input Overvoltage (ACOV)
            2. 8.3.8.1.1.2 System Overvoltage Protection (SYSOVP)
        2. 8.3.8.2 Voltage and Current Monitoring in Boost Mode
          1. 8.3.8.2.1 VBUS Soft Start
          2. 8.3.8.2.2 VBUS Output Protection
          3. 8.3.8.2.3 Boost Mode Overvoltage Protection
        3. 8.3.8.3 Thermal Regulation and Thermal Shutdown
          1. 8.3.8.3.1 Thermal Protection in Buck Mode
          2. 8.3.8.3.2 Thermal Protection in Boost Mode
        4. 8.3.8.4 Battery Protection
          1. 8.3.8.4.1 Battery Overvoltage Protection (BATOVP)
          2. 8.3.8.4.2 Battery Overdischarge Protection
          3. 8.3.8.4.3 System Overcurrent Protection
    4. 8.4 Device Functional Modes
      1. 8.4.1 Narrow VDC Architecture
      2. 8.4.2 Dynamic Power Management
      3. 8.4.3 Supplement Mode
      4. 8.4.4 Shipping Mode and QON Pin
        1. 8.4.4.1 BATFET Disable Mode (Shipping Mode)
        2. 8.4.4.2 BATFET Enable (Exit Shipping Mode)
        3. 8.4.4.3 BATFET Full System Reset
        4. 8.4.4.4 QON Pin Operations
      5. 8.4.5 Status Outputs ( PG, STAT, INT )
        1. 8.4.5.1 Power Good Indicator ( PG Pin and PG_STAT Bit)
        2. 8.4.5.2 Charging Status Indicator (STAT)
        3. 8.4.5.3 Interrupt to Host ( INT)
    5. 8.5 Programming
      1. 8.5.1 Serial Interface
        1. 8.5.1.1 Data Validity
        2. 8.5.1.2 START and STOP Conditions
        3. 8.5.1.3 Byte Format
        4. 8.5.1.4 Acknowledge (ACK) and Not Acknowledge (NACK)
        5. 8.5.1.5 Slave Address and Data Direction Bit
        6. 8.5.1.6 Single Read and Write
        7. 8.5.1.7 Multi-Read and Multi-Write
    6. 8.6 Register Maps
      1. 8.6.1  REG00
      2. 8.6.2  REG01
      3. 8.6.3  REG02
      4. 8.6.4  REG03
      5. 8.6.5  REG04
      6. 8.6.6  REG05
      7. 8.6.7  REG06
      8. 8.6.8  REG07
      9. 8.6.9  REG08
      10. 8.6.10 REG09
      11. 8.6.11 REG0A
      12. 8.6.12 REG0B
  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
        3. 9.2.2.3 Output Capacitor
      3. 9.2.3 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 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

8.4.2 Dynamic Power Management

To meet maximum current limit in USB spec and avoid over loading the adapter, the device features Dynamic Power management (DPM), which continuously monitors the input current and input voltage. When input source is over-loaded, either the current exceeds the input current limit (IINDPM) or the voltage falls below the input voltage limit (VINDPM). The device then reduces the charge current until the input current falls below the input current limit and the input voltage rises above the input voltage limit.

When the charge current is reduced to zero, but the input source is still overloaded, the system voltage starts to drop. Once the system voltage falls below the battery voltage, the device automatically enters the supplement mode where the BATFET turns on and battery starts discharging so that the system is supported from both the input source and battery.

During DPM mode, the status register bits VDPM_STAT (VINDPM) or IDPM_STAT (IINDPM) goes high. shows the DPM response with 9-V/1.2-A adapter, 3.2-V battery, charge current and 3.5-V minimum system voltage setting.

GUID-9A653BA7-FDB3-405E-ABBC-064F44551A2B-low.gif Figure 8-8 DPM Response