SLUSBK6 July   2014 BQ25071

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Application Schematic
  5. 5 Revision History
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 Handling 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. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Input Overvoltage Protection
      2. 9.3.2 Undervoltage Lockout (UVLO)
      3. 9.3.3 External NTC Monitoring (TS)
      4. 9.3.4 50 mA LDO (LDO)
      5. 9.3.5 Charge Status Indicator (CHG)
      6. 9.3.6 Input Current Limit Control (EN)
    4. 9.4 Device Functional Modes
      1. 9.4.1 Charging Operation
        1. 9.4.1.1 Charger Operation with Minimum System Voltage Mode Enabled
        2. 9.4.1.2 Precharge Mode (V(BAT) ≤ V(LOWV))
        3. 9.4.1.3 Fast Charge Mode
      2. 9.4.2 Programmable Input Current Limit (ISET)
      3. 9.4.3 Thermal Regulation and Thermal Shutdown
  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 Selection of Input and Output Capacitors
        2. 10.2.2.2 Thermal Considerations
      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 Trademarks
    2. 13.2 Electrostatic Discharge Caution
    3. 13.3 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

11 Power Supply Recommendations

In a typical application, the system is powered by a USB port or USB wall adapter.

The wide input voltage range supports low cost and unregulated adapters.

The minimum input voltage - where the charging process starts with a reduced charging current - could be 3.75 V. The maximum supported input voltage is up to 10 V; the overvoltage protection kicks in at 10.5 V and the maximum input voltage rating is 30 V Input Rating.