ZHCSP14 September   2021 TPS25854-Q1 , TPS25855-Q1

PRODUCTION DATA  

1. 1 特性
2. 2 应用
3. 3 说明
4. 4 Revision History
5. 5 说明（续）
6. 6 Device Comparison Table
7. 7 Pin Configuration and Functions
8. 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 Switching Characteristics
   8. 8.8 Typical Characteristics
9. 9 Parameter Measurement Information
10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
       1. 10.3.1  Power Down or Undervoltage Lockout
       2. 10.3.2  Input Overvoltage Protection (OVP) - Continuously Monitored
       3. 10.3.3  Buck Converter
       4. 10.3.4  FREQ/SYNC
       5. 10.3.5  Bootstrap Voltage (BOOT)
       6. 10.3.6  Minimum ON-time, Minimum OFF-time
       7. 10.3.7  Internal Compensation
       8. 10.3.8  Current Limit and Short Circuit Protection
          1. 10.3.8.1 USB Switch Programmable Current Limit (ILIM)
          2. 10.3.8.2 Cycle-by-Cycle Buck Current Limit
          3. 10.3.8.3 OUT Current Limit
       9. 10.3.9  Cable Compensation
       10. 10.3.10 Thermal Management With Temperature Sensing (TS) and OTSD
       11. 10.3.11 Thermal Shutdown
       12. 10.3.12 FAULT Indication
       13. 10.3.13 USB Specification Overview
       14. 10.3.14 USB Type-C® Basics
           1. 10.3.14.1 Configuration Channel
           2. 10.3.14.2 Detecting a Connection
           3. 10.3.14.3 Plug Polarity Detection
       15. 10.3.15 USB Port Operating Modes
           1. 10.3.15.1 USB Type-C® Mode
           2. 10.3.15.2 Dedicated Charging Port (DCP) Mode
              1. 10.3.15.2.1 DCP BC1.2 and YD/T 1591-2009
              2. 10.3.15.2.2 DCP Divider-Charging Scheme
              3. 10.3.15.2.3 DCP 1.2-V Charging Scheme
           3. 10.3.15.3 DCP Auto Mode
    4. 10.4 Device Functional Modes
       1. 10.4.1 Shutdown Mode
       2. 10.4.2 Active Mode
11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Applications
       1. 11.2.1 Design Requirements
       2. 11.2.2 Detailed Design Procedure
          1. 11.2.2.1 Output Voltage Setting
          2. 11.2.2.2 Switching Frequency
          3. 11.2.2.3 Inductor Selection
          4. 11.2.2.4 Output Capacitor Selection
          5. 11.2.2.5 Input Capacitor Selection
          6. 11.2.2.6 Bootstrap Capacitor Selection
          7. 11.2.2.7 Undervoltage Lockout Set-Point
          8. 11.2.2.8 Cable Compensation Set-Point
          9. 11.2.2.9 FAULT, POL, and THERM_WARN Resistor Selection
       3. 11.2.3 Application Curves
12. 12Power Supply Recommendations
13. 13Layout
    1. 13.1 Layout Guidelines
    2. 13.2 Layout Example
    3. 13.3 Ground Plane and Thermal Considerations
14. 14Device and Documentation Support
    1. 14.1 接收文档更新通知
    2. 14.2 支持资源
    3. 14.3 Trademarks
    4. 14.4 Electrostatic Discharge Caution
    5. 14.5 术语表
15. 15Mechanical, Packaging, and Orderable Information