ZHCSLZ4D May   2020  – September 2021 TPS25850-Q1 , TPS25851-Q1 , TPS25852-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  Selectable Output Voltage (VSET)
       9. 10.3.9  Current Limit and Short Circuit Protection
          1. 10.3.9.1 USB Switch Programmable Current Limit (ILIM)
          2. 10.3.9.2 Interlocking for Two-Level USB Switch Current Limit
          3. 10.3.9.3 Cycle-by-Cycle Buck Current Limit
          4. 10.3.9.4 OUT Current Limit
       10. 10.3.10 Cable Compensation
       11. 10.3.11 Thermal Management With Temperature Sensing (TS) and OTSD
       12. 10.3.12 Thermal Shutdown
       13. 10.3.13 USB Enable On/Off Control (TPS25852-Q1)
       14. 10.3.14 FAULT Indication (TPS25851-Q1 and TPS25852-Q1)
       15. 10.3.15 USB Specification Overview
       16. 10.3.16 USB Type-C® Basics
           1. 10.3.16.1 Configuration Channel
           2. 10.3.16.2 Detecting a Connection
           3. 10.3.16.3 Plug Polarity Detection (TPS25851-Q1)
       17. 10.3.17 USB Port Operating Modes
           1. 10.3.17.1 USB Type-C® Mode
           2. 10.3.17.2 Dedicated Charging Port (DCP) Mode (TPS25850-Q1 Only)
              1. 10.3.17.2.1 DCP BC1.2 and YD/T 1591-2009
              2. 10.3.17.2.2 DCP Divider-Charging Scheme
              3. 10.3.17.2.3 DCP 1.2-V Charging Scheme
           3. 10.3.17.3 DCP Auto Mode (TPS25850-Q1)
    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
       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