ZHCS447C SEPTEMBER   2011  – April  2018 TPS84210

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      简化应用
      2.      效率与输出电流间的关系
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Package Specifications
    3. 6.3 Thermal Information
    4. 6.4 Electrical Characteristics
    5. 6.5 Switching Characteristics
    6. 6.6 Typical Characteristics (VIN = 5 V)
    7. 6.7 Typical Characteristics (VIN = 3.3 V)
  7. 7 Functional Block Diagram
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Adjusting The Output Voltage
  9. 9 Capacitor Recommendations For The TPS84210 Power Supply
    1. 9.1 Capacitor Technologies
      1. 9.1.1 Electrolytic, Polymer-Electrolytic Capacitors
      2. 9.1.2 Ceramic Capacitors
      3. 9.1.3 Tantalum, Polymer-Tantalum Capacitors
    2. 9.2 Input Capacitor
    3. 9.3 Output Capacitor
  10. 10Transient Response
  11. 11Application Schematics
  12. 12Power Good (PWRGD)
  13. 13Power-Up Characteristics
  14. 14Remote Sense
  15. 15Output On/Off Inhibit (INH)
  16. 16Slow Start (SS/TR)
  17. 17Overcurrent Protection
  18. 18Synchronization (CLK)
  19. 19Sequencing (SS/TR)
  20. 20Programmable Undervoltage Lockout (UVLO)
  21. 21Thermal Shutdown
  22. 22Layout Guidelines
  23. 23Layout Example
  24. 24EMI
  25. 25器件和文档支持
    1. 25.1 接收文档更新通知
    2. 25.2 社区资源
    3. 25.3 商标
    4. 25.4 静电放电警告
    5. 25.5 术语表
  26. 26机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

16 Slow Start (SS/TR)

Connecting the STSEL pin to AGND and leaving SS/TR pin open enables the internal SS capacitor with a slow start interval of approximately 1.1 ms. Adding additional capacitance between the SS pin and AGND increases the slow start time. Table 6 shows an additional SS capacitor connected to the SS/TR pin and the STSEL pin connected to AGND. See Table 6 below for SS capacitor values and timing interval.

TPS84210 v11119_lvsar5.gifFigure 25. Slow-Start Capacitor (CSS) and STSEL Connection

Table 6. Slow-Start Capacitor Values and Slow-Start Time

CSS (pF) open 2200 4700 10000 15000 22000 25000
SS Time (msec) 1.1 1.9 2.8 4.6 6.4 8.8 9.8