JAJSC28A January   2015  – February 2024 TPS3702

PRODUCTION DATA  

  1.   1
  2. 特長
  3. アプリケーション
  4. 概要
  5. Pin Configuration and Functions
  6. Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Typical Characteristics
  7. Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Input (SENSE)
      2. 6.3.2 Outputs (UV, OV)
      3. 6.3.3 User-Configurable Accuracy Band (SET)
    4. 6.4 Device Functional Modes
      1. 6.4.1 Normal Operation (VDD > UVLO)
      2. 6.4.2 Undervoltage Lockout (V(POR) < VDD < UVLO)
      3. 6.4.3 Power-On Reset (VDD < V(POR))
  8. Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Window Voltage Detector Considerations
      2. 7.1.2 Input and Output Configurations
      3. 7.1.3 Immunity to SENSE Pin Voltage Transients
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
      3. 7.2.3 Application Curves
  9. Power Supply Recommendations
  10. Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Development Support
        1. 10.1.1.1 Evaluation Module
      2. 10.1.2 Device Nomenclature
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 サポート・リソース
    4. 10.4 Trademarks
    5. 10.5 静電気放電に関する注意事項
    6. 10.6 用語集
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ(パッケージ|ピン)
サーマルパッド・メカニカル・データ
発注情報

Detailed Design Procedure

Determine which version of the TPS3702 best suits the application nominal rail and window tolerances. See Table 10-1 for selecting the appropriate device number for the application needs. If the nominal rail voltage to be monitored is not listed as an option, a resistor divider can be used to reduce the voltage to a nominal voltage that is available. The current ISENSE causes an error in the voltage detected at the SENSE pin because the SENSE current only flows through the resistor at the top of the resistor divider. The larger the current through the resistor divider to ground, the smaller this error can be. To optimize this resistor divider, refer to application report Optimizing Resistor Dividers at a Comparator Input (SLVA450) for more information.

When the outputs switch to the high-Z state, the rise time of the UV or OV node depends on the pull-up resistance and the capacitance on that node. Choose pull-up resistors that satisfy both the downstream timing requirements and the sink current required to have a VOL low enough for the application; 10kΩ to 1MΩ resistors are a good choice for low-capacitive loads.