JAJST93A October   2015  – February 2024 TPS3710

PRODUCTION DATA  

  1.   1
  2. 1 特長
  3. 2 アプリケーション
  4. 3 概要
  5. 4 Pin Configuration and Functions
  6. 5 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 Switching Characteristics
    8. 5.8 Typical Characteristics
  7. 6 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 Output (OUT)
      3. 6.3.3 Immunity to Input-Pin Voltage Transients
    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. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 VPULLUP to a Voltage Other Than VDD
      2. 7.1.2 Monitoring VDD
      3. 7.1.3 Monitoring a Voltage Other Than VDD
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Resistor Divider Selection
        2. 7.2.2.2 Pullup Resistor Selection
        3. 7.2.2.3 Input Supply Capacitor
        4. 7.2.2.4 Sense Capacitor
      3. 7.2.3 Application Curve
    3. 7.3 Do's and Don'ts
    4. 7.4 Power-Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Device Nomenclature
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 ドキュメントの更新通知を受け取る方法
    4. 8.4 サポート・リソース
    5. 8.5 Trademarks
    6. 8.6 静電気放電に関する注意事項
    7. 8.7 用語集
  10. 9 Revision History
  11. 10Mechanical, 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

7.2.2.1 Resistor Divider Selection

The resistor divider values and target threshold voltage can be calculated by using Equation 1 to determine VMON(UV).

Equation 1. GUID-802B58EA-7893-4106-8A93-33E799196B28-low.gif

where

  • R1 and R2 are the resistor values for the resistor divider on the SENSEx pins
  • VMON(UV) is the target voltage at which an undervoltage condition is detected

Choose RTOTAL ( = R1 + R2) so that the current through the divider is approximately 100 times higher than the input current at the SENSE pin. The resistors can have high values to minimize current consumption as a result of low input bias current without adding significant error to the resistive divider. For details on sizing input resistors, refer to application report SLVA450, Optimizing Resistor Dividers at a Comparator Input, available for download from www.ti.com.