ZHCSIW5C March   2019  – December 2021 TLV4021 , TLV4031 , TLV4041 , TLV4051

PRODUCTION DATA  

  1. 特性
  2. 应用
  3. 说明
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Switching Characteristics
  7. Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power ON Reset (POR)
      2. 8.4.2 Input (IN)
      3. 8.4.3 Switching Thresholds and Hysteresis (VHYS)
      4. 8.4.4 Output (OUT)
  9. Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Monitoring (V+)
      2. 9.1.2 Monitoring a Voltage Other than (V+)
      3. 9.1.3 VPULLUP to a Voltage Other than (V+)
    2. 9.2 Typical Application
      1. 9.2.1 Under-Voltage Detection
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curve
      2. 9.2.2 Additional Application Information
        1. 9.2.2.1 Pull-up Resistor Selection
        2. 9.2.2.2 Input Supply Capacitor
        3. 9.2.2.3 Sense Capacitor
    3. 9.3 What to Do and What Not to Do
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 接收文档更新通知
    2. 12.2 支持资源
    3. 12.3 Trademarks
    4. 12.4 静电放电警告
    5. 12.5 术语表
  13. 13Mechanical, Packaging, and Orderable Information

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

Monitoring a Voltage Other than (V+)

Some applications monitor rails other than the one that is powering the comparator. In these applications the resistor divider used to set the desired threshold is connected to the rail that is being monitored.

GUID-A36187BB-FE07-4FE9-A760-81E942E59C2F-low.gifFigure 9-2 Monitoring a Voltage Other than the Supply

The TLV40x1Ry can monitor a voltage greater than the maximum (V+) with the use of an external resistor divider network. Likewise, the TLV40x1 can monitor voltages as low as the internal reference voltage (0.2 V, 0.5 V, or 1.2 V). The TLV40x1Ry also has the advantage of being able to monitor high impedance sources since the input bias current of the input (IN) is low. This provides an advantage over voltage supervisors that can only monitor the voltage rail that is powering them. Supervisors configured in this fashion have limitations in source impedance and minimum sensing voltage.