SNVSB04C March   2019  – December 2021 TLV4021 , TLV4031 , TLV4041 , TLV4051

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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. 7 Typical Characteristics
  8. 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. 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 Receiving Notification of Documentation Updates
    2. 12.2 Support Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.4.4 Output (OUT)

The TLV4041 and TLV4051 feature a push-pull output stage which eliminates the need for an external pull-up resistor while providing a low impedance output driver. Likewise, the TLV4021 and TLV4031 feature an open-drain output stage which enables the output logic levels to be pulled-up to an external source as high as 5.5 V independent of the supply voltage.

In a typical TLV40x1 application, OUT is connected to an enable input of a processor or a voltage regulator such as a dc-dc converter or low-dropout regulator (LDO). The open-drain output versions (TLV4021/4031) are used if the power supply of the comparator is different than the supply voltage of the device being controlled. In this usage case, a pull-up resistor holds OUT high when the comparator output goes high impedance. The correct interface-voltage level is provided (also known as level-shifting) by connecting the pull-up resistor on OUT to the appropriate voltage rail. The TLV4021/4031 output can be pulled up to 5.5 V, independent of the device supply voltage (VS). However, if level-shifting is not required, the push-pull output versions (TLV4041/4051) should be utilized in order to eliminate the need for the pull-up resistor.