SNVSB04B March   2019  – June 2020 TLV4021 , TLV4031 , TLV4041 , TLV4051

UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
    1.     Device Images
      1.      TLV40x1 Configurations
  4. Revision History
  5. Pin Configuration and Functions
    1.     DSBGA Package Pin Functions
    2.     SOT-23 Pin 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. 6.7 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Power ON Reset (POR)
      2. 7.4.2 Input (IN)
      3. 7.4.3 Switching Thresholds and Hysteresis (VHYS)
      4. 7.4.4 Output (OUT)
  8. Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Monitoring (V+)
      2. 8.1.2 Monitoring a Voltage Other than (V+)
      3. 8.1.3 VPULLUP to a Voltage Other than (V+)
    2. 8.2 Typical Application
      1. 8.2.1 Under-Voltage Detection
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Additional Application Information
        1. 8.2.2.1 Pull-up Resistor Selection
        2. 8.2.2.2 Input Supply Capacitor
        3. 8.2.2.3 Sense Capacitor
    3. 8.3 What to Do and What Not to Do
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Related Links
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

Under-Voltage Detection

Under-voltage detection is frequently required in battery-powered, portable electronics to alert the system that a battery voltage has dropped below the usable voltage level. Figure 44 shows a simple under-voltage detection circuit using the TLV4041R1 which is a non-inverting comparator with an integrated 1.2 V reference and a push-pull output stage. The non-inverting TLV4041 option was selected in this example since the micro-controller required an active low signal when an undervoltage level occurs. However, if an active high signal was required, the TLV4051 option with an inverting input stage would be utilized.

TLV4021 TLV4031 TLV4041 TLV4051 UV.gifFigure 44. Under-Voltage Detection