SNOSDE7A december   2022  – august 2023 TLV1851 , TLV1861

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
    1.     Pin Configuration: TLV1851 and TLV1861
    2.     Pin Configurations: TLV1852 and TLV1862
    3.     Pin Configurations: TLV1854 and TLV1864
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Thermal Information
    4. 6.4 Recommended Operating Conditions
    5. 6.5 Electrical Characteristics
    6. 6.6 Switching Characteristics
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Inputs
        1. 7.4.1.1 Operating Common-Mode Ranges
        2. 7.4.1.2 Fail-Safe Inputs
        3. 7.4.1.3 Unused Inputs
      2. 7.4.2 Internal Hysteresis
      3. 7.4.3 Outputs
        1. 7.4.3.1 TLV185x Push-Pull Output
        2. 7.4.3.2 TLV186x Open-Drain Output
      4. 7.4.4 ESD Protection
        1. 7.4.4.1 Inputs
        2. 7.4.4.2 Outputs
      5. 7.4.5 Power-On Reset (POR)
      6. 7.4.6 Reverse Battery Protection
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Basic Comparator Definitions
        1. 8.1.1.1 Operation
        2. 8.1.1.2 Propagation Delay
        3. 8.1.1.3 Overdrive Voltage
      2. 8.1.2 Hysteresis
        1. 8.1.2.1 Inverting Comparator With Hysteresis
        2. 8.1.2.2 Non-Inverting Comparator With Hysteresis
        3. 8.1.2.3 Inverting and Non-Inverting Hysteresis using Open-Drain Output
    2. 8.2 Typical Applications
      1. 8.2.1 Window Comparator
        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 Undervoltage Detection
      3. 8.2.3 Reverse Battery and Overvoltage Protection Scheme
    3. 8.3 Power Supply Recommendations
  10. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

8.2.3 Reverse Battery and Overvoltage Protection Scheme

In battery powered applications, it is essential to have safeguards in place to protect the internal electronics against reverse battery connections. Figure 8-10 shows a protection scheme using TLV1851 to prevent damage to the overall system in the events of both improper battery installation and overvoltage conditions. Under either of these instances, Q1 and Q2 will open, thus protecting the system from ever seeing reverse battery or overvoltage conditions.

GUID-20230313-SS0I-GRK2-F7QQ-ZRPJSTKTHQZH-low.svgFigure 8-10 Reverse Battery and Overvoltage Protection Scheme