SNOSDL8 November   2024 TLV3511-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
    1.     Pin Configurations: TLV3511 and TLV3512
  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 Switching Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagrams
    3. 6.3 Feature Description
    4. 6.4 Device Functional Modes
      1. 6.4.1 Inputs
        1. 6.4.1.1 Unused Inputs
      2. 6.4.2 Internal Hysteresis
      3. 6.4.3 Outputs
      4. 6.4.4 ESD Protection
      5. 6.4.5 Power-On Reset (POR)
    5. 6.5 Overview
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Basic Comparator Definitions
        1. 7.1.1.1 Operation
        2. 7.1.1.2 Propagation Delay
        3. 7.1.1.3 Overdrive Voltage
      2. 7.1.2 Hysteresis
        1. 7.1.2.1 Inverting Comparator With Hysteresis
        2. 7.1.2.2 Non-Inverting Comparator With Hysteresis
    2. 7.2 Typical Applications
      1. 7.2.1 Low-Side Current Sensing
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Curve
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

7.1.2.2 Non-Inverting Comparator With Hysteresis

A non-inverting comparator with hysteresis requires a two-resistor network and a voltage reference (VREF) at the inverting input, as shown below.

TLV3511-Q1 TLV351x-Q1 in a Non-Inverting Configuration With HysteresisFigure 7-5 TLV351x-Q1 in a Non-Inverting Configuration With Hysteresis

The equivalent resistor networks when the output is high and low are shown below.

TLV3511-Q1 Non-Inverting Configuration Resistor NetworksFigure 7-6 Non-Inverting Configuration Resistor Networks

When VIN is less than VREF,, the output is low. For the output to switch from low to high, VIN must rise above the VIN1 threshold. Use the equation below to calculate VIN1.

Equation 4. TLV3511-Q1

When VIN is greater than VREF, the output is high. For the comparator to switch back to a low state, VIN must drop below VIN2. Use equation below to calculate VIN2.

Equation 5. TLV3511-Q1

The hysteresis of this circuit is the difference between VIN1 and VIN2, as shown below.

Equation 6. TLV3511-Q1

For more information, please see Application Notes SNOA997 "Inverting comparator with hysteresis circuit" and SBOA313 "Non-Inverting Comparator With Hysteresis Circuit".