SBVS272B November   2015  – December 2023 TPS3711

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings #GUID-795AD25B-5DDA-4725-83BA-87F5B93DF96A/ABSMAXNOTE
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Input Pin (SENSE)
      2. 6.3.2 Output Pin (OUT)
    4. 6.4 Device Functional Modes
      1. 6.4.1 Normal Operation (VDD > UVLO)
      2. 6.4.2 Undervoltage Lockout (V(POR) < VDD < UVLO)
      3. 6.4.3 Power On Reset (VDD < V(POR))
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Input and Output Configurations
      2. 7.1.2 Immunity to Input Pin Voltage Transients
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Resistor Divider Selection
        2. 7.2.2.2 Pullup Resistor Selection
        3. 7.2.2.3 Input Supply Capacitor
      3. 7.2.3 Application Curves
    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 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 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

6.3.1 Input Pin (SENSE)

The TPS3711 combines a comparator with a precision reference voltage. The comparator has one external input and one internal input connected to the internal reference. The falling threshold on SENSE is designed and trimmed to be equal to the reference voltage (400 mV). This configuration optimizes the device accuracy. The comparator also has built-in hysteresis that proves immunity to noise and ensures stable operation.

The comparator input swings from ground to 6.5 V (7.0 V absolute maximum), regardless of the device supply voltage used. Although not required in most cases, it is good analog design practice to place a 1-nF to 10-nF bypass capacitor at the comparator input for noisy applications in order to reduce sensitivity to transient voltage changes on the monitored signal.

For the comparator, the output (OUT) is driven to logic low when the input SENSE voltage drops below VIT–. When the voltage exceeds VIT+, OUT goes to a high-impedance state; see Figure 5-1.