SNVSBF5C July   2019  – May 2020 LP3470A

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Basic Operating Circuit
      2.      Typical Supply Current for LP3470A
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 RESET Time-Out Period
      2. 8.3.2 RESET Output
      3. 8.3.3 Pull-up Resistor Selection
      4. 8.3.4 VCC Transient Immunity
    4. 8.4 Device Functional Modes
      1. 8.4.1 RESET Output Low
      2. 8.4.2 RESET Output High
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  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

8.3.4 VCC Transient Immunity

The LP3470A is immune to quick voltage transients or excursions on VCC. Sensitivity to transients depends on both pulse duration and overdrive. Overdrive is defined by how much VCC deviates from the specified threshold. Threshold overdrive is calculated as a percent of the threshold in question, as shown in Equation 6. A 0.1-µF bypass capacitor mounted close to VCC provides additional transient immunity.

Equation 6. Overdrive = | (VCC / VIT- – 1) × 100% |
LP3470A Overdrive_LP3470A.gifFigure 10. Overdrive vs Pulse Duration