SLUSEV9A August   2023  – September 2023 UCC14340-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Device Comparison
  7. 6 Pin Configuration and Functions
  8. 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 Insulation Specifications
    6. 7.6 Safety-Related Certifications
    7. 7.7 Electrical Characteristics
    8. 7.8 Safety Limiting Values
    9. 7.9 Typical Characteristics
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Power Stage Operation
        1. 8.3.1.1 VDD-VEE Voltage Regulation
        2. 8.3.1.2 COM-VEE Voltage Regulation
        3. 8.3.1.3 Power Handling Capability
      2. 8.3.2 Output Voltage Soft Start
      3. 8.3.3 ENA and PG
      4. 8.3.4 Protection Functions
        1. 8.3.4.1 Input Undervoltage Lockout
        2. 8.3.4.2 Input Overvoltage Lockout
        3. 8.3.4.3 Output Undervoltage Protection
        4. 8.3.4.4 Output Overvoltage Protection
        5. 8.3.4.5 Overpower Protection
        6. 8.3.4.6 Overtemperature Protection
    4. 8.4 Device Functional Modes
  10. 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
        1. 9.2.2.1 Capacitor Selection
        2. 9.2.2.2 Single RLIM Resistor Selection
        3. 9.2.2.3 RDR Circuit Component Selection
        4. 9.2.2.4 Feedback Resistors Selection
  11. 10System Examples
  12. 11Power Supply Recommendations
  13. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  14. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Receiving Notification of Documentation Updates
    3. 13.3 Support Resources
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 Glossary
  15. 14Mechanical, Packaging, and Orderable Information
  16. 15Tape and Reel Information

Package Options

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

8.3.4 Protection Functions

UCC14340-Q1 is equiped with a full feature of protection functions, include input undervoltage lockout, overvoltage lockout portections, output undervoltage protection, overvoltage protection, overpower protection, and over-temperature protection. The input undervoltage and overvoltage lockout protections have the auto recovery response. All other protections have the latch-off response. After the latch-off-response protections are triggered, the converter enters a latch off state, stops switching permanently. The latch-off state can be recovered by bringing VVIN voltage below latch RESET falling threshold VVIN_RESET_FALLING. The latched off state can also be reset by bringing ENA pin below enable threshold VEN_IF.