SLUSG22 October   2025 UCC35131-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Insulation Specifications
    6. 6.6 Electrical Characteristics
    7. 6.7 Safety-Related Certifications
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Pre-Production Samples Operating Limits
    3. 7.3 Functional Block Diagram
    4. 7.4 Feature Description
      1. 7.4.1 Power Stage Operation
        1. 7.4.1.1 VDD-COM Voltage Regulation
        2. 7.4.1.2 COM-VEE Voltage Regulation
      2. 7.4.2 Output Voltage Soft Start
      3. 7.4.3 ENA and Power-Good
      4. 7.4.4 Protection Functions
        1. 7.4.4.1 Input Undervoltage Lockout
        2. 7.4.4.2 Input Overvoltage Lockout
        3. 7.4.4.3 Output Undervoltage Protection
        4. 7.4.4.4 Output Overvoltage Protection
        5. 7.4.4.5 Over-Temperature Protection
        6. 7.4.4.6 BSW Pin Faults Protection
    5. 7.5 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 VDD-COM Voltage Regulation
        2. 8.2.2.2 COM-VEE Voltage Regulation and Single Output Configuration
    3. 8.3 System Examples
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Third-Party Products Disclaimer
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

4 Device Comparison

Table 4-1 Device Comparison Table
DEVICE NAME VVIN RANGE OUTPUT (VDD-COM) ADJUSTABLE RANGE OUTPUT (VEE-COM) ADJUSTABLE RANGE TYPICAL POWER POWER-GOOD ACTIVE POLARITY

FAULT RESPONSE
UCC34141-Q1 8V to 20V 18V to 20V -2V to -8V 1.5W

LOW

LATCH-OFF
15V to 18V -2V to -8V ≥1W
5.5V to 8V 15V to 20V -2V to -8V ≥0.3W

UCC35131-Q1

 10.8V to 13.2V 12V to 18V -2V to -8V 2.0W

LOW

LATCH-OFF
8V to 20V 12V to 18V -2V to -8V 1.6W
5.5V to 8V 12V to 18V -2V to -8V ≥0.5W

UCC35131D-Q1

 10.8V to 13.2V 12V to 18V -2V to -8V 2.0W HIGH AUTO-RESTART
8V to 20V 12V to 18V -2V to -8V 1.6W
5.5V to 8V 12V to 18V -2V to -8V ≥0.5W