SLUSFG5A November   2024  – September 2025 UCC33421-Q1

PRODUCTION DATA  

  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  Power Ratings
    6. 6.6  Insulation Specifications
    7. 6.7  Safety Limiting Values
    8. 6.8  Electrical Characteristics
    9. 6.9  Insulation Characteristics Curves
    10. 6.10 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Enable and Disable
      2. 7.3.2 Output Voltage Soft-Start
      3. 7.3.3 Output Voltage Steady-State Regulation
      4. 7.3.4 Protection Features
        1. 7.3.4.1 Input Under-Voltage and Over-Voltage Lockout
        2. 7.3.4.2 Output Under-Voltage Protection
        3. 7.3.4.3 Output Over-Voltage Protection
        4. 7.3.4.4 Over-Temperature Protection
        5. 7.3.4.5 Fault Reporting and Auto-Restart
      5. 7.3.5 VCC Load Recommended Operating Area
      6. 7.3.6 Electromagnetic Compatibility (EMC) Considerations
    4. 7.4 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
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 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 and Packaging Information

1 Features

  • 1.5W maximum output power
  • 4.5V to 5.5V input voltage operation range
  • 5.0V, 5.5V regulated selectable output voltage
    • 5.0V: 300mA available load current
  • 0.5% typical load regulation
  • 4mV/V typical line regulation
  • Robust isolation barrier:
    • Isolation rating: 5kVRMS
    • Surge capability: 10.4kVPK
    • Working voltage: 1700VPK
    • ± 8KV IEC 61000-4-2 contact discharge protection across isolation barrier
    • 250V/ns common mode transient immunity
  • Power dense isolated DC/DC module with integrated transformer technology
  • Adaptive spread spectrum modulation (SSM)
  • Meets CISPR-25 Class 5 emission
  • Strong magnetic fields immunity
  • Overload and short circuit protection
  • Thermal shutdown
  • Low inrush current soft-start
  • Enable pin with fault reporting mechanism
  • AEC-Q100 qualified with the following results:
    • Device temperature Grade 1: –40°C to 125°C ambient operating temperature
  • Functional Safety-Capable
  • SSOP-16 (5.85mm × 7.50mm) package
  • >8.2mm clearance and creepage