SNVSCW0 October   2024 LM68680-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1Features
  3. 2Applications
  4. 3Description
  5. 4Device Comparison Table
  6. 5Device and Documentation Support
    1. 5.1 Development Support
    2. 5.2 Documentation Support
      1. 5.2.1 Related Documentation
        1. 5.2.1.1 PCB Layout Resources
        2. 5.2.1.2 Thermal Design Resources
    3. 5.3 Receiving Notification of Documentation Updates
    4. 5.4 Support Resources
    5. 5.5 Trademarks
    6. 5.6 Electrostatic Discharge Caution
    7. 5.7 Glossary
  7. 6Revision History
  8. 7Mechanical, Packaging, and Orderable Information
    1. 7.1 Tape and Reel Information

1 Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Compliant
    • Developed for functional safety applications
    • Documentation available to aid ISO 26262 system design planned
    • Systematic capability up to ASIL D
    • Hardware capability up to ASIL C
    • Analog built-in-self-test at start-up
    • Redundant and fast (0.35μs) VOUT monitor
    • Excellent pin FMEA and pin spacing
  • Wide input voltage range: 3V to 70V
  • 1% accurate, VOUT from 0.8V to 60V
  • Optimized for low EMI requirements
    • Facilitates CISPR 25 Class 5 compliance
    • Pin-configurable dual-random spread spectrum and slew-rate control reduce peak emissions
    • Enhanced HotRod™ QFN package with symmetrical pinout
    • Switching frequency from 300kHz to 2.2MHz
    • Pin-configurable AUTO or FPWM operation
  • Low minimum on time: 36ns (typical)
    • Enables 36V to 3.3V conversion at 2.1MHz
  • High-efficiency power conversion
    • > 95% peak efficiency, 12VIN to 5VOUT, 400kHz
    • No-load input current: 3.5µA
  • High power density
    • Internal compensation, OCP, and TSD
    • 4.5mm × 4.5mm eQFN-26 with wettable flanks
    • ΘJA = 18°C/W (EVM)
  • VIN to PGND pin clearance: 1.1mm