SLVSK21 October   2025 LMG708B0

ADVANCE INFORMATION  

  1.   1
  2. 1Features
  3. 2Applications
  4. 3Description
  5. 4Device and Documentation Support
    1. 4.1 Device Support
      1. 4.1.1 Development Support
        1. 4.1.1.1 Custom Design With WEBENCH® Tools
    2. 4.2 Documentation Support
      1. 4.2.1 Related Documentation
        1. 4.2.1.1 Low-EMI Design Resources
        2. 4.2.1.2 Thermal Design Resources
        3. 4.2.1.3 PCB Layout Resources
    3. 4.3 Receiving Notification of Documentation Updates
    4. 4.4 Support Resources
    5. 4.5 Trademarks
    6. 4.6 Electrostatic Discharge Caution
    7. 4.7 Glossary
  6. 5Mechanical, Packaging, and Orderable Information
    1. 5.1 Tape and Reel Information

1 Features

  • 20A synchronous buck DC/DC converter
    • Low RDS(on) gallium-nitride (GaN) power FETs
    • Wide input voltage range of 5V to 80V
    • Adjustable output voltage from 1V to 55V, or fixed output options of 5V or 12V
    • Maximum junction temperature of 125°C
    • Frequency adjustable from 200kHz to 2.64MHz
    • 25ns tON(min) for high step-down conversion
    • CV or CC regulation with dynamic adjustment
  • High efficiency across the full load range
    • 97% at 48VIN, 12VOUT, 20A, 400kHz
    • Optimized near-zero deadtime switching
    • Multiphase stackable for higher output current
    • Dual-input VCC subregulator with BIAS option
    • Thermally-enhanced eQFN-22 package with optional top-side cooling
  • Designed for ultra-low emissions requirements
    • Spread spectrum (DRSS) frequency modulation
    • Optional external clock synchronization
    • Selectable FPWM or PFM mode at light loads
    • Integrated bootstrap capacitor
  • Integrated protection features for robust design
    • Hiccup-mode overcurrent protection
    • Average output current monitoring (IMON)
    • Precision enable and PGOOD functions
    • VIN, VCC, and gate-drive UVLO protection
  • Create a custom design using the LMG708B0 with the WEBENCH® Power Designer