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HFET1™ High-Voltage Integrated Power Control Switch

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A 12 V, 15 mΩ, 4 A Integrated Power Switch with Internal VIN Lockout, FAULT & Power Good Output

The SLG59H1127V is a high-performance, self-powered 15 mΩ NMOS power switch designed for all 4.5 to 12 V power rails up to 4 A. Using a proprietary MOSFET design, the SLG59H1127V achieves a stable 15 mΩ RDSON across a wide input voltage range. In combining novel FET design and copper pillar interconnects, the SLG59H1127V package also exhibits a low thermal resistance for high-current operation. Designed to operate over a -40 °C to 85 °C range, the SLG59H1127V is available in a low thermal resistance, RoHS-compliant, 1.6 x 3.0 mm STQFN package.


  • Optimized for Telecommunications Equipment, High-performance Enterprise Computing, Motor Drives
  • 15 mΩ RDSON
  • Maximum Continuous Switch Current: 4 A
  • Wide Operating Supply Voltage: 4.5 V to 13.2 V
  • Automatic nFET SOA Protection
  • Internal 14.4 V VIN Overvoltage Protection
  • Capacitor-adjustable Inrush Current Control
  • Two stage Current Limit Protection:
    • Resistor-adjustable Active Current Limit
    • Fixed 0.5A Short-circuit Current Limit


  • Open Drain FAULT Signaling
  • Open-drain Power Good (PG) Signaling
  • ON-OFF Control: Active HIGH
  • Package 1.6 x 3.0 x 0.55 mm STQFN-18


  • Enterprise Computing & Telecom Equipment 5V and 12V Point-of-Load Power Distribution
  • PCI/PCIe Adapter Cards
  • General-purpose High-voltage, Power-Rail Switching
  • Multifunction Printers
  • Fan Motor Control
STQFN-18 (1.6 x 3.0 mm)

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