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LNK6427K-TL - LinkSwitch-3 Offline Switcher IC

The LNK6427K-TL from Power Integrations is a high-performance 9W flyback offline switcher IC designed for mission-critical applications requiring exceptional reliability and efficiency. Part of the proven LinkSwitch-3 family, this integrated switcher combines a 725V power MOSFET with advanced control circuitry in a compact surface-mount package.

Key Features & Benefits

  • Integrated Design: Internal switch eliminates external components, reducing BOM cost and board space
  • Wide Operating Range: -40°C to 150°C junction temperature for aerospace, automotive, industrial, and medical applications
  • Comprehensive Protection: Built-in current limiting, open loop, over-temperature, and short circuit fault protection
  • High Efficiency: Up to 85kHz switching frequency with 55% duty cycle for optimized power conversion
  • Isolated Topology: Flyback configuration provides output isolation for safety-critical designs
  • RoHS Compliant: Meets environmental standards for global market access

Applications

Ideal for AC-DC power supplies in aerospace avionics, automotive electronics, industrial control systems, medical devices, and telecommunications infrastructure where long lifecycle availability and full traceability are essential.

Product attributes Property Value
Manufacturer Power Integrations
Product Series LinkSwitch™-3
Packaging Tape & Reel (TR) |
Output Isolation Isolated
Internal Switch(s) Yes
Voltage - Breakdown 725V
Topology Flyback
Voltage - Start Up -
Voltage - Supply (Vcc/Vdd) -
Duty Cycle 55%
Frequency - Switching Up to 85kHz
Power (Watts) 9 W
Fault Protection Current Limiting, Open Loop, Over Temperature, Short Circuit
Control Features -
Operating Temperature -40°C ~ 150°C (TJ)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 12-BESOP (0.350", 8.89mm Width), 11 Leads, Exposed Pad
Supplier Device Package 12-ESOP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY