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Product attributes Property Value
Manufacturer Power Integrations
Product Series LinkSwitch™-4
Packaging Tape & Reel (TR) |
Output Isolation Isolated
Internal Switch(s) No
Voltage - Breakdown -
Topology Flyback
Voltage - Start Up -
Voltage - Supply (Vcc/Vdd) 5V ~ 16.5V
Duty Cycle -
Frequency - Switching 65kHz
Power (Watts) 5 W
Fault Protection Over Temperature, Over Voltage, Short Circuit
Control Features -
Operating Temperature -25°C ~ 125°C (TJ)
Grade -
Qualification -
Mounting Type -
Package / Case -
Supplier Device Package -
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

LNK4322S-TL - LinkSwitch-4 Offline Switcher IC

The LNK4322S-TL from Power Integrations is a high-performance offline switcher IC from the LinkSwitch-4 family, designed for compact, efficient AC-DC power conversion applications up to 5W. This flyback topology controller operates at 65kHz switching frequency and features comprehensive fault protection including over-temperature, over-voltage, and short-circuit protection.

Key Features

  • 5W Power Output: Ideal for low-power applications including chargers, adapters, and auxiliary supplies
  • Flyback Topology: Proven, cost-effective design for isolated power conversion
  • 65kHz Switching Frequency: Enables compact transformer design while minimizing EMI
  • Wide Supply Range: 5V to 16.5V operating voltage for flexible design options
  • Comprehensive Protection: Built-in over-temperature, over-voltage, and short-circuit protection
  • Isolated Output: Ensures safety and compliance in end applications
  • Extended Temperature Range: -25°C to 125°C junction temperature for reliable operation
  • RoHS Compliant: Meets environmental standards for global distribution

Applications

  • AC-DC adapters and chargers
  • Auxiliary power supplies
  • Smart home devices
  • Industrial control systems
  • Consumer electronics
  • IoT and connected devices

Design Resources

Access the complete LinkSwitch-4 Family Datasheet for detailed electrical characteristics, application circuits, and design guidelines.

Why Choose LNK4322S-TL?

Power Integrations' LinkSwitch-4 family delivers proven reliability for cost-sensitive AC-DC conversion applications. The LNK4322S-TL combines ease of design with robust protection features, reducing component count and board space while ensuring long-term reliability. Tape and reel packaging supports high-volume automated assembly for production efficiency.