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Product attributes Property Value
Manufacturer Power Integrations
Product Series LinkSwitch®-TN
Packaging Cut Tape (CT) | Tape & Reel (TR)
Output Isolation Non-Isolated
Internal Switch(s) Yes
Voltage - Breakdown 700V
Topology Buck, Buck-Boost, Flyback
Voltage - Start Up -
Voltage - Supply (Vcc/Vdd) -
Duty Cycle 69%
Frequency - Switching 66kHz
Power (Watts) -
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 8-SOIC (0.154", 3.90mm Width), 7 Leads
Supplier Device Package SO-8C
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The LNK306DG-TL from Power Integrations is a LinkSwitch-TN offline switcher that integrates a 700V power MOSFET for non-isolated Buck, Buck-Boost, and Flyback designs. Operating at 66kHz with up to 69% duty cycle, it includes current limiting, open loop, over temperature, and short circuit protection. Housed in an 8-SOIC 7-lead package, it handles junction temperatures from -40°C to 150°C.

  • Integrated 700V MOSFET reduces external component count and board space.
  • Multi-topology flexibility (Buck, Buck-Boost, Flyback) supports diverse non-isolated designs.
  • Comprehensive protection suite (current limiting, open loop, over temperature, short circuit) improves reliability.
  • Wide -40°C to 150°C junction temperature range suits demanding thermal environments.
  • 66kHz switching frequency with 69% max duty cycle enables compact magnetics.

Non-Isolated AC-DC Bias Supplies

The LNK306DG-TL's Buck topology and 700V breakdown rating make it well suited for direct-coupled bias supplies from offline AC mains, eliminating the need for a transformer.

Low-Power Buck-Boost Rails

With Buck-Boost capability, this LinkSwitch-TN device delivers a regulated rail even when the output voltage crosses the input range, ideal for compact appliance control boards.

Compact Flyback Auxiliary Power

When a Flyback arrangement is used, the integrated switch and 66kHz operation support small auxiliary supplies in non-isolated system architectures.

Harsh-Environment Control Electronics

A -40°C to 150°C junction temperature range allows deployment in industrial and outdoor control electronics requiring wide thermal tolerance.

Space-Constrained 8-SOIC Designs

The 8-SOIC 7-lead package with integrated MOSFET reduces external component count for space-limited offline switcher designs.

Q: What switching topologies does the LNK306DG-TL support?
A: It supports Buck, Buck-Boost, and Flyback topologies in a non-isolated configuration.
Q: What is the breakdown voltage rating?
A: The device has a 700V breakdown voltage (Vds rating).
Q: Does it include an integrated switch?
A: Yes, the power MOSFET is integrated on-chip.
Q: What is the maximum duty cycle and switching frequency?
A: 69% maximum duty cycle at 66kHz switching frequency.
Q: What protections are built in?
A: Current limiting, open loop, over temperature, and short circuit protection.
Base Product Number : LNK306DG
66kHz 700V 8-SOIC AC-DC Converter Buck Converter Buck-Boost Converter Flyback Converter LinkSwitch-TN Non-Isolated Offline Switcher
Q: What switching topologies does the LNK306DG-TL support?
A: It supports Buck, Buck-Boost, and Flyback topologies in a non-isolated configuration.
Q: What is the breakdown voltage rating?
A: The device has a 700V breakdown voltage (Vds rating).
Q: Does it include an integrated switch?
A: Yes, the power MOSFET is integrated on-chip.
Q: What is the maximum duty cycle and switching frequency?
A: 69% maximum duty cycle at 66kHz switching frequency.
Q: What protections are built in?
A: Current limiting, open loop, over temperature, and short circuit protection.