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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-SMD (7 Leads), Gull Wing
Supplier Device Package SMD-8B
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Power Integrations LNK305GN-TL is a non-isolated offline switcher from the LinkSwitch®-TN series with an integrated power switch. It supports Buck, Buck-Boost, and Flyback topologies with a 700V breakdown rating, switching at 66kHz with 69% maximum duty cycle. Protection includes current limiting, open loop, over-temperature, and short circuit. It is offered in an 8-SMD (7-lead) gull-wing package rated -40°C to 150°C (TJ).

  • Integrated switch and multi-topology support (Buck, Buck-Boost, Flyback) simplify non-isolated designs.
  • 700V breakdown voltage provides margin for offline operation.
  • Current limiting, open loop, over-temperature, and short-circuit protection improve reliability.
  • 66kHz switching supports compact magnetics.
  • Wide -40°C to 150°C (TJ) range for demanding environments.

Non-Isolated Offline Supplies

The LNK305GN-TL provides non-isolated (direct-coupled) Buck, Buck-Boost, and Flyback conversion, making it well suited to cost-sensitive offline supplies where isolation is not required.

Appliance and Lighting Bias Rails

With a 700V breakdown rating and integrated switch, the device supports bias and auxiliary rails in appliances and lighting electronics, reducing external component count.

Small Power Adapters and Controls

Operating at 66kHz with 69% max duty cycle, the LNK305GN-TL enables compact non-isolated designs for control electronics, with current limiting and short-circuit protection enhancing safety.

Industrial Control Nodes

The -40°C to 150°C (TJ) range and over-temperature protection support reliable operation in industrial control and metering nodes using the 8-SMD gull-wing package.

Q: What topologies does the LNK305GN-TL support?
A: It supports Buck, Buck-Boost, and Flyback topologies in a non-isolated configuration.
Q: What is the breakdown voltage?
A: The device has a 700V breakdown voltage rating for offline operation.
Q: Is the power switch integrated?
A: Yes, the LNK305GN-TL integrates the power switch on-chip.
Q: What switching frequency and duty cycle does it use?
A: It switches at 66kHz with 69% maximum duty cycle.
Q: What protections are included?
A: Current limiting, open loop, over-temperature, and short-circuit protection, rated -40°C to 150°C (TJ).
Base Product Number : LNK305GN
66kHz 700V 8-SMD AC-DC Converter Buck Converter Buck-Boost Converter Flyback Converter LinkSwitch-TN Non-Isolated Offline Switcher Power Integrations
Q: What topologies does the LNK305GN-TL support?
A: It supports Buck, Buck-Boost, and Flyback topologies in a non-isolated configuration.
Q: What is the breakdown voltage?
A: The device has a 700V breakdown voltage rating for offline operation.
Q: Is the power switch integrated?
A: Yes, the LNK305GN-TL integrates the power switch on-chip.
Q: What switching frequency and duty cycle does it use?
A: It switches at 66kHz with 69% maximum duty cycle.
Q: What protections are included?
A: Current limiting, open loop, over-temperature, and short-circuit protection, rated -40°C to 150°C (TJ).