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Product attributes Property Value
Manufacturer Power Integrations
Product Series LinkSwitch™-TN2
Packaging Tube |
Output Isolation Non-Isolated
Internal Switch(s) Yes
Voltage - Breakdown 725V
Topology Buck, Buck-Boost, Flyback
Voltage - Start Up -
Voltage - Supply (Vcc/Vdd) -
Duty Cycle 69%
Frequency - Switching 66kHz
Power (Watts) -
Fault Protection Current Limiting, Over Temperature, Over Voltage, Short Circuit
Control Features -
Operating Temperature -40°C ~ 125°C (TJ)
Grade -
Qualification -
Mounting Type Through Hole
Package / Case 8-DIP (0.300", 7.62mm), 7 Leads
Supplier Device Package 8-PDIP-C
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Power Integrations LNK3205P is a non-isolated offline switcher from the LinkSwitch-TN2 series supporting buck, buck-boost, and flyback topologies. It integrates the power switch with a 725V breakdown rating, switches at 66kHz with a 69% maximum duty cycle, and includes current limiting, over temperature, over voltage, and short circuit protection. It is rated for -40°C to 125°C junction temperatures in an 8-DIP package.

  • Supports buck, buck-boost, and flyback topologies for flexible non-isolated designs.
  • Integrated switch reduces external component count.
  • 725V breakdown rating provides margin for universal AC input.
  • Built-in current limiting, over temperature, over voltage, and short circuit protection.
  • Compact 8-DIP package with -40°C to 125°C junction temperature range.

Non-Isolated Bias Supplies

The LNK3205P's non-isolated buck and buck-boost capability makes it ideal for direct-coupled bias rails in appliances and controls, using its 725V breakdown rating for universal AC input.

Home Appliance Control Boards

With an integrated switch and 66kHz switching frequency, this LinkSwitch-TN2 device simplifies non-isolated supplies for appliance electronics, while current limiting and short circuit protection improve robustness.

LED and Sensor Power

Designers can build compact non-isolated flyback or buck supplies for sensors and small loads, benefiting from the 69% maximum duty cycle and built-in over temperature and over voltage protection.

Industrial Control Modules

The -40°C to 125°C junction temperature range supports non-isolated power in industrial control modules where a direct-coupled, low-component-count supply is preferred.

Q: What topologies does the LNK3205P support?
A: It supports buck, buck-boost, and flyback topologies in a non-isolated configuration.
Q: What is the breakdown voltage?
A: The LNK3205P has a 725V breakdown rating.
Q: Is the switch integrated?
A: Yes, the power switch is integrated on-chip.
Q: What switching frequency and duty cycle does it use?
A: It switches at 66kHz with a 69% maximum duty cycle.
Q: What protections are included?
A: Current limiting, over temperature, over voltage, and short circuit protection.
Base Product Number : LNK3205P
66kHz 725V Breakdown 8-DIP Buck Converter Buck-Boost Flyback Converter LinkSwitch-TN2 Non-Isolated Offline Switcher Power Integrations
Q: What topologies does the LNK3205P support?
A: It supports buck, buck-boost, and flyback topologies in a non-isolated configuration.
Q: What is the breakdown voltage?
A: The LNK3205P has a 725V breakdown rating.
Q: Is the switch integrated?
A: Yes, the power switch is integrated on-chip.
Q: What switching frequency and duty cycle does it use?
A: It switches at 66kHz with a 69% maximum duty cycle.
Q: What protections are included?
A: Current limiting, over temperature, over voltage, and short circuit protection.