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Product attributes Property Value
Manufacturer Power Integrations
Product Series LinkSwitch®-TN2
Packaging Cut Tape (CT) | Tape & Reel (TR)
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 EN, Frequency Control, Soft Start
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 LNK3207D-TL from Power Integrations is a multi-topology offline switcher in the LinkSwitch®-TN2 series supporting Buck, Buck-Boost, and Flyback configurations with non-isolated output. It features a 725V breakdown voltage rating, integrated switch, 66kHz switching frequency, and 69% max duty cycle. Control features include EN, frequency control, and soft start, with current limiting, over temperature, over voltage, and short circuit protection in an 8-SOIC package rated for -40°C to 150°C junction temperatures.

  • Multi-topology flexibility (Buck, Buck-Boost, Flyback) for varied designs.
  • Integrated switch reduces external component count.
  • 725V breakdown voltage supports robust offline operation.
  • Soft start and frequency control improve startup and stability.
  • Wide -40°C to 150°C junction range suits demanding environments.

Non-Isolated AC-DC Supplies

The LNK3207D-TL supports Buck, Buck-Boost, and Flyback topologies with non-isolated output, ideal for direct-coupled low-cost AC-DC rails.

Home Appliances

725V breakdown voltage and integrated switch enable compact non-isolated bias supplies in appliances.

Smart Meters and Controls

Soft start and frequency control support stable startup and operation in metering and control electronics.

LED Drivers and Auxiliary Rails

66kHz switching and 69% max duty cycle suit space-efficient non-isolated power stages.

Industrial Electronics

A -40°C to 150°C junction temperature range supports reliable operation in demanding environments.

Q: What topologies does the LNK3207D-TL support?
A: Buck, Buck-Boost, and Flyback topologies with non-isolated output.
Q: What is the breakdown voltage?
A: 725V drain-source breakdown voltage rating.
Q: Is the switch integrated?
A: Yes, an integrated switch is built in.
Q: What is the switching frequency?
A: 66kHz with a 69% max duty cycle.
Q: What control features are included?
A: EN, frequency control, and soft start.
Q: What protections are provided?
A: Current limiting, over temperature, over voltage, and short circuit protection.
Base Product Number : LNK3207D
725V 8-SOIC AC-DC Buck Converter Buck-Boost Converter Flyback Converter LinkSwitch-TN2 Non-Isolated Power Integrations
Q: What topologies does the LNK3207D-TL support?
A: Buck, Buck-Boost, and Flyback topologies with non-isolated output.
Q: What is the breakdown voltage?
A: 725V drain-source breakdown voltage rating.
Q: Is the switch integrated?
A: Yes, an integrated switch is built in.
Q: What is the switching frequency?
A: 66kHz with a 69% max duty cycle.
Q: What control features are included?
A: EN, frequency control, and soft start.
Q: What protections are provided?
A: Current limiting, over temperature, over voltage, and short circuit protection.