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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 -
Operating Temperature -40°C ~ 125°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 LNK3202D-TL from Power Integrations is a LinkSwitch-TN2 offline switcher IC integrating a 725V power MOSFET for non-isolated Buck, Buck-Boost, and Flyback designs. Operating at 66kHz with a 69% maximum duty cycle, it delivers a compact, low-component-count solution in an 8-SOIC (7-lead) package. Built-in current limiting, over temperature, over voltage, and short circuit protection enhance reliability across a -40°C to 125°C junction temperature range.

  • Integrated 725V MOSFET reduces external component count and board space.
  • Supports Buck, Buck-Boost, and Flyback topologies for design flexibility.
  • Comprehensive protection (current limiting, OTP, OVP, short circuit) improves reliability.
  • 66kHz switching with 69% max duty cycle enables compact magnetics.
  • Wide -40°C to 125°C junction temperature range suits demanding environments.

Non-Isolated AC-DC Bias Supplies

The LNK3202D-TL delivers a compact non-isolated bias supply for appliances and industrial controls. Its integrated switch and 725V breakdown rating allow direct offline operation with minimal external parts.

Buck Converter Auxiliary Rails

Using the Buck topology, this LinkSwitch-TN2 device generates low-voltage rails from the AC mains. The 66kHz switching frequency and 69% max duty cycle support efficient step-down conversion in a small 8-SOIC footprint.

Buck-Boost for Wide Output Range

When the output voltage must exceed or fall below the input, the Buck-Boost topology provides flexibility. Built-in current limiting and short circuit protection safeguard the supply under fault conditions.

Flyback for Low-Power Non-Isolated Loads

For applications needing a simple flyback arrangement without galvanic isolation, the LNK3202D-TL integrates the switch and control, reducing BOM cost while retaining over temperature and over voltage protection.

Harsh-Environment Electronics

With an operating junction temperature range of -40°C to 125°C, the device suits demanding thermal environments in metering, HVAC, and smart-home electronics.

Q: What switching topologies does the LNK3202D-TL support?
A: It supports Buck, Buck-Boost, and Flyback topologies in a non-isolated configuration.
Q: Does this device include an integrated power switch?
A: Yes, the power MOSFET is integrated on-chip, simplifying design and reducing external component count.
Q: What is the breakdown voltage rating?
A: The device has a 725V breakdown voltage (Vds) rating.
Q: What switching frequency does it operate at?
A: It switches at 66kHz with a maximum duty cycle of 69%.
Q: What protections are built in?
A: Current limiting, over temperature, over voltage, and short circuit protection are included.
Base Product Number : LNK3202D
66kHz 725V 8-SOIC Buck Converter Buck-Boost Converter Flyback Converter LinkSwitch-TN2 Non-Isolated Offline Switcher Power Integrations
Q: What switching topologies does the LNK3202D-TL support?
A: It supports Buck, Buck-Boost, and Flyback topologies in a non-isolated configuration.
Q: Does this device include an integrated power switch?
A: Yes, the power MOSFET is integrated on-chip, simplifying design and reducing external component count.
Q: What is the breakdown voltage rating?
A: The device has a 725V breakdown voltage (Vds) rating.
Q: What switching frequency does it operate at?
A: It switches at 66kHz with a maximum duty cycle of 69%.
Q: What protections are built in?
A: Current limiting, over temperature, over voltage, and short circuit protection are included.