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Product attributes Property Value
Manufacturer Power Integrations
Product Series LinkSwitch™-HP
Packaging Tube |
Output Isolation Isolated
Internal Switch(s) Yes
Voltage - Breakdown 725V
Topology Flyback
Voltage - Start Up -
Voltage - Supply (Vcc/Vdd) -
Duty Cycle 64%
Frequency - Switching 120kHz ~ 136kHz
Power (Watts) 54 W
Fault Protection Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit
Control Features -
Operating Temperature -40°C ~ 150°C (TJ)
Grade -
Qualification -
Mounting Type Through Hole
Package / Case 12-SDIP (0.412", 10.46mm), 11 Leads, Exposed Pad
Supplier Device Package eDIP-12
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The LNK6779V from Power Integrations is part of the LinkSwitch-HP series. It is an isolated flyback offline switcher with an integrated switch, offering a 725V breakdown rating and up to 54W output. It operates at 120kHz to 136kHz with a 64% maximum duty cycle. Protections include current limiting, over load, over temperature, over voltage, and short circuit. Housed in a 12-SDIP exposed-pad package rated for -40°C to 150°C junction temperature.

  • Integrated switch simplifies isolated flyback designs and reduces component count.
  • 725V breakdown rating provides margin for high-line AC input transients.
  • Delivers up to 54W for higher-power isolated applications.
  • Comprehensive protection set including current limiting, over load, over temperature, over voltage, and short circuit.
  • Rated for -40°C to 150°C junction temperature for demanding environments.

High-Power Adapters

The LNK6779V delivers up to 54W in an isolated flyback topology with an integrated switch, making it suitable for higher-power AC-DC adapters requiring a 725V breakdown rating.

Industrial Power Supplies

Rated for -40°C to 150°C junction temperature, this LinkSwitch-HP device suits industrial supplies, with current limiting, over load, over temperature, over voltage, and short circuit protection.

Appliance Power

With a 64% maximum duty cycle and 120kHz to 136kHz switching frequency, it supports compact isolated power stages in appliances.

Set-Top and Networking Supplies

The 12-SDIP exposed-pad package with 11 leads enables thermal management for continuous isolated power delivery in consumer electronics.

Q: What topology does the LNK6779V use?
A: It is a flyback offline switcher with an integrated switch and galvanically isolated output.
Q: What is the breakdown voltage?
A: 725V.
Q: How much power can it deliver?
A: Up to 54W.
Q: What is the maximum duty cycle?
A: 64%.
Q: What protections are included?
A: Current limiting, over load, over temperature, over voltage, and short circuit.
Base Product Number : LNK6779V
54W 725V AC-DC Converter Flyback Converter Integrated Switch Isolated LinkSwitch-HP Offline Switcher PMIC SDIP
Q: What topology does the LNK6779V use?
A: It is a flyback offline switcher with an integrated switch and galvanically isolated output.
Q: What is the breakdown voltage?
A: 725V.
Q: How much power can it deliver?
A: Up to 54W.
Q: What is the maximum duty cycle?
A: 64%.
Q: What protections are included?
A: Current limiting, over load, over temperature, over voltage, and short circuit.