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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 650V
Topology Flyback
Voltage - Start Up -
Voltage - Supply (Vcc/Vdd) -
Duty Cycle 64%
Frequency - Switching 120kHz ~ 136kHz
Power (Watts) 28 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 Power Integrations LNK6664V is a Flyback offline switcher from the LinkSwitch™-HP series with an integrated switch and galvanically isolated output. It delivers up to 28 W at 120kHz–136kHz switching with a 64% maximum duty cycle and a 650V breakdown rating. Comprehensive fault protection and a -40°C to 150°C junction range support robust AC-DC designs.

  • Integrated switch reduces external component count in isolated Flyback designs.
  • 650V breakdown supports universal offline input margins.
  • 120kHz–136kHz switching enables compact magnetics.
  • Full fault protection set improves reliability.
  • -40°C to 150°C junction range suits demanding environments.

Compact AC-DC Adapters

The LNK6664V integrates the switch and controller in a Flyback topology, delivering up to 28 W for space-constrained adapters with isolated output.

Standby and Auxiliary Supplies

With 650V breakdown and 120kHz–136kHz switching, it suits offline auxiliary rails requiring galvanic isolation.

Industrial Control Power

Operating from -40°C to 150°C junction temperature, it handles demanding thermal environments in isolated Flyback designs.

Home Appliance Power

Built-in over temperature, over voltage, over load, and short circuit protection simplify reliable offline supplies.

Q: What topology does the LNK6664V use?
A: It is a Flyback offline switcher with galvanically isolated output and an integrated switch.
Q: What is the breakdown voltage?
A: 650V Vds rating.
Q: How much power can it deliver?
A: Up to 28 W.
Q: What switching frequency does it run at?
A: 120kHz to 136kHz with a 64% maximum duty cycle.
Q: What protections are included?
A: Current limiting, over load, over temperature, over voltage, and short circuit protection.
Base Product Number : LNK6664V
12-SDIP 120kHz 136kHz 28 W 650V AC-DC Flyback Converter Isolated LinkSwitch-HP Offline Switcher
Q: What topology does the LNK6664V use?
A: It is a Flyback offline switcher with galvanically isolated output and an integrated switch.
Q: What is the breakdown voltage?
A: 650V Vds rating.
Q: How much power can it deliver?
A: Up to 28 W.
Q: What switching frequency does it run at?
A: 120kHz to 136kHz with a 64% maximum duty cycle.
Q: What protections are included?
A: Current limiting, over load, over temperature, over voltage, and short circuit protection.