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Product attributes Property Value
Manufacturer Power Integrations
Product Series LinkSwitch®-CV
Packaging Tube |
Output Isolation Isolated
Internal Switch(s) Yes
Voltage - Breakdown 725V
Topology Flyback
Voltage - Start Up -
Voltage - Supply (Vcc/Vdd) -
Duty Cycle 54%
Frequency - Switching 100kHz
Power (Watts) 9 W
Fault Protection Current Limiting, Open Loop, Over Temperature, Short Circuit
Control Features -
Operating Temperature -40°C ~ 150°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 LNK623PG is a flyback offline switcher from the LinkSwitch-CV series, delivering up to 9 W with a 725V integrated switch. Housed in a 7-lead 8-DIP package, it operates at 100kHz with 54% maximum duty cycle and includes current limiting, open loop, over temperature, and short circuit protection across a -40°C to 150°C junction temperature range.

  • Integrated 725V switch simplifies isolated flyback design.
  • 9 W output suits compact adapters and auxiliary supplies.
  • Fault protection set improves reliability.
  • Wide -40°C to 150°C junction range for demanding thermal environments.
  • Through-hole 7-lead 8-DIP package for robust assembly.

Compact Isolated Adapters

The LNK623PG integrates the switch and controller in a 7-lead 8-DIP package, delivering up to 9 W for isolated flyback wall adapters and chargers. The 725V breakdown rating provides margin for universal AC input.

Auxiliary and Bias Supplies

With 100kHz switching and 54% maximum duty cycle, this flyback switcher provides efficient isolated bias rails for appliances and industrial controls, protected by over temperature and open loop detection.

Home Appliance Electronics

The -40°C to 150°C junction temperature range supports reliable operation in white goods and HVAC control boards requiring isolated low-power rails.

Metering Systems

Galvanically isolated flyback topology suits energy meters and smart devices needing a compact, protected offline supply with short circuit and current limiting protection.

Q: What topology does the LNK623PG use?
A: It is a flyback offline switcher with galvanically isolated output from the LinkSwitch-CV series.
Q: What is the breakdown voltage?
A: The integrated switch has a 725V Vds breakdown rating.
Q: How much power can it deliver?
A: Up to 9 W.
Q: What switching frequency and duty cycle does it use?
A: 100kHz switching frequency with 54% maximum duty cycle.
Q: What protections are included?
A: Current limiting, open loop, over temperature, and short circuit protection.
Base Product Number : LNK623PG
100kHz 725V 8-DIP 9 W AC-DC Flyback Converter Isolated LinkSwitch-CV Offline Switcher
Q: What topology does the LNK623PG use?
A: It is a flyback offline switcher with galvanically isolated output from the LinkSwitch-CV series.
Q: What is the breakdown voltage?
A: The integrated switch has a 725V Vds breakdown rating.
Q: How much power can it deliver?
A: Up to 9 W.
Q: What switching frequency and duty cycle does it use?
A: 100kHz switching frequency with 54% maximum duty cycle.
Q: What protections are included?
A: Current limiting, open loop, over temperature, and short circuit protection.