LNK6404D

LNK6404D - LinkSwitch-3 Offline Flyback Switcher IC

The LNK6404D from Power Integrations is a high-performance AC-DC converter IC from the LinkSwitch-3 family, designed for isolated flyback topology applications up to 4.1W. This integrated switcher features a 725V breakdown voltage, internal MOSFET switch, and operates at switching frequencies up to 85kHz with 55% duty cycle capability.

Key Features & Benefits

• Integrated Design: Built-in 725V power MOSFET eliminates external switching components
• Comprehensive Protection: Current limiting, open loop detection, over-temperature shutdown, and short circuit protection
• High Efficiency: Up to 85kHz switching frequency optimizes transformer size and performance
• Wide Operating Range: -40°C to 150°C junction temperature for demanding environments
• Compact Package: Surface mount SO-8C (8-SOIC) for space-constrained designs
• RoHS Compliant: Meets environmental standards for global markets

Typical Applications

Ideal for low-power AC-DC power supplies in consumer electronics, industrial controls, smart home devices, IoT sensors, LED drivers, and auxiliary power supplies. Perfect for applications requiring isolated output up to 4.1W with minimal external components.

Why Choose Authorized Distribution?

As an authorized Power Integrations distributor, we provide genuine LNK6404D ICs with full manufacturer traceability, complete technical documentation, reference designs, and long lifecycle support to protect your production programs against obsolescence.

• LNK6404D.pdf