LNK6668K

Power Integrations LNK6668K - LinkSwitch-HP Offline Switcher IC

The LNK6668K is a high-performance AC-DC offline switcher from Power Integrations' LinkSwitch-HP family, designed for cost-effective, high-efficiency flyback power supplies up to 68W. This integrated IC combines a 650V power MOSFET, oscillator, control logic, and comprehensive protection features in a compact 12-ESOP surface-mount package.

Key Features & Benefits

• Integrated 650V Power MOSFET - Reduces component count and simplifies design
• 68W Output Power - Ideal for consumer electronics, industrial controls, and LED lighting applications
• Advanced Protection - Built-in current limiting, over-voltage, over-temperature, over-load, and short-circuit protection
• High Efficiency - 120-136 kHz switching frequency optimizes transformer size and efficiency
• Wide Operating Range - Functions reliably from -40°C to 150°C junction temperature
• Compact SMD Package - 12-ESOP with exposed pad for superior thermal performance
• RoHS Compliant - Meets environmental standards for global markets

Typical Applications

The LNK6668K is engineered for isolated flyback topologies in applications including AC-DC adapters, auxiliary power supplies, home appliances, industrial automation equipment, smart home devices, and LED driver circuits. Its comprehensive fault protection and wide operating temperature range make it suitable for demanding aerospace, automotive, industrial, and telecommunications environments.

Design Support & Documentation

As an authorized distributor, we provide full manufacturer documentation, reference designs, and technical support to accelerate your design-in process. All units ship with complete traceability and authenticity guarantees, backed by Power Integrations' long lifecycle commitment.

• LNK6668K.pdf