LNK6428K

LNK6428K - LinkSwitch-3 AC/DC Offline Switching IC

The LNK6428K from Power Integrations is a high-performance 10W flyback AC/DC offline switching IC featuring an integrated MOSFET and advanced protection circuitry. Part of the industry-leading LinkSwitch-3 family, this component delivers reliable isolated power conversion for industrial, telecommunications, and consumer applications.

Key Features & Benefits

• Integrated 725V MOSFET - Reduces component count and simplifies design
• 10W Output Power - Optimized for low-to-medium power isolated supplies
• Up to 85kHz Switching Frequency - Enables compact transformer designs
• Comprehensive Protection - Current limiting, open loop, over-temperature, and short circuit protection
• Flyback Topology - Industry-standard isolated converter architecture
• Wide Operating Temperature - -40°C to 150°C (TJ) for demanding environments
• Surface Mount 12-ESOP Package - Space-efficient design with exposed pad for thermal management
• RoHS Compliant - Meets environmental standards for global markets

Typical Applications

• Isolated AC/DC power supplies for industrial controls
• Telecom and networking equipment power modules
• Smart home and IoT device power adapters
• Auxiliary power supplies in automotive and aerospace systems
• Battery chargers and LED driver circuits

Why Choose LNK6428K?

The LinkSwitch-3 family delivers exceptional reliability and design flexibility. With integrated protection features and a proven track record in mission-critical applications, the LNK6428K reduces time-to-market while ensuring long-term availability for your production programs. Backed by Power Integrations' comprehensive technical support and reference designs.

Authenticity & Support Guarantee

All LNK6428K units are sourced through authorized Power Integrations distribution channels with full manufacturer traceability and documentation. We provide long lifecycle support to protect your production programs against obsolescence. Technical resources, reference designs, and design-in support available.

• LNK6428K.pdf