Power Integrations

LNK302DG

LNK302DG Description

The LNK302DG from Power Integrations is a highly integrated offline switcher IC designed for efficient AC/DC power conversion in compact, energy-sensitive applications. Housed in an 8-pin SO package, this surface-mount device combines a 700V breakdown voltage MOSFET, a 66kHz switching frequency, and advanced fault protection in a single chip. It operates with a 69% duty cycle, making it ideal for low-power, non-isolated power supplies. Compliant with RoHS and REACH standards, it is suitable for global markets with minimal environmental restrictions (ECCN: EAR99).

LNK302DG Features

• Integrated 700V MOSFET: Eliminates the need for an external switch, reducing BOM cost and PCB space.
• Multi-Mode Control: Optimizes efficiency across load ranges (e.g., frequency jittering for low EMI).
• Comprehensive Protection: Includes current limiting, open-loop detection, overtemperature shutdown, and short-circuit protection for robust operation.
• 66kHz Switching: Balances efficiency and noise, suitable for EMI-sensitive designs.
• Wide Input Range: Supports universal AC input (85V–265V) for global compatibility.
• MSL 1 (Unlimited): No moisture sensitivity concerns during storage or assembly.

LNK302DG Applications

• Low-Power Adapters: Phone chargers, IoT devices, and auxiliary power supplies.
• LED Drivers: Non-dimmable LED lighting with constant-current output.
• Home Appliances: Smart meters, HVAC controls, and small motor drives.
• Industrial Systems: Isolated bias supplies for sensors and relays.
• Consumer Electronics: Set-top boxes, routers, and USB-powered devices.

Conclusion of LNK302DG

The LNK302DG stands out for its high integration, reliability, and cost-effectiveness, making it a preferred choice for designers of compact offline power supplies. Its built-in protections and universal input compatibility reduce design complexity, while the surface-mount package aligns with modern manufacturing trends. Ideal for applications demanding low standby power (<100mW) and robust performance, this IC is a versatile solution across consumer, industrial, and lighting sectors.