The LNK302DGAU-TL is a highly integrated and efficient low power off-line switcher IC from Power Integrations' LinkSwitch-TN family. This device is designed to provide a simple and energy-efficient solution for low power isolated and non-isolated power supplies. It integrates a 700 V power MOSFET, oscillator, simple on/off control scheme, a high-voltage switched current source, frequency jittering, cycle-by-cycle current limit, and thermal shutdown circuitry onto a monolithic IC.

Applications

• Appliances: Ideal for powering appliances such as washing machines, refrigerators, and microwave ovens.
• Metering: Suitable for electronic metering applications, providing a stable and efficient power source.
• LED Drivers: Can be used in low power LED driver applications, ensuring consistent and reliable lighting.
• Standby Power Supplies: Excellent for use in standby and auxiliary power supplies where low power consumption is critical.

Features

• Integrated 700 V Power MOSFET: Simplifies design and reduces external component count.
• Self-Biased Supply: Eliminates the need for an external bias winding, reducing cost and complexity.
• Frequency Jittering: Reduces EMI emissions, simplifying compliance with regulatory standards.
• On/Off Control: Provides simple and efficient regulation.
• Cycle-by-Cycle Current Limit: Protects the power MOSFET from overcurrent conditions.
• Thermal Shutdown: Protects the device from over-temperature conditions.

Benefits

• High Efficiency: Delivers excellent efficiency, minimizing energy consumption and reducing heat dissipation.
• Low Component Count: Reduces system cost and simplifies manufacturing.
• Enhanced Reliability: Integrated protection features ensure robust and reliable operation.
• Simplified Design: Easy to design with, reducing time to market.
• Meets Global Energy Efficiency Standards: Helps designs meet stringent energy efficiency requirements.

Additional Details

The LNK302DGAU-TL operates at a switching frequency of 66 kHz. It is available in a small footprint SMD package. The device is designed to operate in a buck converter configuration for non-isolated applications and a flyback converter configuration for isolated applications. It is Pb-free and compliant with environmental standards. The device's built-in features, such as frequency jittering and cycle-by-cycle current limit, contribute to a cleaner and more robust power supply design. It's important to consult the manufacturer's datasheet for detailed specifications and application guidelines.