What is LNK304PN Chip?
The LNK304PN is a compact off-line switcher IC from Power Integrations, part of the LinkSwitch family. It is designed for low-power AC-DC power supply applications, providing an efficient solution for converting mains voltage to regulated low-voltage output. The LNK304PN is particularly suited for applications such as adapters, chargers, and LED drivers.
Key Features:
Integrated Power MOSFET: The LNK304PN incorporates a high-voltage power MOSFET within the chip, reducing the number of external components needed and simplifying circuit design.
High Efficiency: It achieves efficiencies typically greater than 70%, even at low loads, which is important for meeting energy efficiency regulations and standards.
Wide Input Voltage Range: The IC operates with an input voltage range of 85V to 265V AC, making it versatile for global use without additional voltage conditioning.
Low No-Load Power Consumption: The LNK304PN is designed to consume less than 100 mW during no-load conditions, aiding compliance with energy-saving standards like Energy Star.
Protection Features: It includes built-in protections such as over-voltage protection (OVP), over-temperature protection (OTP), and short-circuit protection, ensuring reliable and safe operation.
Applications:
- Power Adapters: Commonly used in compact wall adapters and chargers for various electronic devices.
- LED Lighting: Ideal for powering LED applications with low power requirements, providing stable power supply.
- Consumer Electronics: Suitable for powering small electronic devices and household appliances.
- Battery Chargers: Used in low-power battery charging designs for portable devices.
Technical Specifications:
- Input Voltage: 85V to 265V AC
- Output Power: Up to 5W in typical applications
- Switching Frequency: Approximately 66 kHz
- Operating Temperature Range: -40°C to +150°C
The LNK304PN is valued for its efficiency, simplicity, and built-in safety features, making it a popular choice for engineers looking to design low-power AC-DC converters. Its integration of critical functionalities into a single package helps reduce design complexity and overall system costs.
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