The FSQ501L is an integrated circuit (IC) component that belongs to the FSQ power switch (FPS) family. It is specifically designed for use in offline switched-mode power supplies (SMPS) found in various consumer and industrial applications. This IC offers a wide range of key features that enhance power supply efficiency, control, and protection.
One of the notable features of the FSQ501L is its highly integrated design, which incorporates a power MOSFET, PWM controller, protections, and other control circuitry into a single chip. This integration helps in reducing the component count and overall system cost.
The FSQ501L operates on a low quiescent current and provides a high level of energy efficiency, thanks to its advanced green-mode technology. This technology significantly reduces standby power consumption and, hence, enables compliance with various energy-saving regulations such as Energy Star and Blue Angel.
To ensure reliable and protected operation, the FSQ501L offers a suite of protection features. It includes a comprehensive set of protections such as overload protection, overvoltage protection, over-temperature protection, and feedback loop protection. These protections help in preventing damage to the IC, power supply, and connected components and ensure safe operation.
The IC features an internal high-voltage startup circuitry that enhances the power-on startup capability. This feature facilitates reliable startup across various input voltage and load conditions
