Pi switching power supply chip is an efficient power management device, which can realize a variety of power management functions, including voltage regulation, overcurrent protection, overtemperature protection. It can be widely used in a variety of electronic devices, such as smart phones, tablets, digital cameras and so on. The chip has the advantages of small size, high efficiency and low power consumption, which can improve the stability and reliability of the equipment. At the same time, it can also save electricity, reduce the energy consumption of equipment, is conducive to environmental protection and energy saving.