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I. What is PMIC
PMIC is the abbreviation of power management IC, the main feature is the high integration degree, the traditional multi-output power supply package in a chip so that the multi-power application scenario has higher efficiency, and smaller size. PMICs are often used in CPU systems, such as set-top box design, intelligent voice speaker design, large industrial control equipment design, etc.
A single PMIC can manage multiple external power supplies, mapping different system requirements to the appropriate regulator output voltage. They can also be used on a variety of processors, system controllers, and end applications, requiring only changes to the relevant register settings or firmware, without the need to redesign a new integrated circuit (IC).

The PMIC market is growing by leaps and bounds because of several current trends. One trend is the consumer's pursuit of wireless mobility, which has created a large demand for small, battery-operated devices and the consequent need for more highly integrated power management solutions.
At the same time, there is a growing demand from consumers and manufacturers for products that are energy efficient and reduce carbon emissions. The global "green" trend has increased the demand for electronic products with efficient power management, making power management a very important and popular feature.