The term PMIC refers to a class of
integrated circuits that perform various functions related to power requirements. A PMIC may have one or more of the following functions: •
DC-to-DC conversion •
Battery charging •
Power-source selection •
Voltage scaling • Power sequencing • Miscellaneous functions Power management ICs are
solid-state devices that control the flow and direction of electrical power. Many electrical devices use multiple internal
voltages (e.g., 5 V, 3.3 V, 1.8 V, etc.) and sources of external power (e.g., wall outlet, battery, etc.), meaning that the power design of the device has multiple requirements for operation. A PMIC can refer to any chip that is an individual power related function, but generally refer to ICs that incorporate more than one function such as different power conversions and power controls such as voltage supervision and undervoltage protection. By incorporating these functions into one IC, a number of improvements to the overall design can be made such as better conversion efficiency, smaller solution size, and better heat dissipation. ==Features==