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PMIC : ウィキペディア英語版
Power management integrated circuit

Power management integrated circuits (power management ICs or PMICs) are integrated circuits (or a system block in a system-on-a-chip device) for managing power requirements of the host system. A PMIC is often included in battery-operated devices such as mobile phones and portable media players.
==Overview==
Power management ICs are solid state devices that control the flow and direction of electrical power. They may provide high efficiency power conversion that minimizes energy loss (heat), and are used in mobile devices, TVs, and cars.〔http://finance.yahoo.com/news/why-ibm-sold-semiconductor-division-130027165.html〕 Many devices have multiple internal voltages (e.g., 5 V, 3.3 V, 1.8 V, etc.) and sources of external power to charge their batteries including USB.〔http://www.ti.com/lit/an/slyt451/slyt451.pdf〕
The term 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:〔http://www.linear.com/products/power_management〕
* DC to DC conversion
* Battery charging
* Power-source selection
* Voltage scaling
* Power sequencing
* Miscellaneous functions

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Power management integrated circuit」の詳細全文を読む



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