本文档介绍了使用便携式电器开关电源来控制外设功能的概念。 AN11159 Distributed power in portable devices Rev. 1 ― 16 March 2012 Application note Document information Info Content Keywords distributed power, Low DropOut (LDO) regulators, DC-to-DC converter, load switch, quiescent current, load current Abstract This document describes concepts for portable appliances using switchable power supplies to control peripheral functions. A focus is set on voltage conversion and power distribution in the application. Many different voltages are required for the various ICs in modern mobile systems. The central battery supplies power to ma……