CAT6500 3: A Power Selector Switch Application
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Batteries in some portable devices may be charged from two different power sources, such as a computer USB port or an AC wall charger, and require a dual input switch. This application note describes how MOSFET power selector switches can minimize voltage drop and reduce heat dissipation and overall component size. The single circuit CAT6500 integrates two 3 amp bidirectional power switches that allow system batteries either to be charged or to power external peripherals.