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PSoC® 3 and PSoC 5LP – Single-Cell Lithium-Ion (Li-ion) Battery Charger

PSoC® 3 and PSoC 5LP – Single-Cell Lithium-Ion (Li-ion) Battery Charger

AN73468 explains a single-cell Lithium-Ion (Li-ion) battery charger implementation using PSoC 3 or PSoC 5LP. Two types of implementations — linear and switching type are supported. An attached PSoC Creator project, which includes a charge display tool, demonstrates Li-ion battery charging.

Li-ion batteries are used in a wide range of systems such as cameras, cell phones, electric shavers, and toys. The charging circuit for the batteries can either be an integral part of the system (online charging) or an external plug-in circuit (offline charging). With its wide range of devices, PSoC offers a cost-effective solution in both segments. And with its configurable digital and analog features, PSoC 3 or PSoC 5LP enables implementation of other critical tasks required in the system.

Consider a case of an electric shaver that uses Li-ion battery charger logic and a motor to drive the shaver blade. Both of these major tasks can be run from a single PSoC 3 or PSoC 5LP device, which results in lower cost and small PCB size. Small size is important in battery operated (portable) systems.

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