MCP73834-CNI/UN

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The MCP73834-CNI/UN is a battery charger controller designed for use with Lithium-Ion/Polymer batteries. The device is capable of charging up to eight cells in series and provides an effective charging solution for automotive, consumer, industrial, and medical applications. The MCP73834-CNI/UN has built-in protections against over-current, over-temperature, and short-circuit conditions. The device is also compliant with the Underwriters Laboratories (UL) standard for charging systems.

The MCP73834-CNI/UN works by monitoring the input or output current from the battery. When the current exceeds the selected charging current limit, the device terminates the charging cycle. This allows for better control of cell temperature and response to changes in system load. In order to ensure that the correct battery charging current is maintained, the device incorporates an adjustable input current limiting capacitor.

The MCP73834-CNI/UN has two different modes of operation: constant current and constant voltage. In constant current mode, the input current is limited based on the value of the current limiting capacitor. The device then varies the output voltage to maintain the input current. In constant voltage mode, the output voltage is kept constant and the input current is adjusted to maintain the desired voltage. The output voltage can be adjusted by adjusting the voltage setting pin.

The MCP73834-CNI/UN also includes battery balancing and cell protection features.Cell balancing is achieved by monitoring the individual cell voltages and reducing the charging current of cells that reach their maximum charging voltage. This helps to maintain uniform cell conditions and extend battery life. The device also includes over-discharge protection, which prevents over-discharge of the battery by limiting the output current below the minimum allowed limit when the battery voltage drops below its specified limits.

In addition to its ability to charge batteries, the MCP73834-CNI/UN can also be used to discharge batteries. This is accomplished by disabling the output current and connecting an external load to the device. The device can be used to discharge batteries of up to 8 cells in series.

Overall, the MCP73834-CNI/UN is an ideal choice for battery charging and other related applications. With its safety and protection features, adjustable input current limiting, and cell balancing and protection it is perfectly suited for automotive, consumer, industrial, and medical applications.

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