MCP73838T-NVI/UN

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Battery chargers are essential components used in a wide range of electronic devices for energy storage and usage. The MCP73838T-NVI/UN from Microchip is a linear charge management system that has been designed for use in two-cell Li-Ion/Li-Pol battery packs. It features an integrated DC-DC controller and regulated output voltage, offering a cost-effective solution with high integration suitable for many applications.

The MCP73838T-NVI/UN has an application field in portable battery-powered devices such as Bluetooth headsets, toys, remote control units, exercise/fitness equipment and personal medical/wellness devices. It also finds use in many other portable consumer products such as digital cameras, GPS receivers, and portable gaming devices. Its cost-effective, high integration, and features such as constant current/constant voltage (CC/CV) charging, low-current shutdown, and variable charge current make it ideal for use in many applications.

The MCP73838T-NVI/UN is a highly integrated linear charge management system for two-cell Li-Ion/Li-Pol battery packs. It integrates a DC-DC controller that regulates the charge current and output voltage. It also features a programmable constant current/constant voltage (CC/CV) charging profile that allows the charge rate to be tailored to the application, and a low-current shutdown mode helps prevent battery under-voltage and over-voltage conditions. The IC includes many safety features such as over-temperature protection, short-circuit protection, and overcharge detection, which protect the battery from damage.

The MCP73838T-NVI/UN also has a wide voltage input range of 2.2 V – 5.5 V, making it suitable for use in a variety of battery types and sizes. The device can be easily used in applications where space and power consumption are of particular concern, such as small form factor applications or battery-powered portable equipment. The device also has a low quiescent current of 0.1 μA, making it suitable for applications that require low power consumption in order to extend battery life.

The working principle of the MCP73838T-NVI/UN is based on the fundamental operation of a linear power supply. The power supply is used to both convert an input voltage to a desired output voltage and to provide feedback control in order to maintain a specified output current and voltage. The device achieves this by monitoring the output voltages and adjusting the charge rate accordingly. In the case of the MCP73838T-NVI/UN, the device monitors the cell voltage of the battery pack and adjusts the charge current accordingly to maintain the required charge profile.

The MCP73838T-NVI/UN from Microchip provides a compact, cost-effective solution for sophisticated two-cell Li-Ion/Li-Pol battery charging applications. With its wide input voltage range and low-current shutdown mode, it can be used in a variety of applications that require an efficient and cost-effective power solution. With these features and its integrated DC-DC controller, the device provides a reliable and easy to implement charging solution for many battery-powered applications.

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