MCP73838T-NVI/MF

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Microchip Technology (MCP73838T-NVI/MF) is an elegantly designed battery charger IC, which is designed to satisfy the increasing demands of customers in limited space systems, such as Ultrabooks, tablets and other mobile devices. It can be used to charge single-cell, 1S (one-series) Li-Ion and Li-polymer batteries. The chip provides up to 3.1 A charging current for 1S Li-Ion/Li-polymer application.

MCP73838T-NVI/MF belongs to the category of PMICs (Power Management Integrated Circuits) and Battery Chargers. PMICs are essential components, which can help enhance power management efficiency and reduce system size with integrated flexibility, while protecting the circuit from power failure. On the other hand, battery chargers are used to charge different types of batteries with various voltage levels, so as to ensure their safe and long performance life. MC73838T-NVI/MF integrates both of the PMIC and battery charger function.

The MCP73838T-NVI/MF performs the charging cycle in three stages: pre-charge, fast-charge and top-off charging. Pre-charge phase is used to determine the battery’s state and condition, and prevent extreme charging conditions from a completely discharged battery. In the fast-charge phase, the charger provides up to 3.1 A current to safely and quickly charge the battery. During the top-off phase, the charger monitors the battery voltage and provides a constant current to keep the battery at full charge. It is also able to stop charging when the battery reaches full charge and is able to restart the charging cycle if necessary.

The MCP73838T-NVI/MF integrates multiple safety features, such as overvoltage and overcurrent protection, thermal regulation and reverse current protection, to ensure safe charging. It also comes with two selectable charging modes, Host-mode (H-Mode) and Battery –Mode (B-Mode). In H-Mode, the chip requires the input supply voltage to be higher than the battery’s full charge voltage, while in B-Mode, the input voltage should be lower than the battery’s full charge voltage.

In conclusion, MCP73838T-NVI/MF from Microchip Technology is a high-performance and reliable battery charger IC powered by PMIC that can be used for charging 1S (one-series) Li-Ion and Li-polymer batteries. It supports up to 3.1 A charging current and includes integrated safety features to protect the circuit from dangerous switching conditions. Furthermore, it offers two selectable charging modes, making it suitable for a wide range of applications.

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