MCP73837T-FJI/MF

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PMIC or power management ic is an electronic integrated circuit that helps the system to monitor and regulate the power supply. One such PMIC is the MCP73837T-FJI/MF, which is an advanced linear charge management battery charger for single cell Li-Ion/Li-Polymer/LiFePO4 battery applications. This charger embeds a high-accuracy circuit for monitoring and controlling the essential phases of battery charging: pre-charge, fast-charge, and charge-maintenance. This charger also features system level protection, selectable via the I2C interface.

The MCP73837T-FJI/MF is a fully integrated advanced linear charger that supports automatic wide input voltage selection (from 6V (minimum) to 32V (maximum)) while providing advanced system level protection features such as input current limit, auto recharge, and thermal regulation. The charger is able to support all types of single cell, Li-Ion/Li-Polymer/LiFePO4 batteries, up to 2.85A (depending on application) while operating in a wide input voltage range, from 6V to 32V. It also integrates a highly accurate voltage and current regulation loop, ensuring a very fast charge cycle and temperature regulation during the charge cycle.

The main application area of the MCP73837T-FJI/MF is in portable devices like laptop PCs, tablets, and mobile phones. Thanks to its wide input voltage range, from 6V to 32V, the MCP73837T-FJI/MF is perfectly suitable for a wide variety of applications that require a battery charging system. This includes industrial applications such as remote monitoring, security devices, and medical systems.

The working principle of the MCP73837T-FJI/MF is based on charge management system, which consists of a linear power converter, a power source, a regulator IC, and a sensing circuit. The first stage of the charge cycle is the pre-charge phase, where the voltage of the battery is slowly increased until the battery reaches its maximum voltage or full charge level. During this stage, the charge current is limited in order to maintain the temperature within a safe range. Once the battery reaches its full charge level, the charge current is decreased and maintained at a “trickle” level by the regulator IC. In the final stage of the charge cycle, the charge current is tuned down to zero and the battery is disconnected from the power source. After that, the charger itself enters a power-saving mode.

The MCP73837T-FJI/MF has two dedicated signal lines that can be connected to the system\'s I2C interface. The signal lines are used to control the protection functions and monitor the battery parameters. Additionally, the signal lines can be set to send interrupts to the system to indicate the status of the charging process. As the MCP73837T-FJI/MF is designed to be used in multiple cell battery applications, the signal lines can also be used to monitor the battery parameters of each individual cell.

The MCP73837T-FJI/MF is an ideal solution for battery charging applications that require a fast, efficient, and safe charge cycle. Thanks to its wide input voltage range, from 6V to 32V, and its system level protection features, it is well-suited for a wide variety of applications, from remote monitoring and security to medical systems.

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