MCP73871T-4CCI/ML Integrated Circuits (ICs)

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The MCP73871T-4CCI/ML is a highly integrated, cost-effective Power Management IC (PMIC) for advanced, stand-alone Li-Ion/Li-Polymer battery charging solutions. This device can support a wide range of application fields. In addition, the MCP73871T-4CCI/ML provides system design flexibility with advanced charging and power management circuits, as well as a multitude of regulation and protection features.

Applications

The MCP73871T-4CCI/ML provides low-cost charging solutions, which range from small battery packs with single-cell Li-Ion/Li-Polymer configuration all the way up to larger battery packs which utilize multi-cell series configurations. This device is especially suitable for applications such as mobile phones, tablet PCs and other portable equipment.

The wide range of features and capabilities of the MCP73871T-4CCI/ML makes it a suitable choice for applications such as digital still cameras, portable medical equipment, portable navigation systems, and personal music and video players. The device includes a unique automatic system shut-down timer, which allows for cell configuration flexibility for lithium-ion batteries.

Working Principle

The main feature of the MCP73871T-4CCI/ML is the capacity to rapidly and accurately charge a wide range of 3.6-5V Li-Ion/Li-Polymer batteries. This feature enables the user to easily and effectively manage their charging and discharging cycles in a safe manner. The device utilizes a constant-current/constant-voltage (CV/CC) charging scheme, which provides the user with precise charging and voltage regulation.

In constant-current mode, the MCP73871T-4CCI/ML will deliver an optimal charging current up to 1A to the Li-Ion/Li-Polymer cell, which is constantly monitored and adjusted by the device. The constant-voltage mode will safely limit the output voltage of the device at 4.2V, thus eliminating any risk of cell overcharge.

The device also features an advanced protection circuit, which is used to protect the battery from overcurrent, overvoltage, and overtemperature conditions. The MCP73871T-4CCI/ML also includes an internal thermal protection circuit, which is designed to shut down the device in the event of an abnormal cell temperature condition.

Conclusion

The MCP73871T-4CCI/ML is a high-performance PMIC for advanced, stand-alone Li-Ion/Li-Polymer battery charging solutions. This device is equipped with multiple protection and regulation features, as well as a wide range of application fields. The device is capable of providing accurate and safe charging of 3.6-5V Li-Ion/Li-Polymer batteries, thanks to its advanced constant-current/constant-voltage (CV/CC) charging scheme. In addition, the MCP73871T-4CCI/ML includes an internal thermal protection circuit, which provides additional safety for the charger.

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