MCP73833-GPI/MF

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A PMIC - Battery Chargers Product, the MCP73833-GPI/MF, forms the core of a systems-level solution for battery management applications. The MCP73833-GPI/MF integrates current-limit and thermal foldback protection features for total system protection. MCP73833-GPI/MF is a very complex semiconductor package. This article will discuss the application field and working principle of MCP73833-GPI/MF.

Application Field of MCP73833-GPI/MF

MCP73833-GPI/MF is a single-cell linear Li-Ion and Li-Pol Battery Charger,used primarily in portable devices. It is designed to meet the high specifications required by portable electronics, including low quiescent current, high accuracy, and high-performance thermal management. MCP73833-GPI/MF is ideal for single-cell rechargeable battery charging applications such as mobile phones, PDAs, portable audio players, digital media players, and digital cameras. It is also suitable for other single-cell battery applications, such as medical and industrial.

The MCP73833-GPI/MF contains a programmable charge current and charge temperature monitor. It features automatic power-save mode and automatic restart. The MCP73833-GPI/MF also supports automatic recharging of depleted cells, over-temperature protection, and thermal limits that protect the battery from overcharging. The battery charge protection level is optionally selectable.

Working Principle of MCP73833-GPI/MF

The working principle of MCP73833-GPI/MF is based on several categories of functions. These include:

• Charge/Discharge Control: The MCP73833-GPI/MF is designed to control the charging and discharging of single-cell Li-Ion and Li-Pol batteries. It works in constant-current (CC) or constant-voltage (CV) modes.
• Current/Voltage Monitoring: The MCP73833-GPI/MF has integrated current and voltage monitoring features. It can measure the battery current and charging/discharging voltage via an internal A/D converter.
• Thermal Monitor: The MCP73833-GPI/MF integrates an advanced thermal monitoring system. This system is designed to reduce the power when the junction temperature increases. This prevents the battery from becoming overheated.
• Power-On Reset (POR): The MCP73833-GPI/MF contains a power-on reset circuit. This circuit monitors the VDD voltage and will reset the device if the VDD voltage drops below a predetermined value.
• Over-Charge/Discharge Protection: The MCP73833-GPI/MF monitors the battery voltage to ensure that the battery does not overcharge or overdischarge. This prevents the battery from becoming damaged.
• Complete System Protection: Finally, the MCP73833-GPI/MF provides advanced system protection features. It includes power-saving, current-limit, and thermal foldback features. The MCP73833-GPI/MF also provides an active discharge mode to ensure that the battery does not overcharge.

The MCP73833-GPI/MF integrates all the necessary components in a single package. It can be easily interfaced with a battery monitoring module and other components to form a complete battery management system. The MCP73833-GPI/MF also provides protection against reverse-battery connection, over-temperature, and short-circuits.

In summary, the MCP73833-GPI/MF is a single-cell linear Li-Ion and Li-Pol Battery Charger designed to meet the high specifications of portable electronics. It provides charge/discharge control, current/voltage monitoring, thermal monitoring, power-on reset (POR), over-charge/discharge protection, and complete system protection. The MCP73833-GPI/MF is ideal for single-cell rechargeable battery applications, such as mobile phones, PDAs, portable audio players, digital media players, and digital cameras.

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