MCP73832T-3ACI/OT

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The MCP73832T-3ACI/OT device is a highly integrated single chip microcomputer controlled Power Management and battery management solution for Lithium-ion/Lithium Polymer based battery charger applications. At the heart of this battery charger solution is a precise 8-bit voltage and current monitoring/programming controller and charge algorithm. This chip provides superior regulation accuracy, optimization of charging time, a low overall system cost, low system complexity and a high areas of safety protection. The device features an adjustable full-scale voltage and current range that is programmable with an external resistor to match the required system needs. In addition, the device includes thermal fold-back, short circuit and current limit protection, as well as thermal monitoring. It can be used in consumer, industrial and automotive applications where battery charge is required.

The MCP73832T-3ACI/OT is mostly used in PMIC (power management IC) and Battery Charger applications. It is ideal for applications requiring precise battery charge control such as mobile phones, digital cameras, portable media players, High bandwidth Notebooks and other handheld applications. This device allows for charging of a single battery cell, or even multiple cells or multi-package batteries via an external FET. It also supports JEITA and pre-charge mode. This IC adds tremendous flexibility to the design process and simplifies the development of highly energy efficient and reliable battery charger solutions.

The MCP73832T-3ACI/OT has an adjustable full-scale input current and voltage range, which is set using external resistors. This chip has a precise 8-bit voltage and current monitoring/control block enabling tight regulation accuracy and optimized charging time. In addition, the device provides thermal fold-back, short circuit and current limit protection, as well as thermal monitoring. It also has several features which make this device very suitable for the demanding requirements of high capacity Lithium ion and Lithium Polymer batteries.

The MCP73832T-3ACI/OT works in the following way: A resistor divider is used to set the charger input voltage, which allows for its flexibility. In turn, an external FET is used to control the battery current and provide a dynamic low voltage threshold. The device uses its internal 8-bit microprocessor to monitor the battery voltage and current and is programmed to start/stop charging based on preset thresholds. Once the battery is charged to its preset maximum voltage, the device will send a signal to the external FET thus turning the charging off.

The MCP73832T-3ACI/OT provides a wide operating temperature range and allows for robust battery charging even under severe temperature conditions. The device employs several features to ensure safe battery charging such as over-voltage protection, over-temperature protection and thermal shutdown. It also enables low power consumption and allows for very low-ripple voltage and current outputs. The device is packaged in a small and space saving SOIC-8 package.

In conclusion, the MCP73832T-3ACI/OT is a highly integrated and cost-effective solution for reliable and precise battery charge control. It is used in Power Management and Battery Charger applications, where accuracy and low system cost are of utmost importance. The device allows for precise regulation of the charging process and provides features such as thermal fold-back, short circuit, current limit and thermal monitoring. This enables the device to be used in a wide range of applications, ranging from consumer, industrial, and automotive applications where battery charging is required.

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