BQ771806DPJT

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The BQ771806DPJT is a battery fuel gauge IC optimized for single-cell Li-Ion and Li-Ion polymer applications. This IC performs precise monitoring and control functions to ensure safe and reliable charging and discharging of a single-cell Li-Ion or Li-Pol battery, as well as precise gas gauge functions such as battery chemistry estimate, coulomb counting, temperature compensation, and reporting of physical battery information. It provides long-term stability and precise results. This makes it a valuable addition to portable electronic devices.

Application Field

The main application field of the BQ771806DPJT fuel gauge lies in mobile device applications that use single-cell Li-Ion or Li-Pol batteries. This IC is ideal for hand-held electronic devices such as PDAs, digital cameras, mobile phones, MP3 players, and medical equipment. It is also suitable for data loggers, and automotive audio/video systems.

The IC offers over-discharge and over-charge protection as well as precise coulomb counting to ensure that the battery is safely and reliably charged and discharged. It is also capable of displaying the current charge, voltage, and temperature levels of the battery. This information can be used by the system to accurately monitor battery performance and health.

Working Principle

The BQ771806DPJT fuel gauge is based on the principle of coulomb counting, in which the battery\'s charge is accurately recorded on a very small chip. It features an internal SOC calculator that is used to monitor the charge level of the battery over time. This allows for precise monitoring and control of the battery\'s charge and discharge cycles.

The BQ771806DPJT fuel gauge also offers temperature compensation and safety features to ensure the safety and reliability of the battery. It includes over-voltage, over-current, and over-temperature protection. It also includes a programmable watchdog timer to ensure system stability.

In addition, the BQ771806DPJT fuel gauge features a self-calibrating algorithm to ensure the accuracy of its gas gauge readings. This algorithm adjusts its internal parameters to account for any changes in the battery\'s capacity or internal resistance. This allows for precise and consistent results even through extended periods of use.

Overall, the BQ771806DPJT fuel gauge is a powerful and versatile fuel gauging IC for single-cell Li-Ion or Li-Pol batteries. It offers precise monitoring and control functions, temperature compensation features, and a programmable watchdog timer to ensure system stability. It is an ideal choice for mobile device and automotive applications.

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