BQ771808DPJR

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Battery management involves practices to take care integral parts of a battery such as the cells, the charging system, and the life cycle of the battery. The BQ771808DPJR is an advanced battery Management Integrated Circuit (PMIC) that utilises state-of-the-art technologies such as digital or analogue-based monitoring, precision precision-current and voltage measurement, adaptive charging, temperature regulation, and digital branching and sequencing. This PMIC provides high accuracy and reliability features with low power dissipation in a small integrated package.

The BQ771808DPJR is suitable for battery powered applications which require advanced safety and performance, such as medical, consumer, and industrial systems. This PMIC is primarily intended for use in two- and three-cell lithium-ion and lithium-polymer pack-based systems with multiple operating voltages and diverse charging architectures. It provides an ideal solution for space-constrained designs with functions such as gas guage, dual cell monitoring, dedicated system buses for communication, and adjustable end-of-charge voltage. It includes highly accurate measuring algorithms, voltage and current protection, and a variety of integrated features that reduce component count, simplify integration, and extend the battery lifetime.

The BQ771808DPJR supports a variety of additional features such as parametric gas guage with fuel-level data, system thermistor monitoring with over-temperature detection, and active balancing modes. It supports low-frequency dynamic setting changes, and supports different protocol to support communication with system controllers. The integrated voltage protection features provide pre-defined or programmable limits for over-charge, under-charge, over-voltage, under-voltage, and over-current.

The BQ771808DPJR incorporates two high-efficiency charge controllers that can provide adaptive charging for two- and three-cell lithium-ion and lithium-polymer cells/packs. The ‘Charge Control 1’ and ‘Charge Control 2’ can provide fast charging, regular charging, and trickle charging with adjustable step rates. The integrated current regulation feature provides the ability to limit the total charging current to the system. It also monitors cells’ temperatures and output voltages, and provides system outputs for low cell voltage, temperature, battery charging status, and temperature warnings.

The BQ771808DPJR is a highly configurable device with a wide range of operating parameters such as charge/discharge currents, end-of-charge thresholds, and safety thresholds. The integrated gas gauge feature enables accurate behavior of a battery during charge, discharge, and storage, and enables precise estimation of the remaining energy and capacity of the battery. The BQ771808DPJR also includes programmable pass codes to prevent unauthorized access from the system.

In conclusion, the BQ771808DPJR is an advanced battery management integrated circuit that provides advanced safety, performance, and flexibility for battery powered applications. It provides high accuracy, reliability, and low power dissipation with a wide range of features to simplify integration and extended battery life. The integrated features provide efficient monitoring and protection to ensure safe and reliable operation, while the configurable parameters make it suitable for a variety of applications.

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