BQ7694003DBTR Integrated Circuits (ICs)

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PMIC – Battery Management refers to components that are used to provide power management in the power system design. This includes components such as voltage regulators, battery chargers, power supplies and temperature sensors. One such component is the BQ7694003DBTR. This component is a 4-cell synchronous battery management system device with direct-to-battery voltage measurement and sense resistor current sensing.

BQ7694003DBTR Application Field

The BQ7694003DBTR can be used in a variety of applications, including automotive, consumer electronics, medical and industrial. The device can manage and charge a variety of battery chemistries, including lead-acid, NiCd, NiMH and lithium ion. It also supports a variety of charging strategies, including trickle charging, pulse charging and timer-based charging. The device can handle both narrow and wide voltage input ranges, making it suitable for use in multiple different application areas.

BQ7694003DBTR Working Principle

The BQ7694003DBTR is based on an advanced synchronous architecture which enables it to measure and manage the state of charge, current, and voltage of four cells in the battery. The architecture combines battery sense resistor current sensing, independent OC threshold setting and direct-to-battery voltage measurement, allowing the device to accurately measure each cell voltage with minimal external components. The device includes an integrated FET driver with an 80mΩ RDS(ON) for improved efficiency and a minimum overcharge voltage protection which protects against overcharge during cell balancing.

The BQ7694003DBTR also features a multiple protection system that ensures safe operation in all scenarios. It implements a hardware over-voltage protection which disconnects the battery if it exceeds a predetermined voltage level. The device also includes a hardware reset pin which can reset the device in the event of an overvoltage or overtemperature condition. The BQ7694003DBTR also includes a timer-based cell balancing algorithm that allows for efficient and safe charge/discharge operations.

The BQ7694003DBTR also allows for flexible communication interface. It supports both push-pull and open-drain communication modes, making it compatible with both I2C and SMBus communication protocols. The BQ7694003DBTR also supports external temperature sensing, allowing it to accurately monitor the ambient temperature and prevent the battery from overheating. The device also supports integrated diagnostics and health monitoring, which helps identify and isolate faults in the battery.

In short, the BQ7694003DBTR is a 4-cell, synchronous battery management system device with integrated direct-to-battery voltage measurement and sense resistor current sensing. It is suitable for use in a variety of application fields, and its advanced protection and monitoring system ensures safe operation. Its flexible communication interface and integrated diagnostics add to its versatility and make it an ideal choice for power management in the power system design.

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