BQ294504DRVR Integrated Circuits (ICs)

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Power management integrated circuits (PMICs) are an important component in mobile devices due to the need to manage complex power rails and optimize power efficiency, stability, and system integration. Battery management is a crucial aspect of power management, and PMICs play an important role here by providing optimized voltage regulators and controllers to maximize battery performance. TI’s BQ294504DRVR is a multi-chemistry battery management IC that offers optimal performance and flexibility for battery solutions, making it perfect for a variety of mobile applications.

The BQ294504DRVR is a multi-channel, multi-chemistry battery protection and management IC, designed to enable a complete protection and monitoring system for one or two Li-Ion or Li-Po batteries for portable applications. It has two Li-ion/ Li-Po individual cell protection and management channels, each with its own signals, as well as an integrated circuit controller to handle all of the protection signals and messaging between the channel and the system. In addition, it can handle rare cell conditions such as undervoltage, overvoltage, over-current, and over-temperature conditions.

The BQ294504DRVR has a wide operating range, from 3.3V to 7.5V, and a wide input voltage range. It can communicate with the host system through an industry standard I2C interface, enabling embedded firmware to configure and adjust the protection threshold levels. The BQ294504DRVR can protect the battery system in applications with up to 18V input voltage and up to 30V output voltage, and it offers a two-stage protection that can protect both the battery system and the charging port.

The BQ294504DRVR integrates dedicated hardware solutions and firmware algorithms to provide maximum battery system lifecycle. It is an ideal solution for embedded power solutions due to its small form factor and its feature-rich capability set. It is designed to manage both single- and dual-battery power management solutions, as well as single-cell battery protection solutions. The BQ294504DRVR offers a comprehensive cycle count for each cell, and supports recovering cells that have been previously over-discharged or over-charged.

In terms of working principle, the BQ294504DRVR utilizes five bus verbs including I2C address, chip enable, interrupt, serial data, and serial clock to control the charge and discharge direction and limit the current operation of the battery according to certain rules. It also has internal high precision voltage regulation and a dedicated safety correlation detection circuit. This allows it to accurately measure the battery\'s voltage, temperature, and total current to ensure accurate battery protection. The BQ294504DRVR can also detect unusual conditions, such as deep-discharging, current-overload, and temperature-overload, to protect the battery and system.

The BQ294504DRVR is a versatile, low-power, multi-chemistry PMIC designed for battery management solutions in mobile devices. It is designed to provide superior battery system protection and enhanced monitoring capabilities, allowing mobile devices to use battery system solutions with greater performance and flexibility than before. Its wide operating range, wide input voltage range, and I2C interface make it the perfect solution for battery system designs requiring extra protection and monitoring.

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