BQ24140YFFT

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PMIC - Battery Chargers are essential components of rechargeable battery-powered devices. BQ24140YFFT is one of the most popular battery chargers designed for multiple-cell Li-Ion and Li-Polymer batteries. It integrates a wide range of features and the flexibility to support battery configurations from a single-cell up to four-cell Li-Ion battery stack. BQ24140YFFT is suitable for both fast and slow charge requirements. It has built-in safety features that provide protection against short-circuit, overtemperature and reverse discharge. In this article, we will discuss the application fields and working principle of BQ24140YFFT.

Application Fields

BQ24140YFFT is primarily used in portable power applications. It is mainly suitable for battery-operated wide range of portable devices such as mobile phones, PDAs, digital cameras and digitalvideo camcorders. In addition, BQ24140YFFT is also used in automotive, consumer electronics, medical and bio-medical, and other industrial and commercial applications. This device is designed for space-constrained applications such as ARM-based smart phones, personal DNA analyzer and portable ultrasound scanners.

Working Principle

BQ24140YFFT offers a single-stage Li-Ion battery charge management solution, providing high performance and reliability with few external components. It employs a constant current/constant voltage (CC/CV) charge algorithm for battery charge control. The device is capable of operating with an input source of 1 or 2A, constant current and constant voltage. Furthermore, it supports both fast and slow charge. During fast charging, BQ24140YFFT monitors battery voltage and adjusts the charging current accordingly. When the battery reaches its full charge, the device seamlessly transitions into a trickle charge state in order to maintain the battery\'s charged state. During slow-charge, the device adjusts the charge current based on the battery\'s temperature. BQ24140YFFT also provides thermal cut-back regulation to limit the power dissipation in the system. In addition, the device offers overcharge protection and cell balancing, to ensure safe and efficient charging of the battery.

BQ24140YFFT also integrates a series of advanced features such as temperature and ac line monitoring, programmable overvoltage protection, and adjustable voltage and current limits. These features make BQ24140YFFT an ideal solution for battery applications, offering higher system reliability and providing protection against short-circuit, over temperature and voltage. In addition, the device offers the flexibility to support a variety of battery chemistry and pack configurations. This allows the user to customize the device to suit the exact needs of their application.

Conclusion

BQ24140YFFT is a one-stop battery management solution for a variety of portable power applications. It offers efficient and reliable charge control, as well as advanced features such as selectable voltage and current limits, programmable overvoltage protection, and temperature and ac line monitoring. In addition, the device\'s flexibility allows for the support of multiple cell Li-Ion and Li-Polymer batteries, maximizing the life of the battery and minimizing power consumption. Thus, the BQ24140YFFT is the ideal choice for a wide range of portable devices, automotive, consumer electronics, medical and other industrial and commercial applications.

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