BQ24617RGET

BQ24617RGET Application Field and Working Principle

The BQ24617RGET is a fully integrated SmartLi-ion battery charge controller designed to support high performance, low system cost, and high efficiency. This device is a member of the BQ246XX product family and offers a programmable, dither-free termination current, and a high performance charger which can be tailored to support charging of one to four Li-Ion batteries in series configuration.

BQ24617RGET is suitable for a wide range of applications such as cell phones, notebooks, digital cameras, and similar products with Li-Ion batteries. This integrated battery charge controller supports charging with constant current/constant voltage (CC/CV) regulation, preconditioning, and automatic device recognition. With high charging accuracy and a low system cost, BQ24617RGET is designed to charge the battery in the most efficient manner possible.

Application Field:

The BQ24617RGET is primarily used in consumer electronics applications, such as mobile phones, notebook computers, and digital cameras. The device can be programmed to charge Li-Ion cells in series. The BQ24617RGET can be tailored to optimize the charger performance in various applications, such as power banks.

Working Principle:

The BQ24617RGET features a high performance charger based on charge cycle that can be tailored to support charging of one to four Li-Ion cells in series. The device controls the charging process in three steps which are the preconditioning, constant current charging, and the constant voltage charging. During the preconditioning phase, the battery voltage is monitored by the device in order to determine the battery condition and strategy accordingly. The constant current charging phase occurs after the preconditioning phase is completed; this is when the charge controller delivers a constant current to the battery. The constant voltage charging phase is the last part of the charging cycle and begins when the battery reaches a full charge condition. During this stage, the charge controller maintains a constant voltage on the battery.

The charging current monitor pin can be used to enable an additional feature such as the enable/disable charging function, which is controlled by the host device. This feature is useful when the host device needs to limit the total current flow while charging. The charge monitoring pin can also be used to enable additional peripheral functions such as temperature sensing and other safety features.

The BQ24617RGET also features a dither-free termination current, which allows the device to terminate the charge cycle when the full charge condition is reached. This feature helps to reduce the possibility of overcharging the battery, and helps to maintain battery safety.

Conclusion:

The BQ24617RGET is a high performance, low system cost, and high efficiency charge controller. This integrated battery charge controller is suitable for a wide range of applications such as cell phones, notebooks, digital cameras, and similar products with Li-Ion batteries. The device features a high performance charger based on charge cycle tailored to support charging of one to four Li-Ion cells in series. Additionally, the device can be programmed to enable/disable charging, as well as enable other peripheral functions such as temperature sensing. The device\'s dither-free termination current helps to reduce the possibility of overcharging the battery, and helps to maintain battery safety.