BQ24753RHDT

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The BQ24753RHDT is an Intelligent System Power Manager (iSPM) with integrated power distribution, featuring a USB charger, one linear charger, one battery charger, and one 15A switch for Li-Ion/Li-Pol batteries. It is a highly integrated power management IC (PMIC) that offers power path management, power switch control, battery charging, N-channel FETs, and I2C communication interface. The BQ24753RHDT is designed to simplify the development process of a mobile device by providing a very low power system controller with an integrated battery manager.

The BQ24753RHDT is part of a family of low power system controllers and features a unique power path management and battery charging capability, allowing the system to seamlessly transition between battery and charger sources with no interruption. It utilizes a standard USB port to charge the Li-Ion/Li-Pol battery, and when the external charger is connected, the device automatically begins charging the battery from the external power source. The BQ24753RHDT also features a very low quiescent current of only 18.5µA in shutdown mode, making it one of the most power efficient devices in its class.

The BQ24753RHDT is most commonly used in applications such as mobile phones, tablet PCs, and other portable devices where a low-power, high-efficiency power management IC is required. The device integrated power distribution and power path management eliminates the need for external power switches and voltage regulators, reducing cost, PCB area, and overall system complexity. Additionally, the BQ24753RHDT offers a very low stand-by power consumption and is capable of operating down to 1.3V without a power switch, making it ideal for extended battery life applications.

Working Principle of the BQ24753RHDT: The BQ24753RHDT works by monitoring the external power source and battery status and serves to balance between the two sources as needed. The device utilizes several internal charge controllers to provide the most efficient power path with priority given to the battery status. The device also features an integrated USB charger for charging the Li-Ion/Li-Pol batteries when the external power source is not available. The USB charger supports up to 5V and can handle up to 1.5A for fast charging.

The BQ24753RHDT also features several safety features to protect the device from short circuit and overcurrent conditions. The device also offer protection against battery overcharge, overvoltage, and overtemperature conditions, providing a reliable and robust protection against system failure. Additionally, the device integrates an I2C interface, allowing for system monitoring, control, and configuration.

In summary, the BQ24753RHDT is an ideal PMIC for applications requiring a low-power system controller with an integrated battery manager, power switch, and I2C communications interface. The device offers power path management, power switch control, battery charging, N-channel FETs, and I2C communications, as well as a build-in USB charger, making it ideal for a wide range of mobile, consumer, and medical applications.

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