MAX8798ETX+T

Power Management Integrated Circuit (PMIC) is defined as an integrated circuit that combines power-related functions and detects, monitors, and controls power of a system. Specialized Power Management IC are specially designed optimized PMICs that provides specific power management applications which usually involve higher complexity. The MAX8798ETX+T IC is one of these specialized power management IC’s designed to enable a safe and efficient power delivery in applications such as mobile devices. This article will analyze the applications field and the working principle of the MAX8798ETX+T IC.

Application Field of MAX8798ETX+T IC

The MAX8798ETX+T IC provides flexible power management solutions for system applications that require efficient and safe power delivery. This IC is optimized to power mobile devices such as tablets, smartphones and other small form factor devices due to its high level of integration and low power draw. The device uses two integrated power paths to provide efficient power routing from the USB OTG input to the system load. This feature has the huge benefit of simplifying the mobile device design with only one IC. Moreover, the device provides the unique capability of providing up to 12A total current driven on each of the dual power MOSFETs along with power monitoring, Boost/LDO regulation, charging, and thermal protection.

Another advantage of using the MAX8798ETX+T is that its programmability feature allows the user to customize the device to meet their specific application requirements. This is quite beneficial as it allows the user to fine-tune the power management system depending on their own requirements, resulting in the most optimum performance.

Working Principle of MAX8798ETX+T IC

The MAX8798ETX+T IC combines various power-related functionalities in a single IC to deliver safe power management for mobile devices. The device holds two MOSFETs, both providing up to 12A current and integrated power paths that enable efficient power routing from USB OTG input to the system load. The MOSFETs are controlled by a two-phase synchronous step-down VCP converter.

The device features a programmable current limit, thermal limit, and various safety timers. It also includes a unique power monitoring system which monitors the voltage between the input and the MOSFETs along with the total load current. This feature helps protect the device from overload and prevent damage due to overcurrent and reverse current.

The device also includes a Boost regulator and a Low Dropout (LDO) regulator that allow adjustable output voltage and current, respectively. The Boost regulator is capable of providing an adjustable output voltage up to an 18V range, while the LDO regulator is able to provide up to 3A output current. This feature is beneficial as it enables the user to have precise control over their power managemen system.

The device is also protected from thermal stress due to its integrated thermal sensor and temperature comparator. The thermal sensor measures the device’s temperature and the temperature comparator sets the threshold which, when exceeded, triggers the thermal protection timer. This feature helps protect the device from over-temperature and any damage due to thermal stress.

Conclusion

The MAX8798ETX+T IC is a specialized power management IC designed for mobile devices that require efficient and safe power delivery. It combines various power-related functionalities in a single IC, such as two MOSFETs that can provide up to 12A each. It holds a two-phase synchronous step-down VCP converter and a power monitoring system that monitor the voltage and the total load current of the system. The device also provides programmability which allows the user to customize the device to meet their specific requirements. In addition, it includes a Boost regulator and LDO regulator for adjustable output voltage and current, as well as a thermal sensor and temperature comparator for thermal protection.