MAX4825ETP+T

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The MAX4825ETP+T is a type of power management integrated circuit, more specifically a power distribution switch, load driver, or PMIC. This integrated circuit is designed to manage energy in devices such as mobile phones, tablets, and laptops. TheMAX4825ETP+T can provide control for up to six independent rails and has a maximum on-state current of up to 8 A. The component features a low quiescent current of 4.5 µA, and is best suited for applications that require high efficiency and effective power management in a small footprint.

Application Field of MAX4825ETP+T

Maxim Integrated’s MAX4825ETP+T has a wide range of uses in applications such as mobile phones, tablets, and laptops. The component can be used to control up to six independent supplies, each using a single GPIO (general purpose I/O) port. It is ideal for managing multiple voltage rails required in mobile devices, such as the +3.3V, +1.8V, +1.0V, +2.8V, +0.9V, and +2.5V needed to power different hardware components. This IC is also suitable for automotive applications where low quiescent current is desired.

Working Principle of MAX4825ETP+T

The MAX4825ETP+T functions by providing power to up to six independent rails. For each rail, the device takes in an enable signal from a GPIO port and then controls the power supplied to it. When the enable signal is low, power is disconnected from the rail. When the signal is high, the rail is powered. This process can be adjusted to the application by varying the current limit, switching frequency, and pulse-width modulation of the signal.

The device is designed using a current-operated control system, meaning that the current blips are detected through the integrated sense resistor. If the current blips exceed the set level, the device transmits an over-current flag to a warning signal. Furthermore, the component can also be used to control load sharing between different power sources. It can take two input voltages and distribute the load evenly between the two, or alternately, the load can be shared unequally.

Conclusion

Maxim Integrated’s MAX4825ETP+T is an advanced PMIC that can be used for power management in mobile phones, tablets, and laptops. It features up to six independent supplies and a maximum on-state current of 8 A. The device uses a GPIO port to receive an enable signal and provides an over-current flag as a warning signal. The IC can be used for load sharing between two input voltages, or the load can be shared unequally. Its low quiescent current makes it an ideal choice for automotive applications.

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