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PMIC - Voltage Regulators - DC DC Switching Regulators

The MAX751CPA is a 16-pin IC that can be used as a DC-DC switching regulator. It offers a wide range of input voltage from 2.7V to 20V and a low quiescent current of 50µA. It has an adjustable 50µA to 1mA output current with an accuracy of ±0.5%. In addition, it can deliver up to 150mA of output current with an input voltage as low as 4V.

Application

MAX751CPA is typically used in powering up consumer electronics with single batteries. It can be applied to continuous conduction mode (CCM) buck regulator with low quiescent current and high power density. It is able to handle more output current than other voltage regulators and can be used in a wider range of applications. Therefore, it is often used in applications such as USB charging ports, portable entertainment systems, consumer electronics, automotive and industrial supplies, data communication systems and more.

Working Principle

The MAX751CPA voltage regulator is a DC-DC switching regulator. It works by alternately switching the input voltage into an inductor and then transferring that energy out to the load. The inductor store energy as magnetic field when the switch is on and releases the energy when the switch is off. The output voltage is determined by the ratio of the time the switch is on versus the time the switch is off.

The MAX751CPA switches at a fixed frequency and has a current limit feature that is used to limit the output voltage in case the load gets too high. The device also has an adjustable output voltage, so it can be used to power a variety of devices that have different power requirements.

Conclusion

The MAX751CPA is an ideal choice for power applications that require a high power density with low quiescent current, as well as wide input voltage with an adjustable output voltage. It is designed to work with a single battery and delivers high power output with good accuracy, making it suitable for various applications such as automotive, industrial supplies, and consumer electronics.

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