MAX1945REUI+T

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The MAX1945REUI is a high-efficiency, DC-to-DC synchronous switching regulator with integrated power MOSFETs. It provides a constant-output voltage of 39V and offers high-efficiency output regulation, robust over-temperature protection, and low output noise. The MAX1945REUI provides a simple solution for all kinds of application fields, since no external components are required. It offers high efficiency, wide load-range and excellent peak-to-peak and ripple control performance.

Application Field

The MAX1945REUI is suitable for a wide range of DC-to-DC applications, ranging from consumer electronics, to industrial, medical and automotive. The device can also be used in battery-powered systems, such as laptops, tablets and mobile phones. It can provide high-efficiency regulation for applications that require a low output voltage, such as buck-converters, amplitude modulators and regulators for 3.3V and 5V rails.

Working Principle

The MAX1945REUI utilizes a synchronous buck-converter topology, which allows it to achieve high-efficiency output regulation. The buck-converter topology is basically a voltage regulator circuit that produces an output voltage that is regulated based on the switching operation of a pair of power transistors. The MAX1945REUI utilizes two integrated power MOSFETs to switch power with two different switching frequencies. The higher frequency operates when the lower frequency encounters a high load and when the system is under light load conditions.

The topology of the MAX1945REUI inherently provides a better solution for thermal protection than linear regulators, since the entire switching process occurs within the input power range. This is why this switching regulator is capable of providing robust over-temperature protection. Additionally, the low output noise that it provides supports low-noise systems, such as audio and video applications.

Conclusion

The MAX1945REUI is a highly efficient and robust DC-to-DC switching regulator with integrated power MOSFETs, suitable for a wide range of applications. It offers an easy solution with no external components required, and provides high efficiency, wide load-range and excellent peak-to-peak and ripple control performance. Additionally, its topology allows it to provide more robust over-temperature protection and low output noise.

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