MP8125EF-LF-Z

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MP8125EF-LF-Z, or Multi-Phase Buck Converter, is a special purpose voltage regulator device manufactured by Melexis. It is typically used in cellular phones, digital cameras, modems and other consumer electronics. The Multi-Phase Buck Converter utilizes a mixed-frequency, multi-phase switching regulator circuit, to provide a continuous output voltages over a wide input voltage range. It is capable of delivering a maximum current of 1.25A and a typical efficiency of 94%.

This regulator is ideal for use in applications that require a stable voltage over a wide input voltage range, such as when powering the memory and logic portion of digital circuits. Its integrated many features, such as voltage margining, Power Fail (PF) output, Phase Lock Loop (PLL), fault protection and over-voltage protection makes it an ideal choice for many applications. The MP8125EF-LF-Z comes in a 5x5x2 millimeters package, making it attractive for space-restricted designs.

The Multi-Phase Buck Converter is a type of switching regulator that relies on a feedback loop and pulse width modulation to accurately regulate the output voltage. It works by varying the width of the pulses applied to the switching transistor to adjust its duty cycle. The duty cycle of the transistor determines the amount of time that current passes through, thus varying the overall output voltage. The MP8125EF-LF-Z Multi-Phase Buck Converter utilizes an internal oscillator to rapidly switch the transistor on and off, which improves output voltage regulation. The feedback loop monitors the output voltage and adjusts the duty cycle accordingly.

The device features programmable features, such as a power-fail delay circuit and an over-voltage and under-voltage shutdown circuit. The power-fail circuit ensures a smooth switchover to an alternate power source. The over-voltage and under-voltage shutdown circuits can be programmed to either prevent further damage if the output voltage goes too high, or to turn off the device if the output voltage goes too low. This device also features programmable over-current protection, which prevents damage caused by excessive output current. Other features include voltage margining to accurately adjust the output voltage, and built-in thermal protection.

The MP8125EF-LF-Z Multi-Phase Buck Converter is ideal for a variety of applications requiring a precise, low noise output voltage. It’s features, high efficiency and small package size make it an attractive option for many designs. It is a specialized voltage regulator device providing precise, high efficiency power regulation for many applications.

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