MPQ4485GU-LS-AEC1-Z

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DC-DC switching regulators allow designers to efficiently control the voltage or current sources at the output of a DC power supply in order to provide power to electronic circuits. The application field and working principle of the MPQ4485GU-LS-AEC1-Z switching regulator make it suitable for a variety of applications, including microprocessor core active load, memory card load and I/O conversion circuits. In this article, we will discuss the application field and working principle of the MPQ4485GU-LS-AEC1-Z switching regulator.

Overview

The MPQ4485GU-LS-AEC1-Z DC-DC switching regulator is an ultra-high-input voltage (8.5V-80V) regulator with an adjustable output voltage from 0.6V to 8V. It is suitable for powering microprocessors, memories and I/O circuits, as well as other industrial and consumer applications. In addition, its wide input voltage range, low dropout voltage, high accuracy and fast transient response make it a great choice for various applications. It features fast operating frequency (adjustable from 0.208M to 2M) and high efficiency, allowing it to deliver high performance and excellent energy saving.

Application

The MPQ4485GU-LS-AEC1-Z DC-DC switching regulator is ideal for powering microprocessors, memories and I/O devices in a variety of electronic systems, such as telecom and networking applications, automotive, industrial and medical applications. Additionally, it can be used to power LED lighting, and other automotive, industrial and consumer applications.

Working Principle

The MPQ4485GU-LS-AEC1-Z DC-DC switching regulator is designed using voltage mode control. The regulator employs an internal switching transistor, which is driven by a pulse width modulation (PWM) signal provided by an internal oscillator. The frequency of the PWM signal is adjustable from 0.208MHz to 2MHz.

When the input voltage exceeds the external feedback voltage, the regulator turns on the internal switching transistor, allowing the output voltage to rise until the feedback voltage level is reached. The regulator then turns off the internal switching transistor and stores the energy in the output filter, which is then used to maintain the output voltage. As the input voltage decreases, the output voltage is adjusted accordingly by the regulator, ensuring constant output voltage.

In addition, the regulator also features over-voltage, over-temperature and circuit protection, which can be programmed through an external pin. These functions provide the highest level of protection from over-voltage and over-temperature while also protecting the circuit from damage due to short-circuits, ground faults and transient voltages.

Conclusion

The MPQ4485GU-LS-AEC1-Z DC-DC switching regulator is an ultra-high-input voltage regulator suitable for a variety of applications, including microprocessor core active load, memory card load and I/O conversion circuits. It features wide input voltage range, low dropout voltage, high accuracy and fast transient response, allowing it to deliver high performance and excellent energy saving. Additionally, the regulator also has over-voltage, over-temperature and circuit protection, ensuring the highest level of protection from over-voltage and over-temperature, as well as other circuit-related problems.

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