MPQ4420AGJ-AEC1-P

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Introduction

The MPQ4420AGJ-AEC1-P is a synchronous step-down (Buck) regulator with integrated FET controllers in a 4x4mm small package. It provides 2A continuous output current with a wide 9V-36V input voltage range. The MPQ4420AGJ-AEC1-P features a wide range of features including an adjustable output voltage, low ripple noise, overcurrent protection, and over-temperature protection. The step-down converter is suitable for applications such as computing, battery powered devices, industrial control, communication, automotive systems, and lighting. In this paper, we will discuss the application field, features and working principle of the step-down regulator.

Application Field and Features

The MPQ4420AGJ-AEC1-P is a high-performance, integrated synchronous step-down regulator designed for battery-powered systems that require tight voltage regulation accuracy. The adjustable output voltage of the MPQ4420AGJ-AEC1-P can be adjusted between 0.8V and 5.5V with a minimum modulation frequency of 250kHz. The MPQ4420AGJ-AEC1-P also features low ripple noise, over-current protection, and over-temperature protection. In addition, the module offers a very low quiescent current to maximize battery life. The integrated FET controllers allow for a compact 4x4mm small package and excellent thermal performance, which makes the device suitable for a wide range of applications such as computing, battery powered devices, industrial control, communications, automotive systems, and lighting.

Working Principle

The MPQ4420AGJ-AEC1-P synchronous step-down regulator is based on a fixed frequency pulse width modulation (PWM) control scheme. In this scheme, the output voltage is regulated by comparing an internal reference voltage to an external feedback voltage. When the external feedback voltage is lower than the internal reference voltage, an internal current source turns on, thus increasing the output voltage. When the external feedback voltage is higher than the internal reference voltage, the internal current source is turned off, thus decreasing the output voltage. The output voltage is therefore regulated by modulating the on/off duty cycle of the internal FET switch.

The MPQ4420AGJ-AEC1-P features a wide range of features and protections to ensure maximum reliability and performance. These features include programmable over-current protection, over-voltage protection, and over-temperature protection. Additionally, the integrators have provided short-circuit protection and soft-start protection, which prevents inrush current during start-up and prevents overshoot when recovering from a fault.

Conclusion

The MPQ4420AGJ-AEC1-P is a high-performance, integrated synchronous step-down regulator designed for battery-powered systems that require tight voltage regulation accuracy. The adjustable output voltage of the device can be adjusted between 0.8V and 5.5V with a minimum modulation frequency of 250kHz. The integrated FET controllers allow for excellent thermal performance, which makes the device suitable for a wide range of applications such as computing, battery powered devices, industrial control, communications, automotive systems, and lighting. In addition, the device includes a wide range of features and protections to ensure maximum reliability and performance.

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