MPQ3425DL-LF-P

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PMIC (Power Management Integrated circuits) are essential for controlling the power supply and gaining efficiency from every electrical device. The MPQ3425DL-LF-P is a DC/DC switching regulator part of PMIC, specifically belonging to Voltage Regulators.

Features and Functions

The MPQ3425DL-LF-P is a very compact DC/DC switching regulator that achieves high efficiency in a very small package. It is optimized for small to medium sized applications with current ratings up to 3 A. It features an integrated high voltage MOSFET, a low power sleep mode, and supports input voltages from 4.75 V to 20 V. The regulator has a wide output voltage range from 0.807 V to 13.2 V, allowing it to be used in a variety of applications such as LCD TVs, smartphones, and tablets. The regulator is designed to maintain an output voltage accuracy of ±1.5% over a wide temperature range. It has a high-efficiency switching frequency of up to 1MHz and a fast transient response to ensure stable operation during voltage changes.

Features and Applications

The MPQ3425DL-LF-P is designed for small and medium size applications that require reliable high efficiency, low voltage and current regulation. Its small package size and wide range of input and output voltages make it suitable for a variety of applications such as notebook computers, LCD TVs, tablets, and smartphones. Additionally, this switching regulator is edge-rate compensation and over temperature protection, making it a great choice for climate controlled and industrial PSU applications.

Working Principle and Operation

The MPQ3425DL-LF-P operates as an adjustable DC/DC switching regulator that achieves high efficiency through pulse width modulation (PWM). It features an integrated high voltage MOSFET and low power sleep mode. When enabled, the switching regulator acts as a high-speed on-off switch, rapidly charging and discharging energy in the output capacitance to regulate the output voltage. During each on-off cycle, the switching frequency is set to a set frequency and pulse width depending on the output voltage. As the duty cycle decreases, the power output increase in proportion to the length of the “on” cycle.

The switching regulator has an integrated voltage loop, which is a type of feedback loop that regulates the voltage. It compares the actual output voltage to the desired voltage. If the actual output voltage is different from the desired voltage, the regulator will adjust the duty cycle accordingly to achieve the desired voltage. It also features an under-voltage lockout (UVLO) that is used to protect itself from damage caused by low-voltage conditions. Furthermore, the switching regulator has integrated protection circuits for over-current, over-voltage, and over-temperature, which further protects the IC from damage.

Summary

The MPQ3425DL-LF-P is a DC/DC switching regulator of PMIC\'s Voltage Regulators. It is designed for small and medium size applications that require reliability and high efficiency. The high-efficiency switching frequency of up to 1MHz and fast transient response makes it suitable for a variety of applications. It is optimized for small to medium size applications with current ratings up to 3 A, featuring an integrated high voltage MOSFET, low power sleep mode and supports input voltages from 4.75 V to 20 V. The regulator has a wide output voltage range from 0.807 V to 13.2 V, allowing it to be used in a variety of applications such as LCD TVs, smartphones, and tablets. It has an integrated voltage loop, which is a type of feedback loop that regulates the voltage and integrated protection circuits to ensure lasting performance.

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