PQ1R27

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Linear voltage regulators play an important role in power management solutions. They provide a regulated output voltage with minimal noise, no load current, and low distortion. The PQ1R27 is a linear voltage regulator that is specifically designed for high frequency switching converters and offers a wide range of features and benefits. This article will focus on the application field and working principle of the PQ1R27.

Application Field of PQ1R27

The PQ1R27 is a synchronous monolithic regulator specifically designed for use in high frequency switching converters, such as those found in consumer electronics, automotive, computer, and industrial applications. It is capable of providing a regulated output voltage that is independent of input voltage, load current and temperature. The device is available in a wide variety of output voltages, ranging from 1.21V to 12V. It also has two operating ranges, normal and supplementary, for different load conditions. Additionally, the PQ1R27 features fast-start response, a high accuracy of ±0.8% line regulation and ±1.5% load regulation, and an on-chip output voltage trimming.

The PQ1R27 provides an excellent current capability of 4A continuous at 20°C. This wide range of features provide a high level of flexibility and make the PQ1R27 a perfect choice for the demanding requirements of modern applications. The device also offers a low output noise of <100μV and a low standby current of 10μA at 25°C.

Working Principle of PQ1R27

The PQ1R27 is a linear voltage regulator with a positive, noninverting output voltage. It is based on an error amplifier, an output driver, and a voltage sensing circuit. The error amplifier is responsible for comparing the reference voltage with the feedback voltage and calculating the difference. The difference is then passed to the output driver and the current is regulated according to the reference voltage. The output driver is responsible for controlling the output voltage by adjusting the current. The voltage sensing circuit monitors the output voltage and provides feedback to the error amplifier.

The PQ1R27 also features a built-in protection circuit that prevents overvoltage and overcurrent conditions. The protection circuit has a built-in adjustable current limit, as well as soft start, over temperature, and overvoltage (OVP) protection. The OVP circuit can be activated by adjusting the voltage sensing circuit, which is set at a fixed level.

In conclusion, the PQ1R27 is a linear voltage regulator designed for use in high frequency switching converters. It features a wide variety of output voltage ranges, fast start-up, a high accuracy of ±0.8% line regulation, ±1.5% load regulation, low output noise, and low standby current of 10μA at 25°C. Additionally, the device has a built-in protection circuit that prevents overvoltage and overcurrent conditions.

The specific data is subject to PDF, and the above content is for reference