PQ1X281M2ZPH

Introduction

The PQ1X281M2ZPH is a Linear Voltage Regulator from PMIC (Power Management ICs). It is a three-terminal adjustable regulator with a wide input voltage range from 4V to 22V, a fixed output voltage of 5.0V, and a typical output current of 1.5A. The PQ1X281M2ZPH has a low dropout performance due to its low output voltage range, giving it a low quiescent current, and offers excellent stability, transient response and low total harmonic distortion. It is ideal for applications requiring high current levels and low noise, such as automotive and industrial starting and charging systems.

Applications

The PQ1X281M2ZPH is primarily designed to be used in automotive, industrial, medical and telecom applications. It can be used in various systems applications, such as electric vehicle charging systems, motor control systems, LED lighting systems, and audio/video equipment. Furthermore, it can also be used in other applications such as high efficiency buck voltage regulators, power supplies, and DC-DC converters.

Features and Benefits

• Wide input voltage range from 4V to 22V
• Low dropout performance
• Excellent stability, transient response and low total harmonic distortion
• Internal high voltage current limit
• Low quiescent current

Working Principle

The PQ1X281M2ZPH follows a simple negative-to-positive biasing circuit. It has three main terminals: the input voltage pin on the left, the output voltage pin on the right, and the ground pin in the middle. The PQ1X281M2ZPH works on the principle of negative feedback, whereby the output voltage is regulated by comparing the output voltage to a reference voltage. The difference between the two is the error amplifier (EA) output voltage, which is amplified by the error amplifier and sent back to the input pin. This then causes the output pin to adjust itself according to the input signal.The PQ1X281M2ZPH also has an internal current limit protection circuit which helps prevent the device from being over-stressed in the event of an output overload. The device also features thermal shutdown protection, which prevents the device from being damaged if the temperature exceeds a certain threshold.The PQ1X281M2ZPH has a maximum output current of 1.5A and a low dropout voltage of 4V. It can also be used in a wide range of temperature operating ranges from -40°C to 125°C, making it suitable for a variety of applications.

Conclusion

In conclusion, the PQ1X281M2ZPH is a three-terminal adjustable linear voltage regulator designed for use in automotive, industrial, medical and telecom applications. It offers a wide input voltage range, excellent stability, transient response, and low total harmonic distortion. It also features an internal current limit protection and thermal shutdown protection, making it ideal for high current levels and low noise applications.