PQ7RV4

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The linear regulator is one of the most commonly used device for regulating the voltage in system applications. The PQ7RV4 voltage regulator has been developed by NXP Semiconductor specifically for increased performance and efficiency in automotive, industrial and consumer applications. This article will focus on the application field and working principle of PQ7RV4 voltage regulator.

The PQ7RV4 is designed with a low dropout (LDO) operation and is ideal for automotive, industrial and consumer applications. It operates with a wide input voltage range of 4.5V to 26V and has a fixed output voltage of 5.0V. It also comes with integrated current limit and thermal shutdown functions and offers protection against reverse polarity, over-current and transient faults. The current limit of the PQ7RV4 is set through an external resistor from 1mA to 7.8A. The thermal shutdown feature is also adjustable via an internal resistor.

The PQ7RV4 can be used in a variety of applications, including automotive interior lighting systems, motor control, communications, and industrial control. In automotive interior lighting systems, PQ7RV4 provides a low-cost solution for regulating the voltage for dimming of LEDs and cold cathode fluorescent lamps. For motor control, the PQ7RV4 can provide the necessary voltage for powering upenters and electric motors. In communications systems, the PQ7RV4 voltage regulator can provide the necessary voltage for powering up phone jacks and networks. Lastly, in industrial control applications, the PQ7RV4 can be used to power up sensors and logic circuits.

In order to understand the working principle of the PQ7RV4 voltage regulator, it is important to understand the concept of Linear Regulators. Linear regulators are voltage regulators that operate by controlling the output voltage of the system to a given level. There are two common types of linear regulators, Negative Voltage Regulators (NVRs) and Positive Voltage Regulators (PVRs). The PQ7RV4 is a positive voltage regulator and operates by using an adjustable feedback loop to regulate the output voltage. The adjustable feedback loop is provided by an external voltage divided and a voltage reference, typically a zener diode, which divide the input and output voltages. The output of the adjustable feedback loop is fed back to a non-inverting input terminal of the regulator. Depending on the voltage at the non-inverting input terminal, the regulator can regulate the current in order to increase or decrease the output voltage. The PQ7RV4 also uses an internal voltage error amplifier, which is used to compare the divided output with the reference voltage to control the current and to maintain the output voltage at a predetermined level.

The PQ7RV4 voltage regulator is a highly efficient and reliable device that provides a stable voltage output with low noise levels and low dropout voltage. It is designed for optimal efficiency and performance and is ideal for automotive, industrial and consumer applications. Its low dropout operation with a wide input voltage range makes it suitable for a variety of applications and its adjustable voltage protection functions make it an ideal choice for system protection.

In conclusion, the PQ7RV4 voltage regulator is a very reliable and efficient device for regulating the voltage in system applications. Its wide input voltage range of 4.5V to 26V and low dropout operation are ideal for automotive, industrial, and consumer applications. In addition, its adjustable current limit and thermal shutdown functions make it suitable for a variety of systems and applications. The PQ7RV4 voltage regulator is a versatile, reliable and efficient solution for voltage regulation.

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