PQ5EV5

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PMIC - Voltage Regulators - Linear - PQ5EV5 Application Field and Working Principle

Voltage regulation is a vital part of many electronic systems, and among the most popular voltage regulators are linear voltage regulators. One of the most important linear 1V voltage regulators is the PQ5EV5. This article explains the application field and working principle of PQ5EV5.

The PQ5EV5 is a 1V, 3.6-A low-dropout linear voltage regulator designed for high-efficiency, low-power applications. The PQ5EV5 has a wide range of temperatures and works with a low 19-mV dropout voltage, and features reverse-current protection and thermal shutdown protection to protect the load against short circuit or a temperature overload.

Application Field

The PQ5EV5 is suitable for use in industrial process controls, automation and control applications as well as in sensor networks, medical equipment and automotive systems. Low-dropout voltage, high efficiency, and reverse current protection make the PQ5EV5 ideal for applications with tight regulation, and its wide input voltage range provides stability even when the supply voltage varies by 10V.

Working Principle

The PQ5EV5 works on a linear regulator principle. It takes an input voltage and places a regulating element in series with the load to keep the output at a fixed voltage. The circuit includes an error amplifier to sense the output voltage and reference voltage and to adjust the current through the regulating element. This current is used to regulate the output voltage.

The PQ5EV5 features a low-dropout voltage of only 19 mV, making it one of the most efficient regulators available. This is the voltage difference between the input and output voltage at which the regulator will start to throttle the output current and cause the output voltage to fall. This low dropout voltage ensures that the output voltage remains stable even when the supply voltage changes by a large amount.

The PQ5EV5 also features reverse-current protection, which prevents current from flowing from the output to the input. This is important in many applications, as electric shocks may occur if current flows from a source of higher voltage to a source of lower voltage. It also features thermal shutdown protection, which turns off the regulator if the heat generated by the device exceeds a certain level. This protects the circuit from damage due to overheating.

The PQ5EV5 is an ideal choice for any application that requires a high-efficiency, low-dropout voltage regulator with excellent regulation, reverse-current protection, and thermal shutdown protection. Its wide input voltage range and long-term stability make it a reliable choice for any application.

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