PQ12RA11J00H

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PQ12RA11J00H Voltage Regulator

As a member of the voltage regulator family, PQ12RA11J00H regulators are linear and very precise. They are widely used to provide a stable, constant voltage to a variety of electronic systems, from consumer electronics to industrial-grade equipment. Voltage regulators also provide superior noise immunity and protection against overvoltage and current transients. The PQ12RA11J00H regulators excel at providing accurate voltage regulation, making them ideal for any application that requires precise control of voltage.

The PQ12RA11J00H regulators are rated for an operating temperature range from −40 °C to 125 °C (-40 F to 257 F). This wide range of operating temperature makes them suitable for a variety of applications and environments, from low temperatures in cold storage warehouses to higher temperatures in industrial applications. The PQ12RA11J00H regulator is rated for a voltage range of 4.5V to 40V, ensuring they will meet the voltage requirements of most applications.

Working Principle

The PQ12RA11J00H regulator is a linear, closed-loop device. It employs feedback to maintain the output voltage at a precise, constant level regardless of changes in line voltage, temperature, and load currents. The regulator contains an internal voltage reference that sets the output voltage, a power transistor that acts as an electronic switch, and an error amplifier that amplifies the difference between the actual output voltage and the reference voltage to drive the power transistor. Thus, when the output voltage deviates from desired output (as defined by the reference voltage), the error amplifier will drive the power transistor until the output voltage is restored to the desired magnitude.

The regulator will provide a stable voltage output even if the line voltage, load current, or temperature changes significantly. This ability to maintain the output voltage regardless of changes in input and output conditions is essential to the performance of many electronic systems. Furthermore, the excellent line regulation of the regulator (< 0.1 V at 12 V output) ensures a constant output voltage even if the input voltage changes.

Application Field

The PQ12RA11J00H has been used in a variety of applications, ranging from consumer electronics to industrial-grade equipment. Its high precision and excellent line regulation make it an ideal choice for applications that require precise control of voltage. This includes products such as audio amplifiers and medical imaging systems, which must be able to cope with power supply noise, current transients, and wide temperature ranges. The PQ12RA11J00H is also well-suited for applications where there is a need to save space, as the regulator is capable of being mounted on a single-layer PCB in a very small form factor.

The PQ12RA11J00H regulator has also proven to be popular in automotive DC-DC converters, backlighting systems, and motor speed controllers. In these applications, the regulator provides high efficiency, excellent line and load regulation, and superior thermal stability over a wide temperature range. Its low power dissipation and low cost further add to the appeal of the PQ12RA11J00H regulator for automotive applications.

Finally, the PQ12RA11J00H regulator can be used in industrial and office equipment for applications such as LED lighting systems, low-voltage monitors, and rectifiers. The precision of these regulators allows them to provide stable voltage output in environments where AC line voltage may be subject to significant fluctuations, ensuring the performance and reliability of the electronic products using them.

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