PQ1U311M2ZPH

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A PQ1U311M2ZPH is a three-terminal, low quiescent current linear voltage regulator IC, making it an ideal choice for use in a variety of applications. It is classified as one of many linear voltage regulators, typically located within the power management IC (PMIC).

First, let’s consider the application field of the PQ1U311M2ZPH. Typical applications include providing adjustable, stable and low quiescent current supplies for low-power audio and handset systems. The technical characteristics of this component make this voltage regulator ideal for battery powered systems, or any other application that requires low voltage and low consumption. This component provides a good balance of performance and cost-efficiency, making it an attractive choice for a wide range of applications.

Now we can consider the working principle of the PQ1U311M2ZPH. This component is extremely simple to use as within it is a voltage comparator which compares the reference voltage, a voltage divider and a bandgap setting element. When the reference voltage and voltage output compare, the error amplifier changes the output stage transistor current to match the reference, making it very simple to regulate. The output current from the voltage divider will be increased if the output voltage drops and decreased if the output voltage rises. This keeps the output voltage of the bandgap setting element constant and stable, enabling the PQ1U311M2ZPH to ensure the voltage stability.

The PQ1U311M2ZPH is an adjustable linear voltage regulator that can provide a low quiescent current and a full range of output voltage (1.8 V to 5.5 V). It has an ultra-low operating current (typical 0.7 mA with 3 V I/O) which makes it an ideal choice for a wide variety of applications, including low power audio and handset systems. Its integrated power switch provides overload protection and it has a wide range of input voltage (2 V to 6.3 V). Thanks to its low quiescent current, it allows for low battery current drain, making it a cost-efficient, reliable and robust component for battery-powered systems.

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