PQ1N333MASPQ

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The PQ1N333MASPQ is a linear voltage regulator that belongs to the family of PMIC (Power Management Integrated Circuit) voltage regulators. It is a high voltage device that is mainly used for applications requiring a noise quiet supply, such as DVM and UART power sources. This device can also be used for general voltage regulation.

The range of input voltage for the PQ1N333MASPQ is from 10 to 30V, while the output voltage range is from 0.8 to 20V. This device is available in a standard SOT-223 package, and features a dropout voltage of 0.25V, a maximum load current of 1A, and a power dissipation of 2W.

The PQ1N333MASPQ has several features that make it ideal for various applications. For starters, it has a built-in temperature sensing circuit that prevents over-temperature shutdown. This circuit can also activate the thermal protection function to protect the device from excessive heat. Additionally, this device has on-chip reverse battery protection which helps to protect the circuit from short circuits and over-voltage when there is a reverse connection.

When it comes to the working principle of the PQ1N333MASPQ, it can be summarized as follows. The device consists of an error amplifier, a voltage reference, and a pass transistor. The error amplifier compares the input voltage and the output voltage, and produces an error voltage. The voltage reference is used to ensure that the reference voltage is kept at a constant level, while the pass transistor is used to regulate the output voltage. As the input voltage is varied, the pass transistor adjusts the flow of current through the output, hence regulating the output voltage.

The PQ1N333MASPQ is a versatile voltage regulator that is suitable for various applications. It is a high voltage regulator that can operate in temperatures as low as -40 degrees, making it ideal for harsh conditions. In addition, it does not require an external heat sink, and its low dropout voltage makes it suitable for higher load currents. Furthermore, it offers an on-chip thermal protection feature that helps the chip to remain cool and functioning optimally. As such, this device is an ideal choice for applications that require a noise quiet supply, such as DVM and UART power sources.

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