PQ1U401M2ZPH

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The PQ1U401M2ZPH voltage regulator, belonging to the linear regulator family, is a type of power management integrated circuit (PMIC) with superior on-chip control and protection features. This voltage regulator features a wide input voltage range from 4.5 V to 25 V, an operating temperature range from –40 ºC to +85 ºC and an output current of 1 A with a typical dropout voltage of 0.29 V. It has an enable enable capability for low battery/power supply voltage applications and an amplitude current limit feature for circuit protection.

The PQ1U401M2ZPH regulator uses a linear regulator control circuit. Linear regulator control circuits are composed of an error amplifier, a voltage reference and a pass device. The control loop maintains a constant output voltage, regardless of input and output voltage fluctuations, load changes and temperature variations. The error amplifier compares the output voltage to a reference and, depending on the resulting difference, either increases or decreases the pass device’s duty cycle. The result is a constant output voltage.

The PQ1U401M2ZPH voltage regulator is designed for a variety of applications, including telecommunications, battery-powered systems, handheld instrumentation, medical devices, computing and peripherals, industrial control, and portable instrumentation. It finds itself useful in any system that requires a stable and accurate output voltage for power management purposes. Such applications include active power factor correction (PFC) power supplies, DC/DC converters, chargers, high-efficiency voltage regulators, and low noise linear regulators.

An additional feature of the PQ1U401M2ZPH voltage regulator is its low quiescent current draw, which is equivalent to a 0.625 mA/V load regulation accuracy. This low quiescent current draw results in high power efficiency, as there will be no significant losses due to the current passing through the regulator. The regulator also has a wide operating temperature range, which allows it to be used in a variety of operating conditions. It also has protections against voltage overshoot, over-voltage, over-current, and reverse battery.

A further asset of the PQ1U401M2ZPH voltage regulator is its adaptability, as it’s capable of supporting adjustable output voltages from 0.8 V to 13 V. By combining the enables, voltage references and error amplifiers, the PQ1U401M2ZPH provides designers with the flexibility to adjust their power supplies to a variety of conditions. Furthermore, the regulator has a very low offset voltage and excellent power handling ability, making it suitable for a variety of power supply designs.

In addition to the benefits already discussed, the PQ1U401M2ZPH voltage regulator also features a self-start mode and a soft-start mode. During the self-start mode, the regulator automatically detects the output voltage and adjusts the output to a predetermined value. This makes the regulator suitable for powering components and circuits that require immediate operation when powered on. The soft-start mode is designed to reduce in-rush current and provide a smooth start to the system by ramping up the output voltage. The limitation for the soft-start maximum voltage is programmable.

In conclusion, PQ1U401M2ZPH voltage regulator is a highly efficient and reliable PMIC from the linear regulator family. It features a wide input voltage range, adjustable output voltage, enable enable capability for low battery/power supply applications, low quiescent current draw, wide operating temperature range and self-start/soft-start modes. The PQ1U401M2ZPH voltage regulator is suitable for applications such as active power factor correction power supplies, DC/DC converters, chargers, high-efficiency voltage regulators, and low noise linear regulators.

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