PQ150VB02FZH

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PQ150VB02FZH belongs to PMIC (Power Management Integrated Circuit) – Voltage Regulators – Linear, which is designed to maintain a constant nominal output voltage even when the load current and the input voltage fluctuation. The device does this by regulating the current input voltage via a reference voltage applied to the output (Vref). As the load current varies, or as the input voltage drops/rises, the output voltage also modulates, to adjust accordingly. This thus eliminates the requirement of an external voltage regulator.

The PQ150VB02FZH is a low-dropout (LDO) 2A linear voltage regulator, with an output voltage of 150V. It has a wide input voltage range of 3V to 20V, offering stable output voltage even in the event of minor fluctuations in the input. The output voltage is maintained within ±1 percent accuracy and very fast load transient response of 10µs.

The device has a very low ground current of 15µA, which helps to improve the power efficiency as well as prolonging battery life in portable equipment. Furthermore, it has an open-drain enable pin, with 0.2V low voltage cutoff, which helps to reduce unnecessary battery consumption due to its ability to shut off the LDO when not in use.

The PQ150VB02FZH is ideal for applications such as providing a rails for fast transient load and telecom power supplies. It provides a stable supply of power even when there is a varying input voltage and load current, making it suitable for use in systems that require precise noise-free low voltage outputs. Furthermore, it is also suitable for applications that require high power, such as power converters.

In terms of working principle, the PQ150VB02FZH follows a conventional linear regulator architecture, wherein the input voltage is regulated using a reference voltage (Vref) applied to the output. This is done by using a combination of a series pass transistor and a differential error amplifier. When the load current fluctuates, or when the input voltage rises/drops, the voltage control of the series pass transistor sensing the difference between the output voltage and the reference voltage, and adjusts accordingly. This adjusts the output voltage to maintain it within precise tolerances, as set by the reference voltage.

Overall, the PQ150VB02FZH is a high-performance linear voltage regulator, which provides a precise noise-free output simply from the combination of series pass transistor and an error amplifier. Its wide input voltage range and low ground current make it ideal for any system requiring precise voltage regulation, even under varying load and input voltages.

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