PQ12RD1BJ00H

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Introduction

PMIC Voltage Regulators - Linear are a family of integrated circuits used to regulate and control the voltage applied to an electrical system. The PQ12RD1BJ00H is a particular model that is highly efficient, featuring low quiescent current, low noise, and low dropout. It is suitable for a variety of applications including those that require precision voltage control and low power consumption. This article will explore the application field and working principle of the PQ12RD1BJ00H.

Overview of the PQ12RD1BJ00H

The PQ12RD1BJ00H is a low-voltage linear regulator from the PMIC - Voltage Regulators - Linear family. It is capable of providing a regulated output voltage of 0.8V to 3.6V with a total power dissipation of up to 1W. It is designed with a maximum drain-to-source resistance of 30A, along with a minimum input voltage of 2.4V and a maximum input voltage of 4.5V. Additionally, it has wide input voltage tolerance and can regulate an input voltage greater than its rated output voltage. It also features a quiescent current of less than 8mA and an operating junction temperature of -40°C to +125°C.

Application Field of the PQ12RD1BJ00H

Due to its low quiescent current, low noise and low dropout features, the PQ12RD1BJ00H is an ideal choice for a wide range of applications requiring precision voltage control and low power consumption. Its applications include a variety of consumer and industrial devices, such as digital TVs, set top boxes, industrial handheld equipment, and portable power tools. It is also suitable for automotive applications, including engine control units, climate control systems, and audio systems.

Working Principle of the PQ12RD1BJ00H

At the heart of the PQ12RD1BJ00H is a linear feedback system, which works by controlling the voltage applied to the output, based on the difference between the regulated voltage and the reference voltage. When the two become equal, the regulator automatically reduces the output, thereby maintaining a constant regulated output.

The PQ12RD1BJ00H utilizes a series of internal transistors and resistors to regulate the output voltage. The output voltage is determined by the voltage divider relationship between these components, as well as the feedback loop. The voltage divider is used to divide the input voltage, while the feedback loop is used to compare the output voltage to the reference voltage and adjust the output accordingly.

The linear regulator also features a high input/output common mode rejection ratio (CMRR). This CMRR helps to reduce and reject the unwanted common-mode noise signals in the environment, ensuring clean and accurate output. Additionally, the device features low ground current and low switching noise, further improving its accuracy and performance.

Conclusion

The PQ12RD1BJ00H is a highly efficient low-voltage linear regulator from the PMIC - Voltage Regulators - Linear family. It is suitable for a variety of consumer and industrial applications, including digital TVs, set top boxes, industrial handheld equipment, and portable power tools. At its core is a linear feedback system, which works to regulate the output voltage by adjusting the internal transistors and resistors. Additionally, it features a high CMRR and low ground current, further improving its accuracy and performance.

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