Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

PMIC - Voltage Reference

ADR4540BRZ is an integrated linear voltage regulator product from Analog Devices, Inc. It is a low-input voltage, low-dropout regulator (LDO) capable of delivering up to 600mA of continuous current at up to 1. 3V output voltage. The device is housed in a small 2mm x 2mmWDFN8 package, making it suitable for a variety of applications in small printed boards.

The ADR4540BRZ is designed to be an easy-to-use and reliable device for providing a stable and reliable power supply for a variety of applications, such as microcontrollers, memory cards, and digital signal processors. The device features an Internal Positive Temperature Coefficient (IPTC) for robust line regulation, a low quiescent current for improved efficiency, and an integrated enable control pin for additional power savings. The device is designed to withstand line voltages from 5V to 22V and offers an overload protection and current limiting protection against over-voltage, over-current, and reverse operation.

Application Field

The ADR4540BRZ is ideal for a variety of applications, including microcontroller applications, consumer electronics, automotive and industrial applications, and communications equipment. It is suitable for powering microcontrollers, memory cards, and digital signal processors, among other applications. It is also suitable for battery operated circuits, since it offers an efficient quiescent current to reduce device\'s standby power consumption.

Due to the device\'s high current capability, the ADR4540BRZ can also be used in applications where fast load transients and high current demands are expected, such as LED drivers and microcontroller supervisory circuits. It is ideal for providing a low-noise, low-dropout voltage source in server, storage and networking equipment.

Working Principle

The ADR4540BRZ uses a linear voltage regulator technology to provide a stable and linear voltage output. The device uses a single rail design concept, where the output voltage is referenced to a single voltage rail. The input voltage rail is converted into a very low-dropout linear regulator, with a maximum dropout of 1.3V.

The device integrates a band gap reference, which is used to compare the output voltage with the reference voltage, and control the output voltage. The device also integrates an IPTC, which provides line regulation capability, to ensure a stable output voltage over a range of line voltages. The integrated overload protection and current limit protects against over-voltage, over-current, and reverse operation.

The device also integrates a shutdown control pin, which can be used to turn off the device when it is not active. This feature is useful in applications where the device needs to be completely shut down when not in use, to conserve power. In addition, the device has an input pin to monitor the actual output voltage and provide feedback to the voltage reference. This feature allows to adjust the output voltage according to the load conditions and thus ensuring a stable and accurate output voltage across a wide range of conditions.

The specific data is subject to PDF, and the above content is for reference