BD3985FV-E2

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

The BD3985FV-E2 is a linear voltage regulator and part of a family of low dropout (LDO) voltage regulators. These regulators can output a steady voltage, despite input voltage and current fluctuations, and come in various packages with different functions. In this article, we will discuss the application field and working principle of the BD3985FV-E2.

Application Field

The BD3985FV-E2 is designed for consumer electronics, automotive and industrial applications, such as voltage regulators for power supplies in general consumer electronics, battery-powered devices, automotive devices, and high-sensitivity instruments. It is advised that the BD3985FV-E2 is mounted on a heat sink when the output current is greater than 300mA.

The BD3985FV-E2 is also suitable for applications with strict voltage requirements, such as portable devices, small RF amplifiers, LED lighting, etc. The low power consumption, high operating current, and improved ESD performance of the BD3985FV-E2 make it a reliable and versatile solution for many design problems.

Working Principle

The BD3985FV-E2 is a low Dropout (LDO) linear voltage regulator that can keep output voltage under 0.5V, even though when voltage drops down to 2.0V. Simply put, it works by comparing the voltage at the output terminal with a reference voltage and then making adjustments accordingly to maintain the output voltage steady.

The BD3985FV-E2 works on the principle of negative feedback. The input voltages passes through the pass element, a P-channel MOSFET, which is controlled by the error amplifier. The output voltage of the error amplifier is then compared with the reference voltage, and the difference between them is used to control the pass element. This keeps the output voltage steady by compensating for any changes in the input voltage.

The BD3985FV-E2 also features a low quiescent current, high operating current, and improved ESD performance. The low quiescent current ensures that the device consumes less power when not in use, making it suitable for battery-powered applications. The high operating current allows it to handle high current loads, making it a reliable solution for various design problems. Finally, the improved ESD performance makes the device more resistant to electrostatic discharge, providing better protection for sensitive components.

The BD3985FV-E2 is a versatile and reliable linear voltage regulator, offering excellent performance in many applications. It is designed with a low dropout voltage regulation, providing a steady output voltage even when the input voltage fluctuates. Moreover, its low quiescent current, high operating current and improved ESD performance make it an ideal choice for many design problems.

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