BU1AUA3WNVX-TL

Voltage Dropout (Max):	0.7V @ 300mA
Supplier Device Package:	SSON004X1010
Package / Case:	4-UDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	70dB (1kHz)
Current - Quiescent (Iq):	90µA
Current - Output:	300mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.05V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

BU1AUA3WNVX-TL is a voltage regulator with line and load regulation features. It is a linear voltage regulator with short circuit protection that can be used in various applications. This article is intended to give an overview of the device features, its applications and working principle.

Features

The BU1AUA3WNVX-TL is a three-terminal voltage regulator that operates within a 4.5 V to 28 V input range. It delivers an adjustable output range of 1.25V to 24V with a constant voltage accuracy of 1%. The output current can be adjusted with an external resistor as low as 100 mA and up to 3 A. Its line and load regulation is 0.1% and 0.3%, respectively. Its high PSRR (Power Supply Rejection Ratio) of 60 dB allows it to operate in noisy environments while maintaining consistent voltage accuracy. It has a low-noise operation, making it suitable for low-power applications. It also has an inrush current protection of 3.2 A.

Applications

The BU1AUA3WNVX-TL can be used in a wide variety of applications. It is ideal for applications with high-noise environments, such as those found in medical and automotive systems. Its adjustable voltage output makes it suitable for power supply and battery chargers. It can be used in LED lighting, telecom base stations, as well as consumer and industrial electronic equipment.

Working Principle

The BU1AUA3WNVX-TL operates on the principle of voltage regulation. It is designed to maintain a constant output voltage with a wide input voltage range. This is enabled by its integrated error amplifier, which detects a change in the actual output voltage and adjusts the internal reference voltage to keep the output voltage constant. When the input voltage is too high, the BU1AUA3WNVX-TL draws power from the input and reduces its output voltage. However, when the input voltage is too low, the BU1AUA3WNVX-TL increases its output voltage by drawing power from the output. By constantly adjusting the output voltage, the device ensures stability and reliable operation.

Conclusion

The BU1AUA3WNVX-TL is a three terminal voltage regulator that is capable of providing reliable power voltage in high-noise environments. Its adjustable output voltage range allows it to be used in applications such as power supplies, battery charging, and LED lighting. Its built-in error amplifier allows the device to constantly adjust the output voltage and ensure the stability and reliability of the system.

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