BU18UB3WG-TR Integrated Circuits (ICs)

Voltage Dropout (Max):	0.32V @ 300mA
Supplier Device Package:	5-SSOP
Package / Case:	SC-74A, SOT-753
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:	360mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
Voltage - Input (Max):	3.6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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Introduction
BU18UB3WG-TR, a voltage regulator from Sanken Electric, is a linear voltage regulator with a wide temperature range of -40 to +125°C. It can be used in a variety of applications and is one of the most widely used voltage regulators in the industry today.Application
BU18UB3WG-TR is used for different applications, such as digital TV, LCD monitors, notebook power supply, automotive systems, USB power supply, and other digital products. It provides stable output voltage with low dropout voltage and low output noise level.The regulator has an input voltage range of 4.5V to 16V and output voltage range of 1.5V to 5.5V. The adjustment voltage also ranges from 0V to 7.75V. The maximum output current is 5A and the total power dissipation is up to 33W.Working Principle
The BU18UB3WG-TR voltage regulator is a linear regulator that uses a zener-diode reference and a pass transistor active element. The input voltage is applied to the non-inverting input of the voltage source amplifier, which is connected to the resistor divider divider. The divider produces a reference voltage at the regulated output of the regulator.The output voltage is regulated based on the feedback control - the output voltage is set by the voltage divider and the voltage divider provides the point of regulation. The reference voltage is compared to the output voltage and the non-inverting input is controlled by the error amplifier in order to maintain the desired output voltage.The BU18UB3WG-TR voltage regulator also includes several protection functions. It provides over-current protection, soft-start function, thermal shutdown protection and over-voltage and under-voltage protection.Conclusion
BU18UB3WG-TR is a versatile voltage regulator that can be used in a variety of applications. It provides stable output voltage with low dropout voltage and low output noise level. The regulator has an input voltage range of 4.5V to 16V and output voltage range of 1.5V to 5.5V, and is able to handle up to a total power dissipation of 33W. It also has several protection functions, including over-current protection, soft-start function, thermal shutdown protection and over-voltage and under-voltage protection. Its wide temperature range of -40 to +125°C makes it suitable for various applications.

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