S-1131B36UA-N4VTFU

Current - Output:	300mA
Supplier Device Package:	SOT-89-3
Package / Case:	TO-243AA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Over Current
Control Features:	Enable
PSRR:	70dB (1kHz)
Current - Supply (Max):	65µA
Current - Quiescent (Iq):	1µA
Series:	S-1131
Voltage Dropout (Max):	0.28V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.6V
Voltage - Input (Max):	6.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Linear voltage regulators (LVRs) are commonly used in power-sensitive applications that require a precise output voltage with low noise and low dropout. The S-1131B36UA-N4VTFU is a 3.3V LVR that offers various features and benefits for a wide variety of applications. In this article, the application fields, feature set and the working principle of the S-1131B36UA-N4VTFU will be discussed.

Application Fields

The S-1131B36UA-N4VTFU is a very popular low-dropout (LDO) voltage regulator commonly used in applications where precise output voltage and low noise are required. These applications can be found in a wide variety of industries, such as consumer electronics, medical devices, automotive, industrial, computer and communications.Due to its low noise and precise output voltage, the S-1131B36UA-N4VTFU is a suitable voltage regulator for sensitive components such as sensors, data converters, memories, microprocessors and other precision devices. In addition, it is suitable for digital and analog applications that require low dropout performance, such as PCMCIA cards and other voltage-sensitive products.

Feature Set

The S-1131B36UA-N4VTFU features a low dropout voltage of just 0.3V, which can significantly reduce the power consumption of the device while still providing a precise voltage output. Its wide input voltage range of 4.5V to 30V enables the LVR to be used in a variety of applications. In addition, the device is protected against shorts and overvoltages, providing improved system protection.The S-1131B36UA-N4VTFU also has adjustable output voltage and high power supply rejection ratio (PSRR), which helps to reduce potential noise interference in the device. Furthermore, its maximum current sourcing/sinking capability is up to 1.5A and 1.6A, respectively, making it suitable for applications that require high-current consumption.

Working Principle

The S-1131B36UA-N4VTFU is an adjustable linear voltage regulator, which means that it utilizes a feedback loop to maintain a constant output voltage. The device is comprised of two main components: an internal error amplifier and a series pass transistor.When the input voltage is higher than the desired output voltage, the error amplifier produces a signal to reduce the voltage. This signal is then amplified using a transconductance stage and applied to the pass transistor, thus reducing the amount of voltage that passes through the device. Inversely, when the input voltage is lower than the desired output voltage, the error amplifier signals the pass transistor to increase the amount of voltage that passes through. This cycle continues until the output voltage is maintained at the desired level.

Conclusion

The S-1131B36UA-N4VTFU is a 3.3V LVR that offers a number of useful features, such as low dropout voltage, high current capability, adjustable output voltage and high PSRR. These features make it an appealing choice for applications that require precise output voltage and low noise. Furthermore, the device is protected against shorts and overvoltages for improved system protection. The working principle of the S-1131B36UA-N4VTFU is based on a feedback loop, through which the error amplifier and pass transistor maintain a constant output voltage.

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