S-1172B44-U5T1G

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S-1172B44-U5T1G is a low-dropout regulator (LDO) used in a variety of low-power and low-voltage applications. It is designed to provide a regulated output voltage of up to 4.5V with an adjustable current up to 44mA. It features an ultra-low-noise output and low standby current suitable for device-level system power management. Furthermore, it can be used in a wide range of products such as microprocessors, memory chips, audio codecs, and even as a stand-alone voltage regulator.

Overview

The S-1172B44-U5T1G is a three-terminal, low-dropout regulator (LDO) that is designed for providing a fixed output voltage from a minimum of 2.5 V to a maximum of 4.5 V. The device can support input voltage up to 6.2V, making it suitable for a variety of applications. The device has an adjustable output current of up to 44mA and low standby current of only 280nA. Furthermore, it features a wide drop-out voltage of only 0.19V. In addition, the device is designed with ultra-low-noise operation with a maximum output ripple of 500ppm rms. The output error of the device is low and can adjust to a maximum of 2%.

Applications

The S-1172B44-U5T1G is ideal for providing regulated power in battery-powered or low-power applications. It is suitable for use in any point-of-load applications that require an ultra-low-noise, low-dropout regulator solution. These applications include powering microprocessors, memory chips, audio codecs, and other electronic components that require a low-voltage, low-current supply. The device can also be used in stand-alone applications in which the device acts as a linear regulator, replacing a more traditional regulator solution.

Working Principle

The S-1172B44-U5T1G is a linear regulator, meaning it works by converting excess voltage into heat. The device works by creating a voltage differential between its input voltage and output voltage. This voltage differential, also known as the drop-out voltage, works by creating a “Reverse Conducting Diode”. This enables the device to regulate or reduce input voltage to an optimal output voltage, depending on the required current capability. The device also uses two transistors to control the current, ensuring that the current capacity is regulated in proportion to the voltage level.

Conclusion

In conclusion, the S-1172B44-U5T1G is an excellent low-dropout regulator for applications requiring low noise and low-power. The device’s adjustable current process ensures a stable output regardless of input voltage and the ultra-low noise output makes it suitable for even the most noise-sensitive applications. Furthermore, its low drop-out voltage and low standby current also result in increased power efficiency.

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