S-1172B28-U5T1G

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PMIC - Voltage Regulators - Linear are one of the most important components in modern electronic systems due to their ability to accurately regulate power. The S-1172B28-U5T1G is a high performance linear regulator chip with an ultra-low dropout voltage and output current capability of up to 8 A. It is well-suited to a wide range of applications where tight regulation is required.

Application Field

The S-1172B28-U5T1G can be used as a single-supply voltage regulator with an input voltage range of 2.5V to 28V and an adjustable output voltage in a range of 1V to 28V. Such a wide range of input and output voltages makes it well-suited for a variety of applications, including point-of-load converters, automotive systems, telecommunications, and handheld devices. Its low dropout voltage and high current capabilities make it suitable for use in high-current, low-voltage applications. This makes the S-1172B28-U5T1G ideal for applications where tight regulation of power supply is necessary, such as in an automotive environment where voltage spikes can cause problems. It is also suitable for low-noise applications, as it is capable of providing a clean, low-noise output.

Working Principle

The S-1172B28-U5T1G is a monolithic integrated circuit (IC) that consists of a low dropout linear regulator, an overlay P-channel power MOSFET, a voltage reference, and some other components. The input voltage is applied to the input pins of the device, which is then converted to the required output voltage through the linear regulator. The output of the regulator is then coupled to the output pins of the device. The voltage reference provides the reference voltage which is compared with the output voltage to achieve the desired output voltage. The P-channel MOSFET is used to provide the transition between the low dropout linear regulator and the output pins of the device. The device also contains some other components such as resistors, capacitors, and diodes which are used to protect the device from excessive current and voltage spikes.

The S-1172B28-U5T1G is capable of providing up to 8 A of output current with an output voltage ranging from 1 V to 28 V.The device also offers an excellent power supply rejection ratio (PSRR) which allows the regulator to maintain tight regulation of the output voltage even when the input voltage varies. Additionally, the device features efficient thermal management which prevents damage due to overheating and provides enhanced protection to ensure device reliability.

Conclusion

The S-1172B28-U5T1G is a high performance linear regulator chip with an ultra-low dropout voltage and output current capability of up to 8A. Its wide range of input and output voltages, low dropout voltage, and high current capabilities make it well-suited for a variety of applications, such as point-of-load converters, automotive systems, telecommunications, and handheld devices. Its excellent power supply rejection ratio allows it to maintain tight regulation of the output voltage even when the input voltage varies significantly. Additionally, the S-1172B28-U5T1G features efficient thermal management which provides enhanced protection to ensure device reliability.

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