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S-1167B19-I6T2G application field and working principle

PMIC - Voltage Regulators - Linear

The S-1167B19-I6T2G by Semco is a family of low-dropout linear voltage regulators, dedicated for providing power for low-power system. It provides low-dropout capability and superior power supply rejection (PSR) performance, among other features. It is an ideal choice for applications such as point-of-load (POL) power systems, embedded processors and controllers, and many other low-power systems where power consumption matters.

The S-1167B19-I6T2G is available in various voltage and power output options, with large maximum output current up to 25A. This makes it suitable to use in a variety of designs, in a wide range of current outputs. It also features protection features such as current limit, temperature protection, voltage limit as well as overvoltage protection.

Working Principle

The S-1167B19-I6T2G operates by the voltage regulator topology; using a series pass element, the input voltage is regulated regardless of the load current. It includes a current sensing system, to limit the output current automatically, as well as for adjusting the output voltage level. The protection circuitry of the S-1167B19-I6T2G provides an extra layer of safety by limiting the output voltage and current levels to the predetermined levels. It also provides over-temperature protection and overvoltage protection.

The output voltage is controlled by a voltage feedback loop, where the internal op-amp amplifies the difference between the voltage output and the reference voltage, which then drives the series pass element. The series pass element adjusts the resistance between the input and output, in order to maintain a predetermined level of output voltage. As the load on the output increases, the voltage regulator responds by increasing the series pass element resistance.

Applications

The S-1167B19-I6T2G is ideal for low-power point-of-load (POL) power systems, embedded processors and controllers, as well as a variety of other low-power system designs. It is well-suited for applications such as portable media players, ultra-thin notebooks, mobile phones, thin tablets, and more.

The S-1167B19-I6T2G is also a great choice for lower-current (under 25A) applications, such as power supply systems, DC/DC converters, PDAs and other handheld electronics, LCD monitors and displays, and many more.

Conclusion

The S-1167B19-I6T2G by Semco is an ideal solution for low-power system designs, thanks to its low-dropout capability and superior power supply rejection. Its wide range of available voltage and current outputs, as well as its advanced protection circuitry, make it suitable for many applications. Its wide range of application makes it an obvious choice for low-power applications, where power consumption is essential.

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