S-13A1A26-A6T1U3

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S-13A1A26-A6T1U3 is an advanced three-terminal linear voltage regulator developed by STMicroelectronics for general purpose applications. Featuring low dropout, fast transient response, high efficiency and cost effective designs, S-13A1A26-A6T1U3 offers a complete solution for advanced linear voltage regulation.

In general, the S-13A1A26-A6T1U3 can be used as a drop-in replacement for any other three-terminal linear voltage regulator, when working within its specified ratings. Typical applications can be found in devices such as computers and other portable electronics, telecommunication systems, automotive and industrial equipment.

The S-13A1A26-A6T1U3 voltage regulator features an adjustable output voltage range (between 1.8 to 5.0V) with a lower drop-out voltage and higher efficiency compared to other linear regulators. It is designed for applications that require large currents with high transient requirements, thanks to its fast transient response and low output noise. The device is protected from short-circuit and/or over-temperature conditions.

At the heart of the S-13A1A26-A6T1U3 is an advanced linear regulator circuit which is designed to reduce power consumption and improve the efficiency. It comprises of an error amplifier, a low drop-out voltage regulator and a temperature control circuit.

The error amplifier is responsible for the regulation of the output voltage and monitors the output voltage through an external feedback circuit. It compares the output voltage with the set voltage and adjusts its output current to maintain the output voltage. It also amplifies the small differential input voltage to a large output current which is then sent to the low drop-out voltage regulator.

The low drop-out voltage regulator is a high efficiency, low drop-out linear regulator that is responsible for the conversion of input voltage to output voltage. It is composed of a PNP transistor and an operational amplifier. The operational amplifier is responsible for the regulation of output voltage and is also responsible for providing high current drive capability.

The temperature control circuit is composed of a diode, a NPN transistor and two resistors. The diode and resistors generate a temperature dependent voltage which is then used by the NPN transistor to control the current to the output device.

The S-13A1A26-A6T1U3 voltage regulators are designed to provide cost-effective, highly efficient and reliable voltage regulation. They offer improved performance compared to other linear voltage regulators, with better transient response and lower output noise. The regulator also features a protection circuitry to protect the device against over-temperature and/or short-circuit conditions, making it suitable for a wide range of applications.

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