S-13R1F37-A4T2U3

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Voltage regulators are electronic components responsible for providing a constant regulated output voltage, regardless of the applied input. Linear voltage regulators are a type of voltage regulator that use a series voltage regulator circuit to convert an unregulated input voltage into a constant output voltage. This article examines the application field and working principle of the S-13R1F37-A4T2U3 linear voltage regulator.

Application Field

The S-13R1F37-A4T2U3 linear voltage regulator is part of the S-13 line of PMIC voltage regulators from Triada Corporation, and is designed for use in commercial and industrial applications, embedded systems, and consumer products. It is particularly well-suited for use in high-current, high-accuracy regulation systems. It is a monolithic integrated circuit having a minimum on-resistance of 37 mΩ and a wide input voltage range of 0.8 to 36V. The device is able to provide a highly accurate output voltage across a wide temperature range and is capable of supplying up to 1.3A of continuous current. The S-13R1F37-A4T2U3 is mounted in a small, 4-pin SOT23 Package and is designed for easy integration and swift assembly.

Working Principle

The S-13R1F37-A4T2U3 linear voltage regulator works in accordance with the classic three-terminal linear voltage regulator circuit. This circuit consists of three main components: the input voltage source, the load, and the regulator itself. The voltage regulator acts as an amplifier, receiving the input voltage and amplifying it to the required output voltage. The input voltage is applied across the two input terminals of the voltage regulator, the ground and the supply (Vin). The output voltage is connected across the two output terminals, the ground and the load (Vout). The output voltage is governed by a variable reference voltage, which is applied across the third terminal of the voltage regulator, the adjust (Vadj).

The amp between the input and output terminals of the regulator is a differential amplifier, where the input terminals are the non-inverting (Vin) and inverting (Vout) inputs, and the output is the amplified output (Vadj). The differential amplifier takes the difference between the input voltages and amplifies it according to the amplification factor of the regulator. The output voltage of the regulator is determined by the reference voltage applied across the adjust terminal, which is usually determined by a series of resistors connected between the regulator and ground. By controlling the reference voltage, the output voltage can be accurately regulated, regardless of fluctuations in the input voltage.

In addition to providing a regulated output voltage, the S-13R1F37-A4T2U3 linear voltage regulator also includes additional functions and protection features. These include thermal protection, reverse protection, and over-voltage protection. The thermal protection feature prevents the device from overheating, while the reverse protection feature prevents reverse current flow, and the over-voltage protection feature limits the output voltage when the regulator is overloaded.

In summary, the S-13R1F37-A4T2U3 linear voltage regulator is a reliable, highly efficient option for use in commercial and industrial applications, embedded systems, and consumer products. Its monolithic construction and wide input voltage range make it ideal for high-current, high-accuracy regulation systems. The device offers excellent protection features, including thermal protection, reverse protection, and over-voltage protection. Ultimately, the S-13R1F37-A4T2U3 linear voltage regulator provides an excellent solution for accurate, stable voltage regulation in a variety of applications.

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