SCV4264VST50T3G

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Voltage regulators are an important component in many electronics. Regulated voltage helps to ensure that the appliance operates within its design specs, maximizing performance and increasing its lifespan. The SCV4264VST50T3G is a step-down linear voltage regulator from STMicroelectronics, designed for a variety of high-performance applications. In this article, we will discuss the application field of this product and its working principle.

Application Field

The SCV4264VST50T3G is a compact, low-power linear voltage regulator capable of delivering up to 2.5A of output current. It is rated to operate over an input voltage range of 8V to 40V. This makes it ideal for a diverse range of applications, including motor drives, LED lighting, telecommunications, and industrial automation. It can also be used in automotive, commercial and industrial systems, such as computers, telematic systems, and home automation.

The SCV4264VST50T3G is characterized by great efficiency and excellent line and load regulation, making it suitable for high-performance and demanding applications. Additionally, its low quiescent current ensures minimum power dissipation, allowing for greater energy savings. Its tight load and line regulation, combined with its over-temperature and short-circuit protection, guarantee a reliable output voltage under all operating conditions.

Working Principle

The SCV4264VST50T3G operates based on the conventional linear voltage regulator topology. It consists of three main components: an error amplifier, a pass transistor, and a control circuit. The error amplifier is an operational amplifier whose output voltage is a function of the difference between its input voltage and a fixed reference voltage. This difference voltage is used to control the pass transistor, which regulates the output voltage.

When the output voltage drops below the reference voltage, the error amplifier increases the pass transistor\'s base current, reducing the resistor\'s resistance and allowing more current through to the output, thus raising the output voltage. Conversely, if the output voltage rises above the reference voltage, the error amplifier reduces the pass transistor\'s base current, increasing the resistor\'s resistance and reducing the current to the output, thus lowering the output voltage.

The SCV4264VST50T3G has a further level of protection, in the form of temperature sensing. Built-into the device is an overtemperature protection circuit, which shuts off the pass transistor when the device temperature exceeds a certain limit. This ensures that the device does not overheat, thus prolonging its lifespan.

Conclusion

The SCV4264VST50T3G is an advanced, low-power linear voltage regulator from STMicroelectronics, designed for a variety of high-performance applications. Its rated operating range of 8V to 40V, tight load and line regulation, low quiescent current, and over-temperature and short-circuit protection make it the ideal choice for a variety of applications. Its conventional linear regulator topology, comprising an error amplifier, pass transistor, and control circuit, makes it a reliable and easy to use device.

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