REG1117A-1.8

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Linear voltage regulators are often found in different applications, especially in industrial settings where accuracy, low noise and tight tolerances are of paramount importance. As one example, the REG1117A-1.8 is designed to provide accurate voltage regulation in a variety of different applications from telecommunications to automotive systems.

What is a REG1117A-1.8? It is an 8-pin voltage regulator capable of providing an adjustable output voltage range of 1.8 V to 5.5 V. It is designed for use with a wide input voltage range of 3 V to 20 V. It has an output current of up to 2.5 A and an internal dropout voltage of just 0.2 V. It is suitable for use with a wide range of circuits, from low noise audio amplifiers to high speed data converters. It also has excellent thermal performance.

REG1117A-1.8’s main application field is providing linear voltage regulation for a wide variety of applications. The device offers several key advantages. First, it is capable of providing low-noise regulation with a very low dropout voltage, making it ideal for use in sensitive circuits that require a highly accurate output voltage. Second, it has an excellent thermal performance, allowing it to maintain its output voltage even when exposed to high temperatures. Finally, its low input voltage range allows it to be used in circuits that operate from a single Li-Ion or Ni-MH battery.

The device\'s working principle is straightforward – it works by regulating the input voltage to maintain a constant output voltage. The regulator circuit incorporates a power Darlington transistor which acts as a current amplifier. When the regulated voltage falls below the set voltage, the transistor turns on and draws current from the input power supply, increasing the output voltage until it reaches the set point. The regulator is designed to prevent output voltage from exceeding the set point even when exposed to large input voltage swings. To limit input current and protect the device from over-current damage, it also includes an over-current protection circuit.

The REG1117A-1.8 is a versatile voltage regulator capable of providing accurate voltage regulation in a variety of applications. It offers low-noise operation and an excellent thermal performance, making it an ideal choice for sensitive circuits needing a highly accurate output voltage. Its low input voltage range makes it suitable for use in single-cell battery powered systems. As this device is widely used across a variety of industries, it clearly has the potential to be used in many more applications.

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