MC79L12ABD

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MC79L12ABD is a popular, industry standard voltage regulator from ON Semiconductor. It uses a linear voltage regulating system, providing a fairly stable output voltage even though the input voltage changes.

The MC79L12ABD is widely used in many applications. It can be found in AC/DC power supplies, appliances, electronic musical instruments, LED lighting systems, and many other electronic products. It is an ideal choice for most industrial and automotive environments.

MC79L12ABD is a three-terminal voltage regulator that includes protection against overvoltage and reverse polarity. The regulator consists of an internal controllable current source, an adjustable voltage reference, an output transistor, and other associated circuitry. The regulator provides up to 2A output current, up to 15V output voltage, and up to 36V input voltage.

The output voltage of MC79L12ABD is determined by the combination of R1 and R2, which adjusts the voltage reference. When R1 is adjusted to a lower resistance, the output voltage increases. The current limit of the regulator can be fixed through the R3. The higher the resistance, the higher the current limit.

When the input voltage of the regulator falls below the predetermined level, the internal current source will switch off, thus preventing an overload. However, if the input voltage exceeds the predetermined limit, the input current will be limited. At the same time, the integrated over-current protection will activate and switch off the regulator’s output.

MC79L12ABD is a popular and reliable choice for voltage regulators. It is easy to configure, and its over-voltage protection circuit provides enhanced safety to the system. It also has a wide range of input voltages, making it suitable for any environment. Finally, it offers a good combination of low cost and high efficiency.

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