MC79L15ABDR2

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The MC79L15ABDR2 is a low dropout regulator in the regulated three-terminal linear series. A three-terminal linear regulator is not as efficient as a switching voltage regulator; however, it provides a low noise and low cost solution for many applications. It is designed to provide an output voltage of 1.5V with an input voltage range of 4.5V to 15V. It features a built-in current limit, protection from overtemperature, and protection from reverse-battery operation. The MC79L15ABDR2 is a monolithic integrated voltage regulator that is used to reduce the output voltage of unregulated line or battery power to the desired regulated output voltage.

The MC79L15ABDR2 has a typical dropout voltage of 1.2V and has a maximum power dissipation of 1.8W. It has an operating temperature range of -40°C to 125°C, and can be acquired in the TO-220 package or the SO-8 plastic surface-mount package. It is ideal for use in applications where low dropout voltage and good ripple rejection are desired, such as for digital systems, load switch/controller applications, and power supply modules.

The working principle of the MC79L15ABDR2 is relatively straightforward. It takes the unregulated voltage from an outside source, such as a battery or wall socket, and then uses a feedback loop to make sure the output voltage is regulated to the exact value that it is set to. This is done using an error amplifier set up to compare the voltage on its reference pin with the voltage on the output pin. If the voltage on the output pin is lower than that on the reference pin, the error amplifier signals for the pass transistor to increase its conduction, thus allowing more current to flow to the output pin. This will raise the voltage on the output pin until it matches that of the reference pin.

In addition, the MC79L15ABDR2 also incorporates other features that help improve its performance. For example, it also has an adjustable current limit circuit that limits the maximum amount of current that can be supplied to the load. This helps to protect the regulator from being damaged in the event of a short circuit. It also has a thermal shutdown circuit built into the device that prevents it from overheating during excessive operation. Lastly, it also has a reverse battery protection feature that prevents damage if the input voltage is applied to the output pins.

The MC79L15ABDR2 is an efficient, low-noise, low-cost device ideal for use in a wide range of applications, such as power supplies and controllers. Its adjustable current limit and reverse battery protection make it a safe device to use, and its low dropout voltage and good ripple rejection ensure that the output voltage remains regulated and accurate. Its long-term stability also means that it can be used as a reliable source of power in a variety of applications.

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