AN78L24M

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The AN78L24M is a monolithic integrated circuit designed to provide a low-cost current source for the constant current driving of sensitive loads, and voltage stabilization. This linear voltage regulator is generally used for audio equipment and consumer applications. It is available in an 8-pin dual in-line package (DIP) and a 6-lead TO-220 style package, and is commonly referred to as a low voltage regulator or a three-terminal adjustable voltage regulator.

The AN78L24M has an adjustable output adjustable from 1.25 to 24 volts, with a minimum output voltage of 1.2 volts and a maximum output current of 0.5 amperes. The device has an input voltage range of 2.7 to 36 volts and operates over a wide temperature range of -40 to +85°C. It has built-in reverse-battery protection and can be used to supply up to 24 volts. The device can also be used in battery-backed systems.

The AN78L24M is an ideal choice for any application requiring fixed voltage regulation over a wide range of input voltages. It is designed to provide maximum load regulation over a wide range of line and load conditions. The device has a thermal shutdown protection feature that limits the maximum junction temperature to prevent damage from excessive temperature. The device also includes current limiting and reverse-battery protection features.

The AN78L24M has a wide range of applications including, but not limited to, digital audio and video devices, LCD television sets, DVD players, cell phones and portable digital devices, automotive electronics, and many other consumer electronics products. The device is also widely used as a stand-alone low voltage regulator.

The AN78L24M operates by employing an internal PNP transistor to control the current flow. The device is capable of supplying up to 0.5 amperes of current by connecting the output voltage pin to the current limit pin. When the output voltage is greater than the current limit pin, the internal PNP transistor turns on and allows current to flow out of the output pin to the load. When the output voltage is less than the current limit pin, the internal PNP transistor turns off and the current is cut off.

The AN78L24M also includes a positive temperature coefficient (PTC) that helps to reduce line and load regulation errors when the device is used in a low-voltage regulation application. The PTC helps to reduce the resistance of the internal transistor as temperature increases, which helps to maintain a regulated output voltage over the wide temperature range.

The AN78L24M is an excellent choice for low voltage regulation applications due to its low cost, wide input voltage range, wide output voltage range, and its ability to provide current limiting and thermal protection features. Its wide input voltage range, combined with its low output voltage range, makes it an ideal low voltage regulator for many applications.

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