MC78L05ACDG

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The MC78L05ACDG is a three pin monolithic IC commonly used as a voltage regulator designed with Over-Temperature and Short Circuit Current Limiting. Its primary voltage regulator is an adjustable linear typethat offers an output current up to 100mA and outputs of 5V, 6V, 9V, 10V and 12V.

The MC78L05ACDG Powere Management and IC (PMIC) allows for precise regulation of circuit voltage and current, enabling it to be used in a variety of applications. It can be found in a range of devices ranging from computers and mobile phones, to home and industrial automation modules.

The MC78L05ACDG can operate from a wide input voltage range of 5-35V, and offers an adjustable output voltage of between 1.2 and 37V. The device can provide a load regulation of 0.2%/2.5V, temperature stability of ±0.02%/°C and a maximum output resistor current of up to 100mA. The device also offers an option to disable its regulation function, allowing it to be used as a simple switch.

On the technical side, the MC78L05ACDG application field and working principle can be explained as follows. The MC78L05ACDG is a three-terminal linear voltage regulator, based on a self-controlled, variable duty cycle (VDR), non-precise, three-pin complementary circuit, powered from an input voltage source VIN. It includes an input voltage sensing circuit and an output voltage sensing circuit.

The MC78L05ACDG is an electrolytic-based voltage regulator, dependent on the difference between the input voltage and the output voltage, designed to maintain a stable output voltage VOUT in spite of variations on the input voltage or changes in the current demands of the load. This is achieved with the use of an internal feedback compensator, which adjusts the current level of the regulator transistors in response to the output voltage and current demand.

The MC78L05ACDG works in two main modes. First, in fixed-output mode, the device maintains a fixed output voltage and current level. When the current demand of the load is below a certain threshold, the device switches to the second mode, where it regulates the output current and keeps it constant, even if the load current changes.

The most important features of the MC78L05ACDG in terms of its application field and working principle include its low power consumption, high voltage utilization efficiency, high stability, fast recovery time, no external components and its flexibility. As a result, it is an ideal choice for a wide range of consumer and industrial applications where there is a need to regulate voltage levels or current demands.

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