MC7818CD2TR4

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MC7818CD2TR4 is a series of high performance, low-dropout three-terminal voltage regulators specifically designed for the needs of personal computers and related peripherals. With an adjustable output voltage range from 1.265 V to 20 V and an output current of up to 2 A, it can provide good noise and transient performance while needing only a small surface area and current draw. It is a very versatile design and can be used in a variety of applications requiring high performance and reliability.

MC7818CD2TR4 voltage regulators are designed to maintain a constant, accurately regulated output voltage. The circuit works by comparing the output voltage (across the output terminals) to a fixed reference voltage (across the reference terminals). The regulator then modulates the current passing through the pass element (transistor) to maintain a constant reference voltage. When the output voltage is higher than the reference voltage, the regulator turns the pass element off, thus preventing further current flow into the output. When the output voltage is lower than the reference voltage, the regulator turns the pass element on, thus allowing current to flow into the output.

The MC7818CD2TR4 can be used for a wide range of applications, from high-end server power supplies to mobile devices, such as USB chargers. Its two most popular applications are power supply system and general-purpose voltage regulator.

In power supply system applications, MC7818CD2TR4 operates as the final output voltage regulator and usually requires a large heatsink to dissipate heat as the current can reach up to 2A. It can also be used as a power supply sequencing device, providing outputs with different ramp rates and adjustable output trip levels.Due to its wide range of adjustable voltage and its high current capability, MC7818CD2TR4 is an excellent replacement for mechanical voltage regulators.

In general-purpose voltage regulator applications, the MC7818CD2TR4 can be used to precisely regulate the output voltage of an unregulated power supply. This can be used in applications such as computers, large appliances, or even to provide supply power for microcontroller systems. The adjustable output voltage can be set from 1.265V to 20V and control from the external reference voltage.

In summary, the MC7818CD2TR4 is a three–terminal adjustable linear voltage regulator, specifically designed for computer, consumer, and industrial applications. Due to its adjustable output voltage range from 1.265V to 20V, it can be used for wide range of applications. The regulator has the ability to provide a high-current output for power supply sequencing and general-purpose voltage regulation. It provides fast transient response, high output accuracy, and excellent output ripple rejection, making it an ideal choice for applications where high power and precision are needed.

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