MC7808CD2T

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The MC7808CD2T is an 8 pin voltage regulator from ON Semiconductor’s quad package family of linear voltage regulators. It offers unsurpassed performance over a wide operating temperature range and requires only a few additional external components for operation. This device is well suited for applications which require both high efficiency and low component count. To understand the MC7808CD2T, one must first understand its application field and working principle.

Application Field:

The MC7808CD2T is mainly used in regulating power supplies. It is capable of regulating output voltages from 6V up to 15V, making it suitable for a wide variety of power conversion applications. It can be used to provide a stable supply voltage for a variety of systems, including microcontrollers, digital logic, and microprocessors. It is also commonly used in automotive and industrial cellular applications. The device is designed with a current limiting feature that prevents over-current and short circuit conditions, as well as a reverse current protection circuit to protect the device from damage due to output short circuits.

Working Principle:

The MC7808CD2T is a three-terminal, linear voltage regulator with a 1.2A output current capability. It works on the principle of voltage regulation, where an adjustable voltage source is used to regulate the output voltage. The device is able to provide a stable and regulated output voltage even when subjected to input supply variations or load changes. This is achieved by comparing the output voltage with a built-in reference voltage and adjusting the output power accordingly. The output voltage can be adjusted over the range of 6V to 15V by simply increasing or decreasing the input voltage. The device also contains a temperature protection circuit to prevent thermal failures and protect the integrated circuit (IC) from damage due to over heating.

Conclusion:

The MC7808CD2T is a simple, efficient and cost-effective device for regulating power supplies from 6V up to 15V. It is capable of providing a stable output voltage despite supply variations or load-related changes. Its temperature protection circuit ensures safe operation in high temperature environments and its reverse current protection prevents damage from output shorts. The device requires minimal external components for operation, making it an ideal choice for applications which require low component count and high efficiency.

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