MC7818CD2T

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The MC7818CD2T is a three-terminal adjustable voltage regulator which requires only a single external resistor to set the output voltage. This device is capable of extending the input voltage range up to 800 V. It has current limit, thermal shutdown protection, output transistor safe operation area protection, and over-voltage protection (OVP) as standard features. The device also has an ultralow dropout voltage, typically less than 0.6 V over the full temperature range and load range.

The MC7818CD2T is designed for use in a wide range of applications including power supplies, linear and switching regulators, motor control, and other fields needing a low dropout voltage regulator. It can also be used in computer power supplies, scientific, hobby and industrial control equipment, as well as portable and battery-powered equipment.

Working Principle

The MC7818CD2T works by sensing the voltage at the Input/Output point and then adjusting the output voltage through a closed loop. The output voltage is set via an external resistor and the regulator is designed to maintain a 1.25 V differential between the input voltage and output voltage. The regulator is intended to hold the voltage within 0.2 % of the setpoint.

A major benefit of this regulator is its low dropout voltage, meaning that it requires less input current for a given output current. This can be useful for designs where power consumption is an issue. The regulator also employs many safety features including a current limit, thermal shutdown protection, output transistor safe operation area protection, and over-voltage protection.

The MC7818CD2T is a linear regulator and can be used in many applications, including: automotive applications, lighting and LED displays, consumer electronics, and other uses where a low dropout linear regulator is needed.

In conclusion, the MC7818CD2T is a three-terminal adjustable voltage regulator which requires only a single external resistor to set the output voltage. It works by sensing the voltage at the Input/Output point and then adjusting the output voltage through a closed loop. With a low dropout voltage, current limit, thermal shutdown protection, output transistor safe operation area protection, and over-voltage protection, the MC7818CD2T is a valuable and versatile addition to any design where a low dropout linear regulator is needed.

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