LE30CD

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LE30CD belongs to the class of linear voltage regulator, which is a type of integrated circuit used to keeps a constant output voltage even in the presence of considerable fluctuation in its input voltage. It is perfect for use in voltage surge protection and peak voltage filter, and is widely used for solid-state devices that require stablized supply voltages. Herein, we will explore the application field and working principle of LE30CD.

Application Field

The LE30CD linear voltage regulator family are suitable for commercial applications where their capabilities provide the user with many assuring features. Essentially, the LE30CD is a three-terminal device that can be used as a constant-voltage source, and comprises a built-in adjustable voltage reference, temperature stabilizer, and mistake comparator stage. This device can provide up to 800mA output current, and includes a logic-controlled shutdown, as well as an under-voltage protection function. It is provided in an adjustable and fixed voltage options, and is suitable for use in applications ranging from 5V to 36V, such as commercial and industrial equipment, automotive, aerospace, and other control systems.

Working Principle

The LE30CD works with a very simple topology, incorporating a basic voltage regulator circuitry structure. It is designed with an internal voltage reference that sets the output voltage as a function of an adjustable terminal voltage. This begins with an error amplifier comprised of transistors, resistors, and capacitors, which is the regulator’s active component. Following that, the error amplifier is connected directly to the adjustment end of the regulator, while the other end is connected to the reference and ground point. This yields a 2nd-order voltage setting the voltage applied to the output stage. The output of the regulator is then compared to the signal at the error amplifier’s output, and the signal is brought back to the input signal when it is higher than the output.

Meanwhile, other features of the LE30CD include an adjustable over-voltage protection, short circuit current limit, and output control for inherently safe operation. In addition, this IC can provide high PSRR power supply ripple rejection, low ground current, and wide input voltage range. It also has a wide operating temperature range, making it ideal for heating and cooling applications.

Conclusion

LE30CD is a powerful linear voltage regulator. It is highly versatile and its applications extend from commercial and industrial machines to automotive, aerospace, and control systems. The LE30CD provides users with useful features such as adjustable over-voltage protection, short circuit current limit, and output control for safe operations. It is a very cost-effective solution that provides reliable performance with low ground current, high PSRR power supply ripple rejection, and wide input voltage range.

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