Introduction to L79L15ACUTR Application Field and Working Principle

The L79L15ACUTR is an integrated circuit that provides linear regulation for applications such as battery charging systems, motor control, and power supply for portable communication devices. It is designed to operate with a wide input voltage range from 9V to 24V and provides a regulated output voltage of 5V ± 1%. This regulator features short-circuit protection, thermal overload protection, under voltage shutdown, and over voltage shut down.

Application of L79L15ACUTR

The L79L15ACUTR is widely used in a variety of electronic applications. It is most commonly used to regulate power supply in various portable communications devices such as cell phones and PDAs. It can also be used to help keep the voltage of car batteries and other similar systems under control. Additionally, this regulator is often used in motor control systems to provide a reliable, efficient, and regulated power supply.

Working Principle

The L79L15ACUTR is an integrated linear regulator. This type of regulator maintains a constant output voltage regardless of supply voltage fluctuations. In operation, the input voltage is applied to the regulator and the IC will compare the input voltage to the output voltage. If the input voltage is greater than the reference voltage, the IC will increase the output current to maintain the output voltage. If the input voltage is lesser than the reference voltage, the IC will reduce the output current.

The voltage regulation is achieved through a combination of power pass devices and voltage regulating circuits. The power pass device, usually a MOSFET, acts as a switch to maintain the regulation. When the input voltage is greater than the reference voltage, the power pass MOSFET is turned OFF, thereby allowing the output voltage to be regulated by the voltage regulating circuit. If the input voltage is less than the reference voltage, the MOSFET is turned ON, supplying power to the output and providing the required regulation.

In addition to this basic working principle, the L79L15ACUTR also provides several features for protection and improved performance. These features include short-circuit protection, thermal overload protection, under voltage shutdown, and over voltage shutdown. These features ensure that the device operates reliably under a variety of conditions.

Conclusion

This article has discussed the application field and working principle of the L79L15ACUTR linear voltage regulator. This device is widely used to provide reliable, efficient, and regulated power supply in a variety of applications such as battery charging systems, motor control, and portable communication devices. The voltage regulation is achieved through a combination of power pass device and voltage regulating circuits. Additionally, several features are included to ensure reliable and safe operation.