LD1117AV

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

LD1117AV Application Field and Working Principle

LD1117AV is a low dropout (LDO) three-terminal positive voltage regulator from SGS-Thomson Microelectronics, which supports a variety of voltage outputs. Specifically, it ensures that the output voltage range is 1.5V - 20V, and the maximum output current is 1A. In addition, LD1117AV is available in a 3-pin TO-220 package, thus saving space and facilitating high-density assembly.

LD1117AV is widely used in handheld devices such as MP3 players, PDAs, cellular phones, etc., due to its low quiescent current and high output accuracy. It provides features such as ESD protection, current limitation, thermal shutdown and overvoltage protection, so that it is suitable for a variety of applications.

Working Principle

The working principle of the LD1117AV voltage regulator is straightforward. It is based on a simple comparative amplifier configuration that produces a constant, stable output voltage. The output voltage is compared with a precision voltage reference by a feedback network, with the difference amplified by a PNP transistor and corrected with a series resistor. When the output voltage is less than the reference voltage, the output transistor is turned on, allowing current to flow through the output terminals, thus increasing the output voltage. Conversely, when the output voltage is greater than the reference voltage, the output transistor is turned off and the output voltage is reduced. This process is repeated continuously, and the output voltage is maintained at the reference voltage.

In addition, the LD1117AV is equipped with protection features such as thermal shutdown and current limitation, to ensure safe and reliable operations. The thermal shutdown feature prevents the device from overheating and prevents damage. The current limitation feature helps prevent overload conditions that can cause damage to the device or other components. In addition, LD1117AV also has an overvoltage protection circuit that trips if the output voltage exceeds its regulation limit.

Features

LD1117AV is an efficient and cost-effective voltage regulator. It supports a variety of output voltages from 1.5V to 20V, and provides a maximum output current of 1A. In addition, its low quiescent current, high accuracy, ESD protection and current limitation features make it ideal for a variety of applications. Moreover, with its 3-pin TO-220 package, it is easy to mount and can be easily used in high-density applications.

In addition, LD1117AV features a very low dropout voltage of 0.1V, making it highly efficient and capable of powering a variety of low-voltage devices. It also has tight line and load regulation characteristics, ensuring low noise and high accuracy. Furthermore, LD1117AV has a variety of built-in protection features, making it suitable for a variety of applications.

Conclusion

LD1117AV is an excellent low dropout three-terminal positive voltage regulator from SGS-Thomson Microelectronics. It supports a variety of voltage outputs from 1.5V - 20V, and its low quiescent current and high output accuracy make it suitable for a variety of applications. In addition, it has a variety of built-in protection features, such as ESD protection, current limitation and thermal shutdown, making it suitable for safe and reliable operations. Finally, its 3-pin TO-220 package helps to save space and facilitates high-density assembly.

The specific data is subject to PDF, and the above content is for reference