NCV78L05ABDG

NCV78L05ABDG Application Field and Working Principle

The NCV78L05ABDG is an adjustable low dropout linear regulator from ON Semiconductor, featuring great performance and small footprint. The device features low cost, low quiescent current, lower static power dissipation, and fast transient response. Additionally, it provides overcurrent protection, short-circuit protection, and over-temperature protection to make applications robust. This device is suitable for a variety of applications, ranging from embedded systems and signal processing circuits to digital audio and industrial applications.

Application Fields

The NCV78L05ABDG is suitable for applications that require lower noise and tighter regulation. Applications range from microprocessor and microcontroller applications to portable instrumentation, remote sensing, and telecom systems. Additionally, its higher power supply rejection ratio and adjustable voltage output makes it suitable for audio I/O circuits and industrial control systems. These types of applications need a current limiting function, which the NCV78L05ABDG can provide.

Working Principle

The NCV78L05ABDG is a linear regulator, which means it works by using an internal PNP transistor to pass a current from its input to its output. The output voltage is then regulated by adjusting the driver for the PNP transistor. The device has an internal bandgap reference, with an output reference voltage of 1.25V which is then used to drive the PNP transistor. This means the output voltage of the device is the same as the reference voltage, provided the output load is within its load current range.

The device also features an adjustable voltage, allowing the user to adjust the output voltage from its minimum of 0.8V to 36V. The device has an adjustable current limit, allowing the user to set the output current limit up to the maximum device current limit. Additionally, the NCV78L05ABDG has a high power supply rejection ratio and excellent thermal stability, allowing it to be used in applications requiring low noise and tight regulation.

Conclusion

The NCV78L05ABDG is an adjustable low dropout linear regulator from ON Semiconductor that has a wide range of applications. Its adjustable current limiting and high power supply rejection ratio makes it suitable for embedded systems and signal processing circuits, audio I/O circuits and industrial control systems. It is also robust, providing overcurrent protection, short-circuit protection, and over-temperature protection.