NCV8518APDR2G

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NCV8518APDR2G is a 3.2 A low-dropout linear regulator that provides a solution for applications requiring a low quiescent current. The device has 0.5 Ω RDS(ON) to 5 A peak current capability, making it suitable for a wide variety of power applications. The regulator has a wide input voltage range of 4.5 V to 5.5 V, with an adjustable output voltage range of 0.9 V to 5.3 V.

The device features an adjustable output voltage that is accurate within ±0.5% over the entire operating temperature range and a dropout voltage of only 0.4 V at 1.5 A. The regulator delivers current-limit protection, thermal shutdown protection, as well as a current-sustain feature that keeps the device in regulation even when the output is overloaded. Its low drop-out voltage and wide output current range make it suitable for applications where space is at a premium and high efficiency is required.

NCV8518APDR2G brings several unique and highly desired features to power management designs. Its generous output current range and low-dropout voltage ensure optimal load performance, while its current-sustain feature maintains a constant output voltage even when the output is overloaded. Also, its ±0.5% accurate output voltage makes it suitable for applications with tight regulation requirements, such as battery charging and voltage regulation.

The operating principle of NCV8518APDR2G is as follows: the regulator operates as a PNP current source, generating a mirrored current, I Mirror , in response to the reference voltage, V REF , multiplied by the current-gain, G. When the regulator is under-loaded, I Mirror is smaller than the required output current, and the output voltage drops. Conversely, when the regulator is over-loaded, I Mirror is greater than the output current, causing an increase in the output voltage. This feature allows the device to operate at very low drop-out voltages and maintain accurate regulation under various load conditions.

NCV8518APDR2G is suitable for a wide range of applications such as portable consumer electronics, computer peripherals, audio/video equipment, handheld devices, notebook systems, and automotive applications. It can also be used to provide supply current in applications where space is at a premium or where high efficiency is required. The device can also be used in battery charging systems, LED lighting systems, and various power management solutions.

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