NCV8518PWR2G

Current - Output:	250mA
Base Part Number:	NCV8518
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.295", 7.50mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C
Protection Features:	Over Temperature, Short Circuit
Control Features:	Enable, Reset, Wake-Up, Watchdog
PSRR:	--
Current - Quiescent (Iq):	150µA
Series:	Automotive, AEC-Q100
Voltage Dropout (Max):	0.75V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	45V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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IntroductionNCV8518PWR2G is a low dropout linear regulator with an operating current of 1.5A. The regulator operates over a wide input voltage range of 6V to 25V and delivers a voltage output over a range of 0.8V to 10V. Its low dropout voltage of 120mV at 1.5A output current and high accuracy of ±1% make this device a perfect choice for low voltage power conversion applications. This device offers a high transient response for fast load transients and offers extremely tight controlling of the output voltage.ApplicationsThe NCV8518PWR2G is suitable for a variety of power conversion applications where an accurate and low dropout linear regulator is needed. Its wide input voltage range means it can be used in applications where battery supply or other DC power sources with different input voltage are present. Because of its low dropout voltage, it can provide an output voltage with only a small difference from the input voltage within the specified range. This make it a good choice in applications where low output voltage stability is needed.In addition, NCV8518PWR2G is ideal in noise sensitive applications such as audio amplifiers, where electromagnetic interference caused by switching regulators is an issue. It is also a good solution for motor control applications where its tight control of the output voltage is essential. It can also be used in memory card applications and external storage solutions.Working PrincipleThe NCV8518PWR2G is a low dropout linear regulator featuring an adjustable output voltage. It has an internal voltage reference and an error amplifier. The voltage reference provides a fixed reference voltage and the error amplifier senses the difference between the reference voltage and the output voltage.The error amplifier then drives the output transistor of the regulator. If the output voltage rises, the error amplifier will reduce its output signal, causing the output transistor to decrease the output current. On the other hand, if the output voltage is too low, the error amplifier will increase its output signal and cause the output transistor to increase the output current.The output transistor is protected against over-current and over-temperature conditions by an internal current limit and thermal protection circuit respectively. The NCV8518PWR2G is available in a thermally enhanced surface mounted package.ConclusionNCV8518PWR2G is a low dropout linear regulator that can provide a wide range of output voltages. It is suitable for a variety of power conversion applications where an accurate and low dropout regulation is required. It is especially suitable for low voltage, noise-sensitive and motor control applications. The device has an internal voltage reference and an error amplifier for tight control of the output voltage and protection against over-current and over-temperature conditions.

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