NCP502SQ18T1

Current - Output:	80mA
Base Part Number:	NCP502
Supplier Device Package:	SC-88A (SC-70-5/SOT-353)
Package / Case:	5-TSSOP, SC-70-5, SOT-353
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	55dB (1kHz)
Current - Supply (Max):	90µA
Current - Quiescent (Iq):	1µA
Series:	--
Voltage Dropout (Max):	1.7V @ 80mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
Voltage - Input (Max):	12V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The NCP502SQ18T1 voltage regulator is the latest addition to ON Semiconductor\'s wide range of voltage regulators. This linear regulator IC provides a cost-effective solution for applications requiring low noise, low output voltage accuracy, and wide operating temperature range. The device is designed for high-efficiency power conversion between a DC voltage source and a load.

Application

The NCP502SQ18T1 can be used to regulate voltage in a variety of applications in industrial, automotive, computing, networking, telecommunications, and consumer electronics markets. The device is especially suitable for power supplies that require a wide operating temperature range. It can also be used in battery-powered systems to reduce power consumption while maintaining a stable output voltage.The linear regulator converts the input voltage to a stable, regulated output voltage with a high output voltage accuracy of ±2%. Its wide operating temperature range of -40 to +125°C makes it suitable for a variety of extreme operational environments. The NCP502SQ18T1 provides excellent power conversion efficiency, with a maximum typical efficiency of 92%. The device also features a low output noise of 100 μV RMS and a low dropout voltage of 0.9 V when set to the minimum output voltage.

Features

The NCP502SQ18T1 linear voltage regulator features an input voltage range of 6 V to 18 V with a selectable output voltage of 1.2 V to 5.0 V in single output configurations, adjustable from 0.98 V to 6.49 V in dual output configurations, and adjustable from 0.98 V to 5.25 V in triple output configurations. It has a load current rating of up to 1.5 A, depending on the output voltage.The device is available in several package options: a space-saving, 0.3” × 0.3”, 16-pin TQFN package; a 0.6” × 0.6”, 12-pin TSSOP package; and a 0.93” × 0.93”, 9-pin MLP package.

Working Principle

The NCP502SQ18T1 linear regulator works by using a voltage reference and an error amplifier to compare the input voltage to the voltage reference. When the input voltage is greater than the reference voltage, the error amplifier will reduce the output of the regulator. When the input voltage is lower than the reference voltage, the error amplifier will increase the output. This process is known as voltage regulation.The error amplifier will keep the output voltage constant, regardless of variations in the supply voltage, temperature, or load current. This type of regulation is not as efficient as a switched-mode regulator, but is more accurate, as the output voltage is more stable.

Conclusion

The NCP502SQ18T1 linear voltage regulator is an excellent choice for applications requiring low noise, high efficiency, and wide operating temperature range. Its adjustable outputs make it suitable for a variety of applications, and its low output voltage dropout helps reduce power consumption and increase system reliability. The device is available in several package options to meet the needs of a wide range of applications.

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