NCP571MN12TBG Integrated Circuits (ICs)

Current - Output:	150mA
Base Part Number:	NCP571
Supplier Device Package:	6-DFN (2x2.2)
Package / Case:	6-VDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	--
Current - Supply (Max):	8µA
Current - Quiescent (Iq):	1µA
Series:	--
Voltage Dropout (Max):	0.45V @ 10mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.2V
Voltage - Input (Max):	12V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The NCP571 MN12 TBG is a high-performance three-terminal 1A linear voltage regulator with a 5V output voltage and a 12V input voltage. It is an 8-lead SOT-223 package and is an excellent choice for use in a variety of switching or linear power supply designs, as well as embedded controller applications. The NCP571 is designed with state-of-the-art CMOS technology which allows it to achieve high performance and low power dissipation.

Application Field

The NCP571 can be used for a wide range of applications, such as:

• DC-DC converters
• Portable electronics
• Disk drive electronics
• Point-of-load applications
• Telecom applications
• Computer peripherals
• Battery powered applications

In general, the NCP571 is an appropriate choice for systems or applications requiring fast transient response, low output voltage noise, or low output voltage dropout.

Working Principle

The NCP571 is based on a linear voltage regulation principle, meaning that it regulates the voltage between its input and output terminals by adjusting the resistance between them. The voltage regulator consists of a power transistor, a feedback control circuit, and a resistor divider.When the voltage at the output of the voltage regulator increases, the voltage at the divider resistor also increases. This increase is detected by the regulator’s feedback control circuit, which then adjusts the amount of current through the power transistor to maintain the output voltage at its desired level. In this way, the voltage regulator is able to maintain a constant voltage at its output, regardless of variations in input voltage or load changes.

Conclusion

The NCP571 is a high-performance, low-power three-terminal linear voltage regulator with a 5V output voltage and a 12V input voltage. It offers fast transient response, low output voltage noise, and low output voltage dropout, making it an excellent choice for a variety of switching or linear power supply designs and embedded controller applications. The NCP571 is based on a linear voltage regulation principle, which allows it to maintain a constant output voltage regardless of variations in input voltage or load changes.

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