LR645N3-G

Current - Output:	3mA
Base Part Number:	LR645
Supplier Device Package:	TO-92-3
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 155°C
Protection Features:	--
Control Features:	--
PSRR:	60dB (120Hz)
Current - Quiescent (Iq):	150µA
Series:	--
Voltage Dropout (Max):	--
Voltage - Output (Max):	12V
Voltage - Output (Min/Fixed):	8V
Voltage - Input (Max):	450V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Bulk

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Introduction

The LR645N3-G is an integrated low dropout linear voltage regulator that has been designed as a high-performance, cost-effective alternative to traditional power management solutions. It offers excellent efficiency and features an adjustable output voltage ranging from 150mV to 25V. In addition, it is capable of operating over a wide input voltage range and delivering low ripple load-step response. This article will provide a brief overview of applications and working principles associated with the LR645N3-G.

Applications

The LR645N3-G voltage regulator is ideal for use in a wide range of applications. It is well-suited to any applications requiring a high-efficiency, low-noise power supply. Such applications include powered consumer electronics, test and measurement instruments, industrial automation and control systems, telecom equipment, and embedded networks. It also provides a cost-effective alternative to conventional, high-temperature linear regulators.In addition to its wide range of applications, the LR645N3-G also offers a number of advantages. It features low power dissipation for improved performance and low cost of ownership. It also offers adjustable output voltage, providing flexibility for various applications, such as microprocessors, DSPs, and field programmable gate arrays.

Working Principle

The LR645N3-G operates on the principle of linear regulation. This method of regulation is utilized by many power regulation circuits due to its simple and reliable operation. The core operation of the LR645N3-G relies on the use of an external precision voltage reference and an error-amplification control circuit to maintain a set output voltage in the face of varying loads and line changes.The LR645N3-G utilizes a feedback loop to regulate the output voltage. In the loop, the output voltage of the LR645N3-G is compared to the reference voltage, and if there is any difference, an error signal is generated. This error signal is then amplified and fed back to the control circuit, which adjusts the voltage to maintain the desired output. As long as the difference between the output and reference voltages remains within a certain range, the system is said to be in control and the output will remain at the desired voltage level.

Conclusion

The LR645N3-G low dropout linear voltage regulator provides a cost-effective, high-efficiency solution for a wide variety of application fields. It features adjustable output voltage, low power dissipation for improved performance, and excellent load-step response. Its simple and reliable operation is based on the principle of linear regulation, and its feedback loop ensures precise regulation of the output voltage.

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