LM2675N-5.0/NOPB

Voltage - Output (Min/Fixed):	5V
Base Part Number:	LM2675
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	260kHz
Current - Output:	1A
Voltage - Output (Max):	--
Series:	SIMPLE SWITCHER®
Voltage - Input (Max):	40V
Voltage - Input (Min):	6.5V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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Introduction

The LM2675N-5.0/NOPB is one of the current market’s most advanced DC-DC switching regulators. Unlike most linear regulators, the LM2675N is able to provide efficient voltage and current levels with an internal feedback mechanism. With its ability to work both with input voltages higher and lower than the output voltages, the LM2675N has found application in a variety of fields. This article will take a look at the LM2675N-5.0/NOPB’s application field and working principle.

Application Field

The LM2675N-5.0/NOPB is an ideal choice for powering numerous low voltage devices and circuits requiring an efficient and reliable supply of power. These applications can range from loads such as motors, LED’s, sensors, and transducers, to extremely small and sensitive loads such as laptops, tablets, and cell phones. What makes the LM2675N a great choice is its high efficiency, low power dissipation, and high frequency operation. Lower costs and thermal dissipation can be expected depending on the size of the load and the type of end application.The LM2675N can also be used in harsh EMI or RFI environments. It\'s designed to suppress electrostatic discharge (ESD) and features a built-in pre-bias shutdown. This feature provides extra protection against possible circuit damage that could occur when a reverse voltage is applied to the input. In addition, the LM2675N can be used as a voltage multiplier. A voltage multiplier is essentially a circuit that converts an AC input voltage to higher DC voltages. Applications requiring higher DC voltages, such as solar cell chargers, battery charger controllers, and temperature controllers, can benefit from the voltage multiplier performance of the LM2675N.

Working Principle

The LM2675N-5.0/NOPB is essentially a current-mode, pulse-width modulation (PWM) switching regulator. This means that a pulse-width modulated signal is used to control the output voltage of the regulator.The circuit board of the LM2675N consists of an array of MOSFET transistors arranged in a multivibrator/INVERTER configuration. The multivibrator oscillates at a predetermined frequency set by the user. Through the use of an external resistor, the desired output voltage is set. The output ripples and high-frequency switching noise of the device is further minimized through the use of a feedback loop that compares the required output voltage to the actual output voltage. This loop allows the LM2675N to regulate the voltage and current.Once the output voltage is stable, the output voltage is supplied to the load. Through the use of a high switching frequency, the LM2675N is capable of providing a stable output voltage with a low ripple.

Conclusion

The LM2675N-5.0/NOPB is a highly advanced DC-DC switching regulator ideal for a variety of applications. Its ability to operate on a wide range of input and output voltages, along with its low power dissipation and high efficiency make it a top choice for powering low voltage devices. Its current-mode, pulse-width modulation system allows it to achieve a high degree of precision when regulating output voltages. The LM2675N can also be used as a voltage multiplier, making it useful in higher voltage applications such as solar cell chargers and battery charger controllers. With these capabilities, the LM2675N makes a great choice for both small and large scale applications.

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