Dimming:	Analog, ELV, Triac
Weight:	0.489 lb (222g)
Approvals:	cUL, UL, cRUcs, FC, CE, CB
Mounting Type:	Chassis Mount
Size / Dimension:	3.43" L x 2.36" W x 1.07" H (87.0mm x 59.9mm x 27.2mm)
Termination Style:	Wire Leads
Efficiency:	87%
Operating Temperature:	-30°C ~ 90°C
Ratings:	IP64, NEMA 410
Features:	OCP, OTP, SCP
Series:	ESP
Power (Watts):	38W
Current - Output (Max):	900mA
Voltage - Output:	28 ~ 42 V
Voltage - Input (Max):	277VAC
Voltage - Input (Min):	120VAC
Number of Outputs:	1
Topology:	AC DC Converter
Type:	Constant Current
Part Status:	Not For New Designs

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LED Drivers: ESP040W-0900-42 Application Field and Working Principle

Introduction

Light emitting diode (LED) is a semiconductor light source capable of emitting various colors of visible light, and widely used for various lighting and display applications. According to LED characteristics and requirements of the application, LED drivers are developed to fulfill the needs of the application. ESP040W-0900-42 is one of the most popular LED drivers that is widely used for various lighting applications.

Application Field of ESP040W-0900-42

The ESP040W-0900-42 LED driver is one of the most popular LED drivers in the industry and is suitable for a wide range of applications. It is especially suitable for lighting applications, such as landscape lighting, plant lighting, street lighting, and decorative lighting. It can also be used in displays, such as digital signage, airport LED display boards, automotive LED displays, and projection boards. The ESP040W-0900-42 LED driver is typically used for LED lighting applications with a power range from 0.9W to 40W.

Working Principle of ESP040W-0900-42

The ESP040W-0900-42 LED driver is designed to provide the highest efficiency and reliability when operating LED lights. The working principle of the driver is that it converts AC power supply into DC power supply and stabilizes the output current, in order to drive different LED lights safely. The driver adopts the pulse width modulation (PWM) and adjustable duty cycle technology to maintain a constant current output. The ESP040W-0900-42 also features a high-efficiency planar transformer and low-ripple DC output, which provides the LED lights with stable and high efficiency power supply.The ESP040W-0900-42 LED driver is equipped with built-in over-current protection, temperature protection, short-circuit protection, over-temperature protection and overload protection functions to protect the driver from damage when it is operating. It is also equipped with adjustable dimming function, which allows users to adjust the brightness of the LED lights to the desired level. The driver also has an overvoltage protection function, which ensures that the output voltage will not exceed the maximum rated output voltage.

Conclusion

The ESP040W-0900-42 LED driver is one of the most popular LED drivers in the industry and is suitable for a wide range of applications. It is especially suitable for lighting applications such as landscape lighting, plant lighting, street lighting, and decorative lighting. It also provides the LED lights with stable and high efficiency power supply and safety protection functions. The adjustable dimming function further enhance its user experience.

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