LM3405XMKX

Voltage - Output:	13.5V
Base Part Number:	LM3405
Supplier Device Package:	TSOT-23-6
Package / Case:	SOT-23-6 Thin, TSOT-23-6
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Applications:	Lighting
Dimming:	PWM
Frequency:	1.6MHz
Current - Output / Channel:	1A
Series:	--
Voltage - Supply (Max):	15V
Voltage - Supply (Min):	3V
Number of Outputs:	1
Internal Switch(s):	Yes
Topology:	Step-Down (Buck)
Type:	DC DC Regulator
Part Status:	Discontinued at Digi-Key
Packaging:	Tape & Reel (TR)

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Introduction to LM3405xMKx Application Field and Working Principle

LM3405xMKx is a type of PMIC (Power Management Integrated Circuit), which belongs to the LED driver family. It is specifically designed for powering high-current LED lights in a wide variety of applications such as automotive, industrial, and general lighting. LM3405xMKx is an advanced technology, providing excellent LED light output and long LED service life.

Features and Benefits

The primary benefits of LM3405xMKx include:

• Wide input voltage range: 7V to 42V.
• Continuously adjustable output current: 0.1A-1.5A
• Excellent thermal design for improved junction temperature.
• High-efficiency, low no-load power consumption.
• Externally adjustable output current with an external voltage reference.
• Programmable open and short circuit protection.
• Overvoltage and under-voltage protection.
• Programmable over-temperature protection.

Applications

LM3405xMKx is widely used in high-power LED lighting applications such as street lights, industrial lighting, and light fixtures. It is also applicable in automotive applications, and solar energy systems.

Working Principle

LM3405xMKx works by converting a relatively low DC voltage into a regulated and adjustable current, which is then used to power the LEDs. The input voltage is applied to an inductor, which stores energy and supplies the LEDs with the higher current. This higher current powers the LEDs, with the help of a diode, which serves to keep the current flow in the correct direction. Further, the current passing through the LEDs is regulated using a reference voltage, to ensure that the LEDs are not damaged due to sudden voltage spikes, or low voltage levels.

Conclusion

Overall, LM3405xMKx is an excellent LED driver, which can be used for a wide range of LED lighting applications. It provides excellent power efficiency, robust protection features, and wide input voltage range. Its features and benefits make it an ideal choice for use in automotive, industrial, and general lighting applications.

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