LM3410YSD/NOPB

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	DC DC Regulator
Topology:	SEPIC, Step-Up (Boost)
Internal Switch(s):	Yes
Number of Outputs:	1
Voltage - Supply (Min):	2.7V
Voltage - Supply (Max):	5.5V
Voltage - Output:	3 V ~ 24 V
Current - Output / Channel:	2.8A (Switch)
Frequency:	525kHz
Dimming:	PWM
Applications:	Backlight
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	6-WDFN Exposed Pad
Supplier Device Package:	6-WSON (3x3)
Base Part Number:	LM3410

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The LM3410YSD/NOPB from Texas Instruments is a high efficiency, constant current, primary-side regulation LED driver, which offers customers a unique solution for replacing the traditional secondary-side regulation. It integrates a brightness control MOSFET, a voltage regulator and an inductorless current source, allowing an extremely high efficiency with no heat-sink required. The LM3410YSD/NOPB is primarily intended for low power LED designs, such as those found in general illumination, automotive applications and solid-state lighting.

The LM3410YSD/NOPB operates from a 20V input supply range, with 2.5V to 28V LED output voltage range. This LED driver has an internal MOSFET switch that allows for direct control of the LED brightness with a simple logic signal. It is capable of supplying up to 20mA of current with a total quiescent current of 0.5mA. The device has an internal voltage regulator and thermal loop for high efficiency and reliable operation over a wide range of environment and supply conditions. The peak efficiency of the LM3410YSD/NOPB can exceed 92%.

The LM3410YSD/NOPB offers a wide range of protection features such as under-voltage lockout, over-voltage protection, over-temperature protection, and adaptive over-current protection. It also features a low ripple mode to reduce the peak current stress on the LED. The LM3410YSD/NOPB is designed to operate without an external inductor, thereby reducing total system cost and size.

The device\'s peak current and soft start functions are internally set and can be adjusted with the external resistor. The peak current can be set to an optimal value for particular LEDs and dimming range. The soft start function reduces inrush current at start-up and turns on the device in a linear fashion.

The LM3410YSD/NOPB functions by regulating the voltage output in order to maintain the current through the LED constant. It uses a peak current method that produces average current in the LED that is a constant multiple of the sense voltage (or, in other words, the voltage across the sense resistor). The voltage regulator is a buck regulator with a fixed, internal reference current and the current is regulated by setting the duty cycle of the internal switch appropriately.

The LM3410YSD/NOPB has a wide range of operating conditions and protections set internally, allowing it to withstand wide variations in operating conditions. As such, it is suitable for use in a wide range of LED applications, including general illumination, automotive, and LED flood lights. It is a cost-effective solution for replacing the traditional secondary-side regulation, offering high efficiency, low quiescent current, wide range of operating conditions, and a wide range of protections.

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