LM3406 - 1.5A High Voltage, Constant Current Buck Regulator for Driving High Current LEDs EVM


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The LM3406HV is a buck regulator controlled current source designed to drive a series string of high power, high brightness LEDs (HBLEDs) at forward currents of up to 1.5A. The converter`s output voltage adjusts as needed to maintain a constant current through the LED array.

The LM3406HV circuit and BOM that come pre-installed on the evaluation board are optimized to run from an input voltage of 24V, but the circuit can operate from a wide input voltage range of 6.0V to 75V. The current output ranges from 0.35A to 1.5A. shows the program jumper settings used to program currents of 0.35A, 0.7A, 1A, and 1.5A.

Automotive LED drivers
LM3406HV-Q1 1.5-A automotive constant current buck regulator for driving high power LEDs


Illumination LED drivers
LM3406HV 75V 1.5A constant current buck LED driver
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Evaluation board

LM3406HVEVAL/NOPB — LM3406 - 1.5A High Voltage, Constant Current Buck Regulator for Driving High Current LEDs EVM

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Type Title Date
* EVM User's guide AN-1993 LM3406HV Evaluation Board with 2 Wire Dimming (Rev. B) 01 May 2013
Certificate LM3406HVEVAL/NOPB EU Declaration of Conformity (DoC) 02 Jan 2019

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