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LTspice model for COB LED

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BradtheRad

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The graph shows the LC019D conducting 1A at 37V.
Starting out with a simulation, I changed the led to that spec, but it makes the curve too steep (because the led equation is exponential). However by combining a series resistor, it makes the slope more linear and more gradual. I used trial-and-error. because it's not obvious how to derive an equation from the curve.

led 33V plus series 4 ohm resistor resemble hi-V led.png

The led conducts 1A @33V. The 4.4 ohm resistor adds another 4.4V @1A.
Over a range of 31 to 39V, current draw goes from 94mA to 1.3A. The curves are similar.
 
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