One thing to note that LEDs do not really have constant voltage drop across them, i.e. they very much are not ideal diodes. Typically LED datasheets have two cu

One thing to note that LEDs do not really have constant voltage drop across them, i.e. they very much are not ideal diodes. Typically LED datasheets have two curves that are of interest: current vs voltage curve (IV curve, typically roughly exponential) and light output vs current curve.