Could someone briefly explain, which setting gives me better results in perceived brightness/runtime ratio?
Let it be the two buck converters. The two has simple high/low/candle settings and identical efficiency of 80%. This efficiency will remain flat at all modes in both the converters. Let the linear converter has 1000 mA high, 100 mA low, 10 mA candle mode, and the digital converter 100/10/1% duty cycle, with ON LED current equal to 1000 mA.
Let it be the LED. It will have 220 lm and Vf=3.4V at 1000 mA, 33 lm; 2.9V at 100 mA and 4 lm; 2.7V at 10 mA
What will be the energy usage on low and candle mode in both drivers?
What will be the light output in lumens?
What will be the perceived brightness? (I heard that "PWMed" lumens are different from constant current lumens... Is it true?)
I got lost in these all numbers...