I am building a small LED lamp from a jar(about 100ml), so all components should fit in it. I decided to use a LED drive/Joule Thief, that I found at online Chinese store.
Datasheets (all I can find is in Chinese language): https://pdf1.alldatasheet.com/datasheet-pdf/view/1133536/SHININGIC/YX8122.html
I also found similar question: LEDs driver circuit
The circuit is very simple, but I still failing to make it work. I have a white 5mm LED(3.3V, 20mA), 3v button battery and 47uH inductor, but the LED won't light up. I don't know what I'm doing wrong, if I increase inductor to 1mH the LED is glowing, but not at the full power. I tried to connect red LED (1.8v, 20mA), but it glows even weaker. I don't want to change battery type as it perfectly fits in the jar and I can't use two batteries, for the same reason, they won't fit.
In summary, the goal is to make white led glow as long as possible using 3v button battery. Is it possible to make it by using yx8122 led drive? If no, then what the purpose of this IC?