This is a voltage regulator. No rocket science. However, provide at least a bit of a datasheet and don't make me google it. Tip: If you plan to use fixed tension pads, there is a small trace that you will need to tie to the ADJ pad that you will need to cut. Tiny. To find it I needed Google, a magnifying glass, two hands and a hunting dog. Cut off this trace and it works as expected. The EN notepad is strongly tied on the inside; Ignore it and the controller will work normally. If you ground it it seems to kill the output voltage. Depending on the input voltage, the power consumption drops to almost zero. Works great with 9V batteries in kids Halloween costume props.
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