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Topic: Ultra small DC-DC Stepdown module (Read 273 times) previous topic - next topic


Hi Everyone,

I recently bought a number of very small DC-DC stepdown modules

Normally these modules have 4 connectors: In+/In- and Out+/Out-
This one does have four connectors, labeled as

VO+, GND, -IN+ and EN

Does anyone know what the EN stands for and how I should connect this module?



EN stands for enable, you need a high on it to turn it on.  Check your module can be anywhere from 3-5v depending on how it's set up.
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Usually EN inputs have a pullup resistor, so you ground them to turn the output OFF. Otherwise leave it unconnected.


VO+ = volt out +

 GND =  shared for volt in and out

IN+ = volt in +

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