Hello
I'm designing a wearable using DA14580. It has just a button, a LED, and a small vibrating motor. I want the design to be as small as possible. Since I'm new using DA14580 i was using some reference designs as guide. I noticed that they use a coin cell to power the circuit. The CR2032 is too big (20mm diameter) for my circuit. I found a Li Po battery (20mm x10mm) which fits perfectly. The problem is that those batteries give ~3.7V and according to the datasheet the DA14580 max input is 3.3V. I was hoping you could tell me about a small rechargeable i could use instead of the coin cell.
Vrabo
Thank you
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Hi vrabo,
I am not able to recommend any rechargable battery smaller that the CR2032 since in most of our designs a CR2032 coin cell is used and none of them was rechargable, a smaller battery (BR1225) is used in the IoT reference design, not rechargable though. You should be able to find some options for a 12.5mm rechargable batteries at 3V on digikey.
Thanks MT_dialog