What I'm trying to achieve: miniaturized light-up wearables, using coin cell batteries (so that I don't have to run wires to a battery pack) and LEDs. I've actually gotten this to work with LEDs that require 3+ volts before (i.e., white and blue), but from what I can tell, that shouldn't have worked for more than five minutes (since the battery only puts out maybe 3.1 volts, when it's fresh), and I'd like to know how to do this the optimal way.
I've seen boost converter ICs that look like they might kinda do something to boost up the battery voltage to suit the LED? But most of them seem to require me to do differential equations and/or add about five more things to my board in addition to the IC itself.
I understand that I can't expect much in the way of battery life, since a CR2032 or similar battery isn't intended for anything remotely close to this use case. However, it only needs to stay lit for a few hours.
Any suggestions?
For reference, this is what I've achieved so far - just four LEDs in parallel, a 1025 coin cell battery, and a switch.
I've seen boost converter ICs that look like they might kinda do something to boost up the battery voltage to suit the LED? But most of them seem to require me to do differential equations and/or add about five more things to my board in addition to the IC itself.
I understand that I can't expect much in the way of battery life, since a CR2032 or similar battery isn't intended for anything remotely close to this use case. However, it only needs to stay lit for a few hours.
Any suggestions?
For reference, this is what I've achieved so far - just four LEDs in parallel, a 1025 coin cell battery, and a switch.