Hello all
I have a project that I want to run off of a Lithium Ion Battery - 2Ah and my overall current is around half an amp. The biggest draw is a laser module that is pulling around 250 to 300 mA and a voltage of 3-3.7. Then I have some led’s and basic circuitry all low current but needs 5v.
I have the 5v side figured out, I was gonna use either Spark Fun’s Lipo Charger/Booster or Adafruit’s PowerBoost 1000 Charger - Rechargeable. Which has all the protection I need.
So my question is the Laser, (Please excuse some ignorance most of my circuity knowledge is self taught along side the university of youtube), originally I was thinking of adding Adafruit’s LM3671 3.3V Buck Converter to the 5v supply after the boost up from the battery but this seams inefficient. I was also thinking of connecting directly to the battery with a mosfet from the logic side of things for control but I still would like to protect the battery. I cannot seam to find a circuit that does just this for a 3-3.7 v. Most things I find boost to 5v that also protects the battery.
Final question, does anyone know how i can protect two different Boost circuits to the battery? (Adafruit PowerBoost 500/1000 and possably Spark fun’s Boost converter set for 3.3v)
Final Final Question, Gladly take any advice to make this simpler?
Thank you in advance for you time!