Hello i would i am in need of a constant voltage regulator to power my motors, as voltage will affect the motors rpm. Although i could compensate via software, i would like to add a hardware deterrence.
My setup would be:
- a 7.4 volt nominal supply. This is from 2 18350 li-ions so 8.4v at full charge and 6.8v
- 4 separate motors that at peak efficiency consumes 0.5A at 7v
My target features are
- output current of 1A to 2A ( i could always use 2 or 4 if it has to be, of the same circuit)
- can output voltage from atleast 6v - 9v
- can be made using SMD components :)
- and most importantly a cut off voltage
I have seen a good one from pololu here but i going to do a single board circuit. I have tried looking for what IC pololu is using but i could not find it (i also doubt that they will tell me). I also tried searching, but i am quite overwhelmed at the extra specs manufacturer give(frequency,Iq??,etc.) and dont know which one is for me
So i guess this question boils down to - can you recomend me a good buck boost converter ic that fits my need and has decent documentation that shows a sample circuit in order for me to create.
Edit: Based on the chip and with the help of The Photon, i have made this circuit.