Hello,
I want to both charge a battery and power my system (which needs 5V 2A) from a wall adapter (5V)
Ideally, i would like to use 9V NiMh battery but I didn't found any easy scheme with only few parts to do the job.
So, my other option is to use a 3V7 li-ion battery. There is some options using PowerPath devices but the output is only at the battery voltage. So I think that a PowerPath IC + step-up converter could be a good option. Am I right ? What devices could be nice for this job ?
Thank you
Best regards