I have designed a charging circuit utilising the BQ2002 and LM317 for 2x 1.2V NiMH batteries, and it is to be charged using a 5V USB input, I need the output current to be between 550 mA and 1A. I have no idea how to control the charging current.
I need some guidance on how to achieve this.
Thanks in advance
P.S: Sorry for the '9V' +VE and the missing 'LM317' reference in the schematic below.