Hi,
I have designed a Li ion battery charger circuit around BQ24200. This IC doesn't provide current regulation and the datasheet suggest that the power supply should not be rated for more than 500mA. This 500mA is the current limit for the internal switch.
But the supply that I use is rated for 5V -3A.
Can you suggest any current imiting circuit using discrete transistor or mosfets.
If I add LM317 in cosntant current mode (limiting it to 500mA) between the supply and the charger IC will it work?
thanks,
AK