I'd like to know, please, What's the biggest value that I can connect to PROG pin in LTC3225?
I need to charge a supercapacitor consuming 2 mA maximum.
Best Regards,
Luiz Vieira
I'd like to know, please, What's the biggest value that I can connect to PROG pin in LTC3225?
I need to charge a supercapacitor consuming 2 mA maximum.
Best Regards,
Luiz Vieira
As you have discovered, the minimum charge current on the LTC3225 is not specified. I have tried using the LTC3225 with a 750kΩ resistor at the PROG pin, and I did not get satisfactory results. The current mirror in the LTC3225 is not designed for such low currents. Unfortunately, I do not know the maximum PROG resistor value which will work.