Two questions on the LM2623:
System requirements: Input source = 2AA batteries in series. --- Output = 7.5V, 5mA Max.
Q1) I ran through the design calculations and used the on line tool to calculate the inductor value. It gave me a result around 1mH which is a LOT bigger than the 4.7uH in all the reference designs. I assume this is because our output current is so much lower? Is this correct?
Q2) what would the efficiency of this circuit be and what should the values of R104 and C106 be to optimize this?
I can send the schematic to your email as I don't want to post it here.