great project and documentation!
I've put the circuit together on a prototype board, and i'm getting 7.6volts.
I'm trying to understand how it works in order to debug.
I downloaded n the MAX756 spec sheet, and their "typical operating circuit" has pin 1 (SHDN) floating and Pin 5 (LB1) is at +3V.
The MintyBoost schematic (without low battery indicator) has pin 1 (SHDN) at +3V and pin 5 (LB1) floating.
Anyone know why this is? Will I damage the chip if SHDN and LB1 are both pulled high?
Why is SHDN pulled up in MintyBoost and not in MAX756 specs?
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yes, that makes sense to just ignore the two LBO/I pins if I'm not using the low battery indicator.
And i finally just got it that SHDN means "shutdown". And since it has a negation line over it in the specs, going low means shutdown. So, it needs to be high.
btw, I fixed my problem with getting 7.6v out instead of 5v. pin 3 (reference voltage output) wasn't actually grounded. whoops. fixed that and it works great.
And i finally just got it that SHDN means "shutdown". And since it has a negation line over it in the specs, going low means shutdown. So, it needs to be high.
btw, I fixed my problem with getting 7.6v out instead of 5v. pin 3 (reference voltage output) wasn't actually grounded. whoops. fixed that and it works great.
Please be positive and constructive with your questions and comments.