Why the extra complexity and BOM cost of the booster when you have 2xAA power source?
It's been shown that at 8mhz you can run down to 2V without any issues (even below that). Unless you're trying to avoid any "overclocking" maybe?
It was a kind of throw the kitchen sink at it to make it work after doing reading, i've been thrown in the deep end with this project - i'm a software engineer and don't develop with hardware, i've done my best but am now needing someone who knows what they're doing.
The OP is using a DHT22 sensor, it requires at least 3.3V. If the booster is only turned on when accessing that (with some voltage translation) that would reduce the average current. I'd look at a different booster type though, that LTC has 400mA peak inductor current which might cause voltage drops with depleted batteries due to increased internal resistance. It might be better to boost to 4.5V or so with a fixed on time or inrush limiting booster circuit and regulate that to 3.3V with a LDO. Or find a sensor that works down to 2V.
Mark.
The booster is supplying power to the whole circuit, and it turns the DHT22 on/off as it needs it.
I have to produce a sensor that can last at least a year on 2x AA batteries, using the RFM69HCW chip that sends temperature/humidity back every 2-3 minutes.
Is this something either of you are interested in quoting/working with me to produce something?