This is an interesting boost converter for motes because most of the time your mote could be sleeping or doing light work with a battery's voltage/current passed directly through to the mote, but on those occasions where you might need more voltage/current than your battery would volunteer on its own, you can have your micro-controller turn on this boost converter. Or perhaps it could scavenge voltage from a super cap that would otherwise go wasted because it was too low. The point is this: by being selective in your use of the boost converter, you avoid the higher quiescent current losses that would come from constantly running a boost converter all the time.
Please order your PCBs for this project using the following link: https://PCBs.io/share/42gWk It is a more convenient way of ordering, and I will receive a 10% credit on future PCB orders, which contributes toward new development and improvements. This does not cost you anything extra, and the pcbs.io prices are lower than OSH PARK's.
|Qty||Value||Device||Package||Parts||Description||MF||MPN||Aliexpress or Ebay link|
|1||22uH||SMD Inductor with low DCR||up to 6x6mm||L4|
|1||2.2uF||X7R SMD capacitor||0603||C1|
|1||22uF||X7R SMD capacitor||1205||C2|
|LTC3525D-3.3 Breakout Board Schematic v006.pdf||4.92 kB||9|