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.
Even so, if you do wish to run this boost converter continuously, the quiescent current of the LTC3525D is just 7ua, which is much lower than any of the other boost converters I've looked into.
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|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||83|