Interesting implementation, they put a booster on a CR2032, maybe to get all the juice from that coin cell, but not sure how that makes a ton of sense in terms of added design complexity since once the coin cell drops V dramatically it won't have lots left anyway
Granted we can learn a lot from this design and its different parts but I wonder if all the complexity justifies the outcome.
I would dub a TH node as one of the most "basic" of all nodes. Typically TH does not change so much that you'd want an alert/interrupt or immediate notice so fixed periodic wakeups are perfectly acceptable and not a downside. That also produces a smooth fixed interval log/graph when looking at the data.
We've seen some uber small and "simple" TH implementations here based on the venerable 328p, from our forum resident low-power champions with only a few components and the RFM69, some coin cell powered.
Looking at this TI we see a much more complex design, just to report TH, otherwise at very low power. My feeling is this is overengineered for such a simple task, (well of course we could argue this can do anything else that a coin cell supports, not just TH). It's about tradeoffs too, if you can get away with a TPL5110, atmega328, TH sensor, coin cell, RFM69 supporting passives and not much else, that simplicity wins in front of a complex overengineered design from a top brand like TI.