LT3905 Sipm Design Review

Your approach seems sensible. Just know the Fsel tied to ground will lock you into a 1MHz switching frequency.

Now, since you intend to use this part as a simple boost, know you will only have a few mA of load current at your disposal. If you need more, it would be better if you used a different part without all the APD functionality, and with much more power to suit your needs. 

If you need more than a few mA of load current, consider LT8330, LT8570, LT9570-1, LT8580.

Best Regards,

DV

Your approach seems sensible. Just know the Fsel tied to ground will lock you into a 1MHz switching frequency.

Now, since you intend to use this part as a simple boost, know you will only have a few mA of load current at your disposal. If you need more, it would be better if you used a different part without all the APD functionality, and with much more power to suit your needs. 

If you need more than a few mA of load current, consider LT8330, LT8570, LT9570-1, LT8580.

Best Regards,

DV

Current is no problem. The simp does not need current at all. Worst case scenario is a very large light pulse on the sipm, which would result in a 150uA current spike for around 50ns, i'm sure the capacitors will get most of it.