There is no push-pull version of the ADCMP380 and no exact replacement option as well. But you may want to check these push-pull comparators also by Analog Devices: ADCMP356, ADCMP371, ADCMP380.
ADCMP356 has 0.6V on-chip reference and…
It looks like you need a couple of comparators. You will have to set them up to control one or the other LED and or turn on a power supply for the LEDs. Let me know if you have specific questions about the parts.
The ADMP356 may be useful
i think i understand the problem better now.
I presume the idea behind disable the buck-boost is to aviod battery discharge?
Can the PFO triggers your uC into low power mode? if so, combine with the LTC3113's burst mode, the total power…