Ultra-low-power comparator for battery-operated sense circuits
The MAX9028EBT+T: Its 4 mV built-in hysteresis cleans up noisy threshold crossings without external positive feedback, and the open-drain rail-to-rail output lets it interface directly with logic inputs at any voltage up to the supply.
Key parametrics for the BOM decision
Propagation delay is 45 µs max — fast enough for overvoltage/undervoltage detection and level sensing in battery management, but not for high-speed PWM or zero-crossing loops.