Single-supply-fault-monitor

  
This circuit shows a typical over/under-voltage fault monitor for a single supply. The upper trip points, controlling OUT 1, are centered on 5.5 V with 100 mY of hysteresis Wu = 5.55 V, `L = 5.45 V); and the lower trip points, controlling OUT 2, are centered on 4.5 V, also with 100 mV of hysteresis.
Single-supply-fault-monitor - schematic

OUT 1 and OUT 2 are connected together in a wired OR configuration to generate a power OK signal.




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