Posted on Oct 11, 2012

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.

Click here to download the full size of the above Circuit.

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

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