Micro-power voltage detector uses 1 μA
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By
Graham Prophet
With a detection voltage level range of 1.2V to 5.0V in 0.1V steps, the APX803L provides a threshold accuracy of ±1.5%, while consuming 1 μA and requiring no external components. Whenever the monitored VCC power supply rail drops below the chosen threshold, the APX803L asserts a reset signal within 20 μsec that is held until the supply rail recovers to a level above the threshold. The device’s reset pin provides an open-drain, active-low output with device ordering options that allow for delay times of 0 msec, 55 msec, 220 msec, or 450 msec.
Available in 3-pin SOT23, SOT323, and SC59 packages and a 5-pin SOT25 package, the APX803L supports drop-in replacement and original designs, for $0.09 (3000).
Diodes Inc.; www.diodes.com
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