65-V window supervisor with dual 0.8 V thresholds
The Texas Instruments TPS37A010122DSKR is a voltage detector that monitors two independent voltage rails against 0.8 V thresholds each and asserts an active-low reset when either rail drifts outside the window. The open-drain output lets you wire-OR multiple supervisors or level-shift to any logic supply up to the absolute maximum.
Reset timeout and output architecture
The reset timeout is 100 µs maximum — unusually fast for a supervisor. That means the reset de-asserts within 100 µs of the monitored voltage returning inside the window. For systems that need to restart quickly after a brownout (e.g., a motor controller recovering from a load dump), this avoids the several-hundred-millisecond delay typical of most reset ICs.
The 10-WSON (2.5x2.5) package with exposed pad requires a thermal-via stitch under the pad for heat sinking — without it the junction temperature climbs faster at high input voltage and continuous operation. Surface-mount assembly with standard reflow profile; MSL rating per the TI label.