Four-rail watchdog for automotive power trees
With four voltage monitors in a single TSOT-23-8 package, this supervisor replaces up to three discrete reset ICs or a combination of comparators and reference, saving board area and reducing component count on a power-tree board. The adjustable threshold lets you set the trip point for each rail independently via external resistor dividers, so the same base part number can be used across different ECU designs with different voltage targets. The 10 ms typical reset timeout gives downstream logic a clean power-good window without needing an external delay capacitor.