Three-rail supervisor for ATX and industrial PSUs
The Texas Instruments TPS3510DG4 is a multi-voltage supervisor that monitors three supply rails — 3.3V, 5V, and 12V — and asserts an active-low reset output when any monitored voltage falls below its threshold.
200 ms reset timeout and open-drain output
The reset output stays low for a minimum of 200 ms after all monitored voltages rise above their thresholds, giving the downstream rails time to stabilise before the system microcontroller or FPGA exits reset.