The TPS3677 is a nano-power voltage supervisor IC from Texas Instruments designed for power monitoring and reset control in ultra-low-power systems. It integrates a precision voltage detector, watchdog timer, and reset generator in a compact WSON/DSBGA package. With a typical supply current of only 400nA, it is ideal for battery-powered devices, IoT sensors, medical electronics, automotive controllers, and industrial automation systems. The TPS3677 features programmable watchdog windows, reset delay options, and adjustable threshold voltages, ensuring reliable protection against undervoltage, system hang-ups, and brownout conditions.