Two-channel supervisor in a SOT-23-6 footprint
The TPS3806I33DBVR is a two-channel multi-voltage supervisor from Texas Instruments that monitors up to two supply rails with a fixed 3 V threshold on one channel and an adjustable threshold on the second. The active-low, open-drain output asserts when either monitored voltage drops below its threshold, with a typical propagation delay of 5 µs — fast enough to catch a supply glitch before downstream logic enters an indeterminate state. Housed in a SOT-23-6 package, it occupies minimal board area and suits compact power-sequencing or reset-generation circuits in embedded systems.
What the specs mean for the board
The open-drain output lets multiple supervisors wire-OR onto a shared reset line, which is useful when several voltage domains need to hold the system in reset until all rails are good.