Supervisor for a 3.3V rail — threshold and output type
The TPS3808G33DBVR is a single-channel simple reset supervisor from Texas Instruments, monitoring a 3.07V threshold — the typical undervoltage trip for a 3.3V supply rail. The active-low, open-drain output pulls low when the monitored voltage falls below threshold, and releases after the adjustable reset timeout period. This is the part you drop onto a 3.3V rail to hold a microcontroller in reset until the supply is stable.
Temperature range and package — board-fit check
No exposed thermal pad; the power dissipation is low enough that the standard copper land pattern suffices.
The base product number TPS3808 covers a family of fixed-threshold supervisors; this G33 variant is the 3.07V version. Sourced per RFQ — confirm current lead time and price at quote time.