What does the 2.79V threshold mean for your rail?
The TPS3836H30DBVT is a single-channel voltage supervisor that asserts a reset when the monitored supply drops below 2.79V. That threshold is set for a 3.0V or 3.3V rail — it trips before the downstream MCU or logic enters an undefined state, giving the processor time to hold off writes or park the bus.
Temperature range and package rework
Housed in SOT-23-5 (SC-74A), the five-pin package is hand-reworkable with a standard hot-air station — the small thermal mass means it lifts clean at 300°C with a gentle air flow.
Active production — no last-time-buy rush
The base product number TPS3836 covers multiple threshold options, so verify the H30 suffix (2.79V) matches your rail before committing.
How it compares to the TLV803 family
The TLV803ED29DBZR is a functional peer with a 2.93V threshold and 33ms minimum reset timeout, but its output is open-drain — you must add a pull-up resistor. The TPS3836H30DBVT's push-pull output saves that resistor and its 10ms minimum timeout is adequate for most MCU power-on sequences. The TLV803EA29VDBZR extends the timeout to 130ms minimum for systems that need a longer hold-off, but again uses open-drain output. If your design already has a pull-up, either TLV803 variant works; if you want a cleaner BOM, the TPS3836H30DBVT is the direct fit.