What the TPS3106E09DBVR does on the board
This part is used in systems where a low-voltage core (e.g., 0.9V or 1.0V DSP or FPGA core) needs a clean power-on reset and brown-out protection.
0.86V threshold — why that number matters
The 0.86V reset threshold is set for monitoring sub-1V supply rails, common in modern low-power processors, FPGAs, and memory controllers. If your design uses a 0.9V or 1.0V core supply, this supervisor triggers a reset when the rail droops to 0.86V, which is typically below the minimum operating voltage of the load. The open-drain output lets you wire-OR the reset signal with other supervisors or a manual reset button on the same line.
65ms reset timeout — the hold-off window
The 65ms minimum reset timeout gives the power supply time to settle and the core to stabilize before the processor or FPGA is released from reset. This is a fixed, non-adjustable delay, so verify it is long enough for your supply's ramp-up time. If your rail takes longer than 65ms to reach regulation, you may need an external delay or a supervisor with a longer timeout.
Temperature range and package for the BOM
The SOT-23-6 package is a small, surface-mount footprint that fits tight layouts.
It is ROHS3 compliant.