0.7V startup, 2.5V fixed rail — single-cell boost decision
The TPS610992YFFT from Texas Instruments is a synchronous step-up (boost) converter delivering a fixed 2.5V output from an input range of 0.7V to 5.5V. The 800 mA switch current rating sets the practical output current ceiling — at 2.5V out from a 1.2V input, expect around 300-350 mA continuous before the switch limit bites.
Package and temperature — board-fit constraints
Housed in a 6-bump DSBGA package, the TPS610992YFFT is a wafer-level chip-scale device. The bumps require a controlled solder-paste stencil and a reflow profile tuned for lead-free assembly.
No official second-source or cross-reference is listed, so the BOM is single-sourced to this TI device.
