The TPS62088YFPR is a 3 A continuous-rated synchronous buck converter from TI's DCS-Control™ family, switching at 4 MHz. Input range is 2.4 V to 5.5 V, output is fixed (the fixed voltage isn't listed here, but the part number suffix tells the story — confirm the exact output from the marking or the full datasheet). The synchronous rectifier means no external Schottky diode, which saves a component and a placement pick.
Thermal and layout — the DSBGA gotchas
The 6-DSBGA package (6-XFBGA, DSBGA) is 0.9 mm × 1.3 mm typical — smaller than a grain of rice. That's the feature, but it means the copper pad under the device is the only thermal path. The junction temperature rating goes to 125°C, so you need a solid via array under the package to pull heat into an inner ground plane. Without that, the part hits thermal shutdown well below the rated output. Surface-mount only. The 0.5 mm pitch BGA demands a solder stencil with 0.25 mm apertures and a reflow profile tuned for lead-free SAC305. If your assembler isn't comfortable with 0.5 mm BGA, this part will be a rework headache.