The TPS626765YFDR is a 6 MHz fixed-output step-down converter from TI, delivering 650 mA from a 2.3 V to 4.8 V input rail. The high switching frequency shrinks the inductor and output caps to chip-scale passives, which is the whole point for a tiny DSBGA package — but that 6-DSBGA (0.4 mm pitch, no leads) means this is a reflow-only part. No lab, no bench, no hand-soldering in the field; you need a stencil, a reflow profile, and X-ray to verify the joints.
650 mA at 1.05 V fixed — load budget and dropout
Output is fixed at 1.05 V, so this is a dedicated rail for a low-voltage core or I/O — no resistor divider to tweak. The 650 mA continuous rating covers small FPGAs, MCU cores, or RF front-ends; derate for ambient above 85°C per the datasheet's thermal curves. Input range 2.3 V to 4.8 V matches single-cell Li-ion or 3.3 V/5 V regulated rails, but the 4.8 V max means no 5 V ±10 % bus without a pre-regulator.
The base product number is TPS626765, so any PCN or EOL for the family will carry that prefix — worth a watch if you are qualifying for a long-run product.