What the TPS63027YFFT Does in Your Power Rail
The TPS63027YFFT is a buck-boost regulator from Texas Instruments that delivers a regulated output from an input voltage that can be above or below the output — 2.3 V to 5.5 V in, adjustable output from 1 V up to 5.5 V. It handles 2 A continuous output current at 2.5 MHz switching frequency, which keeps the external inductor small — typically 1 µH to 2.2 µH — and the output ripple manageable.
Input Range and Output Flexibility
The 2.3 V minimum input lets it run from a single Li-Ion cell down to near depletion; the 5.5 V maximum covers USB and 5 V regulated rails.
Package Reality for the Board Designer
The 25-DSBGA package is a 0.4 mm pitch BGA — roughly 2.2 mm × 2.2 mm.
It is ROHS3 compliant.