2V to 5.5V input — what it means for a portable BOM
The Texas Instruments TPS65154RSLR is a power management IC built for portable equipment where the supply rail can sag from a near-full 5.5V down to 2V as the battery drains. That 2V floor is the real constraint — it tells you the IC keeps regulating when a single Li-ion cell is deep into its discharge curve, not just at the nominal 3.7V.
48-VQFN (6x6) — footprint and thermal
Surface-mount only — no through-hole option. The QFN pitch requires a solder-paste stencil aperture that matches the pad geometry.