What this PMIC does in a portable system
The Texas Instruments TPS658610ZQZT is a power-management IC targeting battery management, display LED drivers, and general power-supply functions in handheld and mobile devices.
Package reality: small BGA, not a field-swap part
Housed in a 120-VFBGA (6x6 mm Microstar Junior), this is a fine-pitch BGA — no socket, no hand-soldering. Rework needs a hot-air station and a stencil; moisture sensitivity level pre-bake may be required before reflow if the parts have been exposed. Surface-mount only; the 0.50 mm ball pitch demands a 4-layer PCB for fan-out. Not a part you swap in a parking lot — plan for board-level rework at a bench.