The Texas Instruments TPS658642ZQZR is a power management IC (PMIC) designed for portable equipment — think handheld instruments, battery-powered medical devices, or field-portable test gear that needs multiple regulated rails from a single battery input. The package is a 120-ball VFBGA, specifically the 6x6 mm Microstar Junior footprint — a fine-pitch BGA that demands careful PCB layout and a controlled reflow profile.
Texas Instruments has formally ended production; there is no last-time-buy window open through the authorized channel. No official successor or replacement order code is recorded for this part. Any claim of a drop-in substitute should be verified against the original TI datasheet — the pinout, register map, and power-up sequencing are unique to this device. Sourcing is through independent distribution only. Each lot should be date-code and marking verified against TI's factory records — the BGA package is a common target for re-marked or relabeled stock.
Package and footprint — the BGA reality
Two-layer boards will not route this part.