What the 6 MHz switching buys you on the board
The TPS62660YFFT is a 6 MHz fixed-frequency synchronous buck regulator from Texas Instruments, delivering a fixed 1.8V output at up to 1A from a 2.3V to 5.5V input rail. The 6 MHz switching rate is the key enabler for small external inductors and capacitors — typically a 1 µH inductor and 4.7 µF output cap fit the bill, keeping the total solution footprint tight for portable or space-constrained boards. The fixed output voltage (1.8V) means no feedback divider resistors are needed — the output is set internally, which simplifies the layout and removes two resistors from the BOM.
Package and assembly reality: 6-DSBGA
The 6-DSBGA package (6-bump wafer-level chip-scale) measures approximately 1.3 mm × 0.9 mm — the bumps are on a 0.5 mm pitch. This is a direct-attach package with no leads; the solder bumps connect to the PCB pads. The small size is an advantage for miniaturised designs, but the package requires a solder-paste stencil with precise aperture alignment and a reflow profile matched to the bump alloy. The rework lab should have a hot-air nozzle that covers the package without overheating adjacent components. Because the package has no exposed thermal pad, heat dissipation relies on the PCB copper plane under the bumps.
The part is ROHS3 compliant. Cut tape quantities are also available for prototyping.