Fixed 3V rail at 800 mA — what it buys the design
The TPS62698YFDT delivers a fixed 3V output from a 2.3V to 4.8V input rail, sourcing up to 800 mA continuous. The 3 MHz switching frequency lets the designer use a 1 µH inductor and 10 µF output capacitor, keeping the total solution area under 15 mm². Synchronous rectification eliminates the external Schottky diode, reducing BOM count and improving efficiency above 90% at moderate loads.
6-DSBGA package — layout and rework considerations
The 6-DSBGA (0.4 mm pitch, 0.8 mm × 1.2 mm body) requires a solder-mask-defined pad with a 0.25 mm diameter NSMD pad per the TI application note. The reflow profile must peak at 260°C with a ramp rate below 3°C/s to avoid die cracking.
The 3 MHz switching frequency keeps the ripple within the 10 mV range, making it compatible with noise-sensitive loads like RF transceivers or sensor analog front-ends.