The TPS61372YKBT is a synchronous step-up (boost) converter from Texas Instruments, delivering a single adjustable output up to 16V from a 2.5V to 5.5V input. The integrated 3.8A switch sets the real-world output power: from a 3.6V Li-ion cell, you can pull roughly 12W before hitting the switch current limit, making it suitable for powering 12V sensor rails, USB-C power delivery, or multi-LED backlight strings from a single cell. Switching at 1.5MHz keeps the inductor small — typically a 1µH to 2.2µH shielded type — while the synchronous rectifier holds efficiency above 90% across most of the load range, especially important when the load drops below 100 mA in battery-powered equipment.
16-DSBGA — footprint and assembly reality
The 16-DSBGA package (0.4 mm pitch, 0.25 mm ball diameter) demands a controlled assembly process: a 100–125 µm solder-paste stencil, nitrogen reflow, and X-ray inspection are standard. It is not a hand-solder or rework-friendly package — plan for a pick-and-place line with a vision system. The small footprint (roughly 2.0 mm × 2.0 mm) saves board area but requires a 4-layer PCB with a solid ground plane under the device for thermal management. The 125°C junction rating means the thermal pad on the DSBGA must be connected to a copper pour of at least 300 mm² on the inner layer to keep junction temperature within limits at full 3.8A switch current in a 85°C ambient.