200 mA step-down for portable power rails
The TPS62737RGYT is a synchronous buck converter from Texas Instruments that delivers up to 200 mA continuous output from a 2V to 5.5V input rail.
2 MHz switching and programmable output
Switching at 2 MHz keeps the ripple well above the audible band and lets the output filter use a 1 µH to 4.7 µH inductor and 10 µF ceramic cap — typical for a 200 mA rail. The programmable output range from 1.3V to 5V covers common logic and sensor supplies; set the feedback divider for exactly 3.3V or 1.8V as needed. The 14-VQFN package (3.5x3.5 mm) with exposed pad helps pull heat into the PCB ground plane — the pad is the main thermal path, so a good solder joint under it matters for full current delivery at high ambient.
Sourcing is per RFQ — confirm the BOM quantity and lead time at quote.