TPS63020DSJR

TPS63020DSJR is the tape-and-reel VSON-14 ordering code for the Texas Instruments TPS63020 buck-boost converter, listed by TI as Active. It accepts a 1.8 V to 5.5 V input, regulates against a 495 mV to 505 mV feedback reference (500 mV typical), switches at 2200 kHz to 2600 kHz (2400 kHz typical), limits average switch current between 3500 mA and 4500 mA (4000 mA typical), and draws 25 µA typical and 50 µA maximum quiescent current. One temperature distinction matters for qualification paperwork: the -40 °C to +125 °C range in the ordering appendix is a junction-temperature rating, while the rated ambient range is -40 °C to +85 °C - the two are not interchangeable. The selection point is a rail that holds regulation across the whole battery discharge curve: single-cell lithium and multi-cell packs cross the output voltage as they drain, and a buck-boost keeps the rail constant through the crossover where a plain buck or boost would drop out. Selection advice: confirm the DSJR code and the VSON-14 land pattern against the layout, and derate sustained load current by the ambient rating and board thermal performance rather than the junction figure. Parameters verified against the TI TPS63020 datasheet SLVS916 Rev. I (ordering appendix and electrical characteristics).