ISL91127I Series 3.3 V 2 A High Efficiency Buck-Boost Regulator - QFN-20
Conv DC-DC 1.8V to 5.5V Step Down/Step Up Single-Out 3.3V 4.5A 20-Pin QFN EP T/R
DC/DC CONV, BUCK-BOOST, 2.5MHZ, QFN-20