This highly integrated buck-boost IC offers the following features: a simplified external circuit consisting of only an input capacitor, output capacitor and inductor, and no compensation is needed. High configurability of eight peak input current settings ranging from 5 to 250mA and eight output voltage settings ranging from 1.8 to 5V. A simple hysteretic burst-only architecture, an integrated coulomb counter, peak current and zero current operation. The device also features a 1.8 to 5.5V input voltage operating range, at up to 50mA output current, with up to 90% efficiency, and only 680nA total quiescent current.