The XC9281/82 is the World's Smallest 600mA DC/DC Converter. It is an ultra-small synchronous step-down DC/DC which can operate from 2.5V~5.5V.
Available in LGA-6B01 and an ultra small WLP-6-05 package, measuring only 0.96 x 0.88 x 0.33mm, an extremely small DC/DC circuit of only 3.52mm2 can be implemented with a minimal number of external components.
Because the XC9281/82 uses such small packages and external components, the PCB area and thus the length of the copper tracks is minimised which results in extremely low radiated noise and excellent EMI performance.