an integrated circuit for supplying power includes an ic chip having a rectangular shape and having a first edge and a second edge opposite the first edge , a switching regulator implemented on the ic chip and having a driver transistor whose on time of switching is controlled to adjust an output voltage of the switching regulator , and a series regulator implemented on the ic chip , wherein the driver transistor of the switching regulator is positioned near the first edge , and the series regulator is positioned near the second edge .