Typical Size 6,4 mm X 9,7 mm www.ti.com TPS54680.
TPS54680-Q1 - 6-A OUTPUT TRACKING SYNCHRONOUS BUCK PWM SWITCHER
TPS54680 - 6-A OUTPUT TRACKING SYNCHRONOUS BUCK PWM SWITCHER
TPS54680-EP - 6-A OUTPUT TRACKING SYNCHRONOUS BUCK PWM SWITCHER