Featuring an integrated heatsink, Linear Tech’s LTM4634 triple-output step-down micromodule (µModule) regulator provides full current on all three outputs (5, 5, and 4 A)—more than 70 W of output power at 65ºC ambient with 200-FLM airflow. The regulator, combined with just 13 ceramic capacitors and three resistors in a 15- by 15- by 5.01-mm ball-grid array, fits within 4.5 cm2 on a dual-sided printed-circuit board. Also included are three dc-dc controllers, power switches, inductors, and compensation.