The ADP3088 is a high frequency, nonsynchronous PWM stepdown dc-to-dc regulator with an integrated 1 A power switch in a space-saving MSOP-8 package. It provides high efficiency and excellent dynamic response and is very simple to use. The ADP3088's 1 MHz switching frequency allows for small, inexpensive external components, and the current mode control loop is simple to compensate and eases noise filtering. The device operates in PWM current mode under heavy loads and saves energy at lighter loads by switching automatically into power saving mode. Soft start is integrated completely on-chip, as is the cycle-by-cycle current limit.