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Demonstration circuit 1445A is a step-down converter, using the LTC3603EMSE monolithic synchronous buck regulator in the MSOP package. The DC1445A has an input voltage range of 4.5V to 15V, and is capable of delivering up to 2.5A of output current. The output voltage of the DC1445A can be set as low as 0.6V, the reference voltage of the LTC3603EMSE. At low load currents, the DC1445A can operate in either noise sensitive applications, due to the capability of the LTC3603EMSE to operate in pulse-skipping mode, or in high efficiency applications, because the LTC3603EMSE can also operate in Burst Mode®.