DC1750A

DC1750A demonstration circuit is a 42V, 2.5A micropower synchronous step-down regulator with current sense featuring the LT®8611. The LT8611 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 2.5μA of quiescent current when output is regulated at 3.3V. Top and bottom power switches, compensation components and other necessary circuits are inside of the LT8611 to minimize external components and simplify design. The demonstration circuit has output current limit set at 2.5A by default. The current limit can be moved to the input side for application where input supply current is limited, such as energy harvesting application. ICTRL and IMON on the board set and monitor the regulated current respectively. The SYNC pin on the demo board is grounded by default for low ripple Burst Mode® operation. To synchronize to an external clock, move JP1 to SYNC and apply the external clock to the SYNC turret.

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