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Demonstration Circuit 1073 is a 100kHz-500kHz programmable frequency, high voltage, current-mode DC/DC step-down converter featuring the LT3845. The operating frequency can be synchronized up to 600kHz. The demo board is designed for 12V @ 6.25A (75W) output from a 20V to 55V input. A soft-start feature controls the output voltage slew rate at start-up, reducing current surges and voltage overshoots. The modes of operation (Burst Mode, Discontinuous Current Mode and Continuous Current Mode) are jumper selectable. Both Burst Mode and Discontinuous Current Mode increase the efficiency at light loads. Continuous Current Mode will maintain a constant switching frequency regardless of the load current.

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    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.