DC2202A

DC2202A is a LT8640 42V, 5A micropower synchronous step-down silent switcher demonstration board. Demonstration circuit 2202A is a 42V, 5A micropower synchronous step-down Silent Switcher® with spread spectrum frequency modulation featuring the LT®8640. The demo board is designed for 5V output from a 5.7V to 42V input. The wide input range allows a variety of input sources, such as automotive batteries and industrial supplies. The LT8640 is a compact, ultra-low emission, high efficiency and high speed synchronous monolithic step-down switching regulator. The integrated power switches and inclusion of all necessary circuitry reduce the components count and solution size. Special silent switcher architecture minimizes EMI/EMC emissions. Selectable spread spectrum mode can further improve EMI/EMC performance. Ultralow 2.5μA quiescent current in Burst Mode® operation achieves high efficiency at very light loads.

• Switching frequency of 2MHz(typ) at TA = 25°C
• Efficiency at DC of 93.7% at TA = 25°C, VIN = 12V, IOUT = 3A

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