DC2468A

Demonstration circuit 2468A is a 65V, 8A micropower synchronous step-down second generation Silent Switcher® with spread spectrum frequency modulation featuring the LT8645S. The demo board is designed for 5V output from a 5.6V to 65V input. The wide input range allows a variety of input sources, such as automotive batteries and industrial supplies. The LT8645S is a compact, ultralow emission, high efficiency and high speed synchronous monolithic step-down switching regulator. The integrated bypass capacitors optimize all the fast current loops and make it easier to minimize EMI/EMC emissions by reducing layout sensitivity. Selectable spread spectrum mode can further improve EMI/EMC performance. Ultralow quiescent current in Burst Mode® operation achieves high efficiency at very light loads. Fast minimum on-time of 40ns enables high VIN to low VOUT conversion at high frequency.

• Switching frequency of 2MHz(typ) at TA = 25°C
• Efficiency of 93.8% at TA = 25°C, VIN = 12V, IOUT = 4A

Notes

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