Demonstration circuit 1167 is a monolithic step-down DC/DC switching regulator featuring the LT3685 in the MSOP-10 exposed pad package. The demo board provides 5V@2A from a 6.3V to 38V input and has transient protection up to 60V. The demo boards default switching frequency is 500kHz, but the LT3685 has a SYNC pin which allows frequency synchronization to an external clock over a 250kHz to 2MHz range.