dc1578a-a DC1578A-A DC1578A-A LT3695EMSE-3.3 Demo Board | Fault-Tolerant, 4.5V ≤ VIN ≤ 36/60V, VOUT = 3.3V @ 1A Demonstration circuit 1578A-A is a micropower monolithic step-down DC/DC switching regulator featuring the fixed 3.3V output LT3695-3.3. The demo board operates from 4.5V to 36V and can withstand input voltage transients up to 60V. It provides 3.3V @ 1A at its output. The LT3695 family tolerates adjacent pin shorts or an open pin without raising the output voltage above its programmed value.