dc1877a DC1877A LTC3630AEDHC Demo Board (DFN) | Sync Buck, 4V ≤ VIN ≤ 76V, VOUT = 5V/3.3V/1.8V/Adj @ 500mA Demonstration circuit 1877A is a 500mA output DC/DC power supply featuring the LTC3630A (DFN package), with 4V to 76V input range. The LTC3630A features high efficiency Burst Mode® operation and includes internal high and low side power switches. The board provides jumper selected output voltages of 1.8V, 3.3V, 5V and an option for additional voltages. LTC3630A has internal soft-start and a provision for increasing soft-start time. DC1877A