Demonstration circuit 1451A is a Buck-Boost DC/DC converter featuring the LTC3127EDD and is ideally suited for pulsed load applications where the input current needs to be limited. Demonstration circuit 1451A is configured for 1.0A maximum input current limit and can handle pulsed load currents of up to 2A, with duty cycles of up to 15%. The input voltage range is 1.8-5.5V. The fixed input current limit can be adjusted by replacing one resistor (R6). The LTC3127 datasheet gives a complete description of the part operation and application information and must be read in conjunction with this quick start guide for demo circuit 1451A.