Analog Devices’ LT4356 Surge Stopper provides a more efficient and compact solution for continuous operation, while enabling the use of lower cost, low voltage DC/DC converters downstream. With its wide operating input voltage range of 4V to 80V, it can provide uninterrupted power when subject to both cold-crank and load-dump conditions in harsh automotive environments. The LT4356 is able to pass power efficiently at 4V with virtually no voltage loss, adding no extra burden to the DC/DC design.