In summary, the features of the MEF1 series start with a post-regulated design which relies on a well-regulated input. The MEF1 series employs LDO post-regulation, rather than a fully-regulated topology. This integral LDO provides tight regulation, with low output noise and improved ripple rejection. MEF1 devices exhibit high efficiency across the full load range, a direct consequence of Murata’s proprietary ME series topology. High efficiency equates to lower system power consumption, and enables higher reliability, lower operating costs, and simplified thermal management. The devices are designed for compliance with the UL60950 safety standard, with 1kV and 3kV isolation ratings. The MEF1 series operates over the industrial temperature range of -40°C to 85°C, without derating, and is able to support convection-cooled operation in demanding environments. The industry-standard package allows alternate sourcing and drop-in replacement of unregulated modules, and is RoHS compliant.