VX78 & VXO78 DC Switching Regulators CUI Inc VX78 and VXO78 Series of Non-Isolated DC-DC Converters are designed to offer a high-performance alternative to linear regulators. These non-isolated converters are pin-out compatible with linear regulators, 500mA, and 1A models. The CUI Inc VX078-500 and VX078-1000 converters are open-frame, whereas VX78-1000 and VX78-500 are encapsulated converters. Not all models require a heatsink and are ideally suited for positive and negative output applications. These DC switching regulators deliver efficiencies up to 96%, 4.75V to 36V wide input voltage, and low ripple and noise.