The high efficiency K78Uxx-500R3 series of switching regulators have been designed by Mornsun and are said to be ideal for use in space constrained and cost-conscious designs. The switching regulators are available from Relec Electronics, and are offered with a wide input range of 9.0–90V DC and with outputs ranging from 3.0–24V DC.
Efficiency is up to 93% to minimise heat loss through dissipation. It also means that heatsinks are not required, resulting in space savings and reduced mounting costs.
The seven non-isolated DC-DC converters in the series range from 1.65-12W, depending on the model. Each version is also available with a 90 degree pin formation (denoted with an L suffix). Characteristics include low ripple and low noise operation, with a MTBF of greater than 2,000,000 hours. Operating temperature is -40 to +85°C and all models have short circuit protection and thermal shutdown safety functions. They are also RoHS-compliant.
The K78Uxx regulators are supplied in a SIP3 package and are pin-compatible with the LM78xx linear regulators and can be used to directly replace them.
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