DC-DC converters are 78xx linear regulator drop-in swap

October 12, 2017 // By Graham Prophet
Suitable for use in in harsh environments, the OKI-78SR-E series of three terminal non-isolated DC-DC converters designed by Murata Power Solutions comprises three modules with a fixed single output voltage of 3.3V at 1.5A, 5V at 1.5A and 12V at 1A. The converters provide a cost effective, efficient alternative to a T0-220/78xx series linear regulator.

The fully encapsulated module is rated to operate from -40° C to + 85°C and can be used in almost any application where a single output of 3.3, 5 or 12V is required. The 3.3 and 5 models operate from an input range of 7V to 36V and the 12V model in the range of 15V to 36V. All models are available in either vertical or horizontal SIP mounting options using a linear-regulator-compatible pin out. The efficiency of the 12V OKI-78SR-12/1.0-W36E-C device when powered from a 24V source is > 95 % eliminating the need for a heat sink, reducing cost and complexity during the manufacturing process. Additional features include short circuit and over current protection.


Murata Europe; www.murata.com