Murata Power Solutions 78xxSR Series High-Efficiency Switching Regulators

The Murata Power Solutions 78xxSR Series High-Efficiency Switching Regulators represent contemporary, hassle-free replacements for outdated and inefficient LM7805 and LM7812 linear regulators. Designed as direct drop-in substitutes, the 78XXSR series maintains pin and size compatibility with the industry-standard TO-220 SIP packages. Operating at a 260kHz switching frequency, these regulators achieve remarkable efficiencies of up to 95%.Operating at full load (up to 0.5A) from 9V, 12V, 24V, or 36V supplies at ambient temperatures up to +70°C, they eliminate the need for heat sinks, temperature derating, forced-air cooling, and external capacitors. The 78SR switching regulators outshine their linear counterparts with enhancements such as lower quiescent current, increased input voltage capacity (40V vs. 32V), and improved output accuracy (±2% vs. ±5%). These collective features position 78SR regulators as the ideal choice for both new applications and upgrades to existing LM7805 and LM7812 setups, particularly those demanding full-load operation at elevated voltages.