1A switching regulators offer up to 95% efficiency, replace TI Power Trends legacy types

February 06, 2014 // By Graham Prophet
TI discontinued the production of its Power Trends switching regulators (PT78ST100, 78SR100, etc.) at the end of 2013: Recom says that many of its regulators are drop-in replacements for the through-hole packages, there were no drop-in replacements for the SMD packages.

Hence, the R-78T series: a 1:1 compatible SMD product line. This can help avoid costly re-designs for customers who are still using Power Trends switching regulators.

The compact, low profile "Open Frame" modules are based on the R-78-family; offering high efficiency of up to 95% and wide input voltage range of 7V to 42V they are suitable for portable or battery operated applications.

The R-78T series provides optional regulated 3.3V/1A, 5V/1A or 12V/1A in continuous operation, but can also handle peak currents up to 1.5A for 10 sec. The modules do not require fans or heat sinks. They can be operated reliably at temperatures between -40°C and +85°C without derating.

The 23 x 27.2 x 10mm or 23 x 29.4 x 8mm modules are pin-compatible with other 78 series SMD switching regulators and SMD TO-220 linear regulators.

RECOM Electronic GmbH; www.recom-electronic.com