SMT dc switching regulator offers 96% efficiency

The newly introduced V78XX-500-SMT series, a surface mount version of the 0.5 A V78XX-500 dc switching regulator, offers efficiencies to 96% and is designed to be a high performance alternative to linear regulators. Yet unlike linear regulators, the V78XX-500-SMT series does not require a heat sink, making it suitable for applications where board space is at a premium and energy efficiency is a concern.

The regulator measures just 15.24 x 8.50 x 7.00 mm. A wide input range is available from 4.5 to 28 Vdc and regulated output voltages of 3.3, 5, 12, and 15 Vdc are offered. Output current is 500 mA with an operating temperature range of -40° to 71° C at 100% load, derating to 60% load at 85° C. The converters offer short circuit protection, thermal shutdown, very low ripple and noise (10 mV p-p typical), and an MTBF of 2 million hours. The V78XX-500-SMT series is offered by V-Infinity, a division of CUI Inc.