Switching regulators drop in to save BoM without compromise

Mornsun’s high-efficiency, low cost of K78xxJT-500R3-LB and K78xx-500R3-LB series switching regulators have been introduced by Relec Electronics. The K78-LB family is available in a choice of mounting options and offers engineers reliable models for price-sensitive, high volume, high efficiency applications.

Both families feature input ranges up to 36V DC and outputs from 3.3 to 15V. Operating temperatures range from -40 to +85°C and efficiencies are up to 95% with no requirements for additional heatsinks, even when operating at +85°C.

They also have low ripple and low noise operation (typically 50mV pp) and a MTBF of >2,000,000 hours. All models have short circuit protection as standard, the K78xx-500R3-LB additionally has negative output capability. All regulators are RoHS-compliant.

The compact switching regulators are supplied in an industry-standard SIP3 package. They are pin-compatible with LM78xx linear regulators and can be used as direct replacements. The K78xxJT-500R3-LB series buck converters are in a 12.00 x 12.00 x 4.50mm surface mount package and can be supplied either in tubes or tape and reel.

The K78xxJT-500R3-LB and K78xx-500R3-LB series switching regulators are said to be ideal for cost-sensitive, space-constrained applications which demand reliable non isolated DC-DC conversion, for example instrumentation, robotics, street lighting and the IoT.

Critically, for today’s fast-paced development cycles, the K78xxJT-500R3-LB and K78xx-500R3-LB are available with lead-times of four to six weeks in volume, and with what Relec says is benchmark pricing.