Power Supplies

5V/300mA Switching Regulator with 6.5V to 72V Input Range

Recom's new high input voltage switching regulator R-78HE excels in versatility and quality for industrial 48V battery powered equipment. The R-78HE5.0-0.3 is a low-cost industrial grade switching regulator in a classic SIP3 3-pin format that will accept an input voltage up to 72Vdc (100Vdc surge) to supply a regulated 5V/300mA short-circuit protected output.

Typical applications include industrial CAN-bus systems, 36V/48V Li-Ion battery-powered equipment, off-grid solar power supplies and remote powered units with very long supply cables.

The converter will operate over an extra-wide ambient temperature range of -40°C up to +105°C without load derating and delivers a tightly regulated (+/- 1%) output with high efficiency and low ripple/noise. The R-78HE5.0-0.3 is also exceptionally reliable with an MTBF of 15 million hours and is manufactured in Recom's IATF 16949 certified factory for consistently high quality control.

Themal derating.

The exceptionally wide input voltage and operating temperature range, high MTBF, tight regulation and low quiescent current consumption of 1.5mA makes this converter suited for 36V/48V lithium-ion and 12V/24V/48V lead-acid battery-powered applications.

The 100V surge withstand capability means that external voltage clamping circuits can be eliminated and only a simple LC filter is needed for Class A and B EMC conformity.

Summary of features & specifications

  • Designed for 12V – 60V battery-powered apps
  • Wide input range (6.5V – 72V)
  • 100V surge withstand
  • -40°C to +105°C operation at 48V input, full load
  • Short circuit protected
  • Efficiency up to 83%, no need for heatsinks

Samples and OEM pricing are available from all authorized distributors or directly from Recom.

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