Designed for 12V - 60V battery-powered apps Features Wide input range (6.5V - 72V) DC/DC Converter 100V surge withstand -40C to +105C operation at 48V input, full load Switching Short circuit protected Regulator Efficiency up to 83%, no need for heatsinks R-78HE-0.3 Description 0.3 Amp The R-78HE-5.0-0.3 is a low cost switching regulator module in a compact SIP3 package that has been SIP3 specially designed for battery-powered use, but will find many other high input voltage applications. The exceptionally wide input voltage and operating temperature range, high MTBF (15 mio. hrs), tight regulation and low quiescent current consumption makes this converter ideal for 36V/48V Single Output 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. Selection Guide (1) Part Input Output Output Efficiency Max. Capacitive (2) Number Voltage Range Voltage Current min. Vin max. Vin Load VDC VDC mA % % F R-78HE5.0-0.3 6.5 - 72 5 300 83 72 470 Notes: Note1: Efficiency is tested at full load at +25C ambient Note2: Max. Cap Load is tested at nominal input and constant resistive load Model Numbering R-78HE5.0-0.3 Output Voltage Output Current Specifications (measured Ta= 25C, nom. Vin, full load and after warm-up unless otherwise stated) BASIC CHARACTERISTICS Parameter Condition Min. Typ. Max. Internal Input Filter capacitor Input Voltage Range nom. Vin= 24VDC 6.5VDC 72VDC 100VDC Input Surge Voltage 100ms max. 1.5mA 3mA Quiescent Current 5.3VDC DC-DC ON Under Voltage Lockout 5.1VDC DC-DC OFF Minimum Load 0% Internal Operating Frequency nom. Vin= 24VDC 135kHz (3) Output Ripple and Noise 20MHz BW 150mVp-p Notes: Note3: Measurements are made with a 10F MLCC across output (low ESR) continued on next page www.recom-power.com REV.: 0/2019 I-1R-78HE-0.3 DC/DC Converter Series Specifications (measured Ta= 25C, nom. Vin, full load and after warm-up unless otherwise stated) Power Dissipation vs. Load Efficiency vs. Load 0.35 100 0.30 90 80 0.25 70 0.20 60 0.15 50 0.10 40 0.05 30 20 0 0 10 20 30 40 50 60 70 80 90 100 10 Output Load % 0 0 10 20 30 40 50 60 70 80 90 100 Output Load % REGULATIONS Parameter Condition Value Output Accuracy full load 1.0% typ. / 2.5% max. 8-72Vin 1.0% typ. Line Regulation low line to high line, full load 6.5-72Vin 1.5% max. Load Regulation 0% to 100% load 1.0% typ. Deviation vs. Load 2.5 2.0 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 -2.5 0 10 20 30 40 50 60 70 80 90 100 Output Load % PROTECTIONS Parameter Condition Value Short Circuit Protection (SCP) below 100mW continuous, automatic recovery Over Current Protection (OCP) hiccup mode, 160% typ. www.recom-power.com REV.: 0/2019 I-2 Efficiency % Deviation % Power Dissipation W