R-78B1.2-2.0 Recom Power

C C S S O O R R E E M M T T P P R R L L I I E E A A V V N N N N T T Efficiency up to 96%, no need for heatsinks 2A continuous output current Features Vin up to 32V DC/DC Converter Vout: 1.2V - 15V Wide operating temperature -40C to +70C at full load Switching Continuous short circuit protection Pin compatible with TO220 linear regulators Regulator R-78B-2.0 Positive to negative converter Description 2.0 Amp The R-78Bxx-2.0 series high efficiency switching regulators are ideally suited to replace 78xx linear 3 SIP3 regulators and are pin compatible. The efficiency of up to 96% means that very little energy is wasted as heat. Full power is available over a temperature range of -40C up to 70C without the need for Single Output heat sinks with their additional space and mounting costs. A high input voltage of up to 32VDC and output voltages from 1.2V up to 15V, low ripple and noise figures and a short circuit input current of typically only 50mA round off the specifications of this versatile converter series. Selection Guide Part Input Output Output Efficiency full load Max. Capacitive (1) Number Voltage Range Voltage Current min Vin max. Vin Load VDC VDC mA % % F R-78B1.2-2.0 4.75 - 32 1.2 2000 87 72 3300 R-78B1.5-2.0 4.75 - 32 1.5 2000 90 79 3300 R-78B1.8-2.0 4.75 - 32 1.8 2000 91 80 3300 R-78B2.5-2.0 4.75 - 32 2.5 2000 92 84 2300 R-78B3.3-2.0 4.75 - 32 3.3 2000 92 86 1800 2+ RoHS REACH compliant compliant 10 from 10 R-78B5.0-2.0 6.5 - 32 5 2000 94 90 820 R-78B9.0-2.0 11 - 32 9 2000 95 93 620 R-78B12-2.0 15 - 32 12 2000 96 94 470 R-78B15-2.0 18 - 32 15 2000 96 95 470 Notes: Note1: Max. cap load is tested by nominal input and full resistive load IEC62368-1 certified EN62368-1 certified EN55032 compliant CB report Model Numbering R-78B -2.0 Output Voltage Output Current www.recom-power.com REV.: 5/2021 I-1 O O P P C C R R O O M M D D O O U U C C C C E E T T R R S SR-78B-2.0 DC/DC Converter Series Specifications (measured Ta= 25C, nom. Vin, full load and after warm up unless otherwise specified) BASIC CHARACTERISTICS Parameter Condition Min. Typ. Max. 1.2Vout - 3.3Vout 4.75VDC 5Vout 6.5VDC Input Voltage Range nom. Vin= 24VDC 9Vout 11VDC 24VDC 32VDC 12Vout 15VDC 15Vout 18VDC Maximum Reverse Voltage 0V Inrush Current 2A Quiescent Current nom. Vin= 24VDC 2mA Internal Power Dissipation Vout= 1.5VDC 0.35W 0.8W Start-up time 10ms Rise Time 50s Internal Operating Frequency nom. Vin= 24VDC 460kHz Minimum Load 0% Vout 3.3VDC 50mVp-p (2) Output Ripple and Noise 20MHz BW Vout 5VDC 75mVp-p Notes: Note2: Measurements are made with a 100nF MLCC across output (low ESR) Efficiency vs. Load R-78B5.0-2.0 R-78B3.3-2.0 100 100 90 90 80 80 70 70 60 60 50 50 4.75Vin 40 40 6Vin 9Vin 6.5Vin 30 30 12Vin 12Vin 20 20 15Vin 15Vin 24Vin 24Vin 10 10 32Vin 32Vin 0 0 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 Output Load % Output Load % Efficiency vs. Input Voltage R-78B3.3-2.0 R-78B5.0-2.0 100 100 90 90 80 80 70 70 60 60 50 50 40 40 30 30 20 20 10 10 0 0 4.75 9 13 17 21 25 29 32 6.5 10 14 18 22 26 30 32 Input Voltage VDC Input Voltage VDC www.recom-power.com REV.: 5/2021 I-2 Efficiency % Efficiency % Efficiency % Efficiency %