R w a A r E r Efficiency up to 91%, no need for heatsinks Features Pin-out compatible with LM78XX linear regs. DC/DC Converter Low profile (L*W*H=11.6*8.5*10.4mm) Wide input range (7V - 28V) Switching Short circuit protection Regulator R-78E-1.0 IEC/EN60950-1, Am2 certified Description 1.0 AMP 3 The R-78E series is a switching regulator module that has been designed to offer all the advantages of a SIP3 switching regulator (high efficiency, wide input range, accurate output voltage regulation) but with a low cost for production quantities. Due to the R-78Es high efficiency of up to 91% at an output voltage of 5V/1A at the output, no heat sink is required. The compact TO- 220 compatible SIP3 package measures Single only 11.6 x 8.5 x 10.4 mm, so it saves precious board space. The warranty is 3 years. Output Selection Guide Part Input Output Output Efficiency Max. Capacitive Number Voltage Range Voltage Current typ min Vin. Load VDC VDC mA % F R-78E3.3-1.0 7 - 28 3.3 1000 87 220 R-78E5.0-1.0 8 - 28 5.0 1000 91 220 Specifications (measured at ta= 25C, full load, nominal input voltage and after warm-up) BASIC CHARACTERISTICS Parameter Condition Min. Typ. Max. 3.3V 7VDC Input Voltage Range 24VDC 28VDC 5.0V 8VDC Input Current min. Vin 1.5mA 1000mA No Load Input Current typ. Vin 1.5mA Operating Frequency Vin= 12VDC 330kHz IEC60950-1 certified typ. Vin, full load and 20MHz BW limited 120mVp-p Output Ripple and Noise EN60950-1 certified Efficiency vs. Load R-78E3.3-1.0 R-78E5.0-1.0 100 100 95 95 90 90 85 85 80 7V 8V 12V 12V 80 75 24V 24V 28V 28V 70 75 0 0.2 0.4 0.6 0.8 1.0 0 0.2 0.4 0.6 0.8 1.0 Output Current A Output Current A www.recom-power.com REV.: 4/2017 I-1 a Y n t 3 y Efficiency % Efficiency % R-78E-1.0 DC/DC Converter Series Specifications (measured at ta= 25C, full load, nominal input voltage and after warm-up) REGULATIONS Parameter Condition Value Output Voltage Accuracy 3% typ. / 5% max. Line Voltage Regulation low line to high line, full load 1% max. Load Voltage Regulation typ Vin. and 10% to 100% load 1.5% max. PROTECTIONS Parameter Condition Value Short Circuit Protection (SCP) automatic recovery Over Current Protection (OCP) 100% = 1A 200% Load ENVIRONMENTAL Parameter Condition Value Operating Temperature Range natural convection and with derating (see graph) -40C to +85C Humidity non-condensing 95%, RH max. 3 MTBF MIL-HDBK 217F, +25C 3875 x 10 hours Derating Graph 100 80 60 40 20 0 -40 0 20 40 60 80 100 85 Ambient Temperature C SAFETY AND CERTIFICATIONS Certificate Type (Safety) Report / File Number Standard Information Technology Equipment, General Requirements for Safety (LVD) LVD1603123 IEC/EN60950-1, 2nd Edition, Am2:2013 EMC Compliance Condition Standard / Criterion Information technology equipment - Radio disturbance characteristics - Limits and with external filter EN55022, Class A or B methods of measurement EMI Filter suggestion Class A and B L1 +V +V R-78Exx-1.0 IN OUT C1 C2 GND GND MODEL C1/C2 L1 Class A 10H 1210 10F, 50V MLCC Class B 33H I-2 REV.: 4/2017 www.recom-power.com Output Power %