* Efficiency up to 94%, no need for heatsinks * Pin compatible with LM78XX linears * Low profile (L/W/H=11.5 x 7.55 x 10.2mm) * Wide input range * Short circuit protection, thermal shutdown * Low ripple and noise * IEC/EN60950-1 certified Features Switching Regulator DC/DC Converter R-78-1.0 Description The R-78xx-1.0 series switching regulators are ideally suited to replace 1 Amp 78xx linear regulators and are pin compatible. Efficiencies of up to 94% mean that very little energy is wasted as heat so there is no need for any heat sinks with their additional space and mounting costs. 1.0 Amp SIP3 Single Output Selection Guide Part Input Number Voltage Range [VDC] R-781.8-1.0 4.75 - 18 R-782.5-1.0 4.75 - 18 R-783.3-1.04.75 - 18 R-785.0-1.0 6.5 - 18 Output Voltage [VDC] 1.8 2.5 3.3 5.0 OutputEfficiency Current @ min Vin @ max. Vin [A] [%][%] 1.0 82 76 1.0 87 81 1.0 9084 1.0 94 89 Model Numbering R-78__-1.0 Output Voltage Output Current IEC/EN60950-1 certified EN55032 compliant Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) BASIC CHARACTERISTICS Parameter Quiescent Current Condition Min. Vin = min. to max. at 0% load Typ. Max. 5mA 7mA 0.4W Internal Power Dissipation 0% Minimum Load (1) Internal Operating Frequency Output Ripple and Noise Absolute Maximum Capacitive Load 280kHz measured at 20MHz BW 350kHz 430kHz 20mVp-p 30mVp-p 1 second start up, no external components 220F <1 second start up + diode protection circuit 6800F Notes: Note1: Operation under no load will not harm the converter, but specifications may not be met A minimum load of 10mA is recommended continued on next page www.recom-power.com REV.: 4/2019 I-1 R-78xx-1.0 DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) Ripple vs. Vin (full load) 100 50 90 45 80 40 70 35 Ripple [mV] Efficiency [%] Efficiency vs. Vin (full load) 60 50 40 30 10 0 5 7 30 25 20 15 5Vout 3.3Vout 2.5Vout 1.8Vout 20 5Vout 3.3Vout 2.5Vout 1.8Vout 10 5 9 11 13 15 0 17 18 5 7 9 Input Voltage [VDC] 100 50 90 45 80 40 70 35 60 50 40 10 0 0 10 20 30 30 25 20 10 5 40 50 60 70 80 90 0 100 0 10 20 30 90 45 80 40 70 35 Ripple [mV] Efficiency [%] 50 60 50 40 0 20 30 80 90 100 70 80 90 100 5Vout 3.3Vout 2.5Vout 1.8Vout 25 20 10 5 40 50 60 70 80 90 100 0 10 20 30 40 50 60 Output Load [%] Output Load [%] www.recom-power.com 70 30 0 10 60 15 5Vout 3.3Vout 2.5Vout 1.8Vout 0 50 Ripple vs. Load (min. Vin) 100 10 40 Output Load [%] Efficiency vs. Load (min. Vin) 20 17 18 5Vout 3.3Vout 2.5Vout 1.8Vout Output Load [%] 30 15 15 5Vout 3.3Vout 2.5Vout 1.8Vout 20 13 Ripple vs. Load (max. Vin) Ripple [mV] Efficiency [%] Efficiency vs. Load (max. Vin) 30 11 Input Voltage [VDC] REV.: 4/2019 I-2 R-78xx-1.0 DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) REGULATIONS Parameter Condition Value Output Accuracy 100% load 2.0% typ / 3.0% max. Line Regulation low line to high line, 100% load 0.2% typ. / 0.4% max. Load Regulation 10% to 100% load 0.4% typ. / 0.6% max. Transient Response 100% <-> 50% load 85mV typ. / 100mV max. PROTECTIONS Parameter Condition Value Short Circuit Protection (SCP) continuous, automatic recovery Short Circuit Input Current nom. Vin= 12VDC +Vin Optional Diode Protection Circuit GND +Vin +Vin R-78xx-1.0 +Vout +Vout 100mA max. +Vout GND +Vin +Vin GND GND +Vin R-78xx-1.0 Parameter +Vout= +Vout - 0.3V GND +Vout - 0.3V Condition GND +Vout +Vout= +Vout GND ENVIRONMENTAL R-78xx-1.0 GND GND +Vin Operating Temperature Range +Vout Optional Protection 2: GND The diode can either be fitted across the device if the source is low impedance or fitted in series with the output (recommended). R-78xx-1.0 GND Optional Protection 1: Add a blocking diode to Vout if current can flow backwards into the output, as this can damage the converter when it is powered down. +Vin Value GND with derating (see graph) -40C to +85C Maximum Case Temperature +100C Temperature Coefficient 0.015%/K Thermal Impedance 0.1m/s, vertical 70K/W Operating Altitude 2000m Operating Humidity non-condesing 95% RH max. Pollution Degree MTBF PD2 13338 x 10 hours 3880 x 103 hours +25C +71C according to MIL-HDBK-217F, G.B. 3 Derating Graph Output Power [%] 100 80 60 40 30 20 0 -40 0 20 40 60 80 85 100 Ambient Temperature [C] www.recom-power.com REV.: 4/2019 I-3 R-78xx-1.0 DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) SAFETY AND CERTIFICATIONS Certificate Type (Safety) Report / File Number Information Technology Equipment, General Requirements for Safety Standard IEC60950-1:2005, 2nd Edition + AM 2:2013 EN60950-1:2006 + AM 2:2013 1603123 EAC RU-AT.49.09571 TP TC 004/2011 RoHs 2+ RoHS 2011/65/EU + AM2015/863 EMC Compliance Electromagnetic compatibility of multimedia equipment Emission requirements ESD Electrostatic discharge immunity test Radiated, radio-frequency, electromagnetic field immunity test Condition Standard / Criterion with external filter (see filter suggestion below) EN55032, Class A and B Contact 6kV EN61000-4-2, Criteria A 3V/m EN61000-4-3, Criteria A Fast Transient and Burst Immunity 1.0kV EN61000-4-4, Criteria A 3V EN61000-4-6, Criteria A 50Hz, 3A/m EN61000-4-8, Criteria A Immunity to conducted disturbances, induced by radio-frequency fields Power Magnetic Field Immunity EMC Filter Suggestion according to EN55032 L1 R-78xx-1.0 +Vin +Vin C1 +Vout +Vout GND C2 GND GND Component List Class A MODEL R-783.3-1.0 R-785.0-1.0 Component List Class B C1 L1 10F 100V MLCC 3.9H choke RLS-397 MODEL R-783.3-1.0 R-785.0-1.0 C1 C2 L1 10F 100V MLCC 2.2F 100V MLCC 5.6H choke RLS-567 Notes: Note2: Filter suggestions are valid for indicated part numbers only. For other part numbers, please contact RECOM tech support for advice DIMENSION AND PHYSICAL CHARACTERISTICS Parameter Type Value Material case potting PCB non-conductive black plastic, (UL94 V-0) silicone, (UL94 V-0) FR4, (UL94 V-0) Package Dimension (LxWxH) 11.5 x 7.55 x 10.2mm Package Weight 1.9g typ. continued on next page www.recom-power.com REV.: 4/2019 I-4 R-78xx-1.0 DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) Dimension Drawing (mm) embossed logo 11.5 7.55 0.70+0.10/-0.05 5.08 4.10 0.51 10.2 Marking Tolerance: xx.x= 0.5mm xx.xx=0.25mm 0.250.05 3.21 Recommended Footprint Details Top View 1 2 3 2.54 2.00 1 2 3 Bottom View Pin Connections Pin # Single 1 +Vin 2 GND 3 +Vout 2.54 INSTALLATION AND APPLICATION High Efficiency, Isolated, Dual Unregulated Output DC/DC Converter (1:1) DC/DC Converter (1:1) R-78xx-1.0 +Vin R-78xx-1.0+Vout +Vin +Vin +Vin GND GND +Vout +Vout +Vout C1 C1 Com Com C2 C2 -Vout -Vout GND GND C1: optional C1: required optional (further decoupling filtering may C2: C2: be required (further decoupling filtering may necessary between the two converters) be necessary between the two converters) - Medical grade isolated dual outputs Medical grade isolated dual outputs -- Wide input range 6.5V to 18V input rangesuitable 6.5V tofor18V -- Wide High efficiency, 12V battery powered devices - High efficiency, suitable for 12V battery powered devices Isolated (up to 6kVDC), Wide Input Range Regulated Output +Vin +Vin DC/DC Converter (1:1) DC/DC Converter (1:1) R-78xx-1.0 C1 C1 GND GND - High isolation voltage -- High isolation Improved loadvoltage / line Regulation -- Wide Improved / line Regulation inputload voltage -- Wide input voltage Point-of-load architecture - Point-of-load architecture www.recom-power.com REV.: 4/2019 +Vin R-78xx-1.0+Vout +Vin +Vout GND GND C1, C2: optional C1, C2: optional C1 C1 +Vout +Vout GND GND I-5 R-78xx-1.0 DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) PACKAGING INFORMATION Parameter Type Value Packaging Dimension (LxWxH) tube 520.0 x 9.3 x 16.5mm Packaging Quantity tube 42pcs Storage Temperature Range -55C to +125C Storage Humidity 95% RH max. The product information and specifications may be subject to changes even without prior written notice.The product has been designed for various applications; its suitability lies in the responsibility of each customer. The products are not authorized for use in safety-critical applications without RECOM's explicit written consent. A safety-critical application is an application where a failure may reasonably be expected to endanger or cause loss of life, inflict bodily harm or damage property. The applicant shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the unauthorized use of RECOM products in such safety-critical applications. www.recom-power.com REV.: 4/2019 I-6