* Efficiency up to 97%, no need for heatsinks * Pin-out compatible with LM78XX linears * Very low profile * 4.75V - 32V Wide input range * Short circuit protection, thermal shutdown * Low ripple and noise * IEC/EN60950-1 certified * Positive to negative converter Features Switching Regulator Description The R-78xx-Series high efficiency switching regulators are ideally suited to replace 78xx linear regultors and are pin compatible. The efficiency of up to 97% means that very little energy is wasted as heat so there is no need for any heat sinks with their additional space and mounting costs. Low ripple and noise figures and short circuit, overload and over-temperature protection round off the specifications of this versatile converter series. This R-78xx-0.5 is fully certified to EN55032 EMC Standard and for IEC/EN-60950-1 + AM2 Safety. DC/DC Converter R-78-0.5 0.5 Amp SIP3 Single Output Selection Guide Part Input Voltage Range Number [VDC] 4.75 - 30 (1) R-781.5-0.5 R-781.8-0.5 4.75 - 32 R-782.5-0.5 4.75 - 32 R-783.3-0.54.75 (2) - 32 R-785.0-0.5 6.5 - 32 R-786.5-0.5 8.0 - 32 R-789.0-0.5 11 - 32 R-7812-0.515 - 32 R-7815-0.5 18 - 32 Output Voltage [VDC] 1.5 1.8 2.5 3.3 5.0 6.5 9.0 12 15 OutputEfficiency Current @ min Vin @ max. Vin [A] [%][%] 0.5 7363 0.5 82 71 0.5 87 77 0.5 9181 0.5 94 86 0.5 95 88 0.5 96 92 0.5 9794 0.5 97 95 Notes: Note1: 1.5V Output can be unstable with Vin>30VDC Note2: Refer to Transient Response on page I-3 IEC/EN60950-1 certified EN55032 compliant Model Numbering R-78__-0.5 Output Voltage www.recom-power.com Output Current REV.: 5/2019 I-1 R-78xx-0.5 DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) BASIC CHARACTERISTICS Parameter Condition Min. Typ. Max. Absolute Maximum Input Voltage 34VDC Quiescent Current 5mA nom. Vin= 24VDC 7mA 0.4W Internal Power Dissipation 0% Minimum Load (3) Internal Operating Frequency 280kHz Output Ripple and Noise 330kHz 380kHz 20MHz BW, without output capacitor 1.5 - 6.5VDC 9 - 15.5VDC 20mVp-p 30mVp-p 30mVp-p 40mVp-p 20MHz BW (4) 1.5VDC 1.8 - 15.5VDC 15mVp-p 25mVp-p 20mVp-p 35mVp-p Absolute Maximum Capacitive Load 1 second start up, no external components 220F <1 second start up + diode protection circuit 6800F Notes: Note3: Operation under no load will not harm the converter, but specifications may not be met A minimum load of 6mA is recommended Note4: Measurements are made with a 100nF MLCC across output (low ESR) Ripple vs. Vin (full load) 100 50 90 45 80 40 70 35 Ripple [mV] Efficiency [%] Efficiency vs. Vin (full load) 60 50 40 15, 12Vout 9Vout 5Vout 3.3Vout 1.8Vout 1.5Vout 30 20 10 0 0 5 15Vout 12Vout 9Vout 5Vout 3.3Vout 1.8Vout 1.5Vout 30 25 20 15 10 5 10 15 20 25 0 30 34 0 5 10 Input Voltage [VDC] 90 45 80 40 70 35 Ripple [mV] Efficiency [%] 50 60 50 40 15Vout 12Vout 5Vout 3.3Vout 1.8Vout 1.5Vout 30 20 10 10 20 30 25 30 34 Ripple vs. Load (nom. Vin) 100 0 20 Input Voltage [VDC] Efficiency vs. Load (max. Vin) 0 15 40 50 60 70 80 90 15Vout 12Vout 9Vout 5Vout 3.3Vout 1.8Vout 1.5Vout 30 25 20 15 10 5 100 0 Output Load [%] 0 10 20 30 40 50 60 70 80 90 100 Output Load [%] continued on next page www.recom-power.com REV.: 5/2019 I-2 R-78xx-0.5 DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) Ripple vs. Load (min. Vin) 100 50 90 45 80 40 70 35 Ripple [mV] Efficiency [%] Efficiency vs. Load (min. Vin) 60 50 40 15, 12Vout 5Vout 3.3Vout 1.8Vout 1.5Vout 30 20 10 0 30 25 20 15 10 5 0 0 10 20 30 15Vout 12Vout 9, 3.3Vout 5Vout 1.8Vout 1.5Vout 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 Output Load [%] Output Load [%] REGULATIONS Parameter Condition Value Output Accuracy 100% load 2.0% typ / 3.0% max. Line Regulation low line to high line, 100% load 1.5V - 6.5V 9V - 15.5V 0.2% typ. / 0.4% max. 0.1% typ. / 0.2% max. Load Regulation 10% to 100% load 1.5V - 6.5V 9V - 15.5V 0.4% typ. / 0.6% max. 0.25% typ. / 0.4% max. 100% <-> 50% load 100% <-> 10% load Transient Response (5) 75mV typ. 100mV max. Notes: Note5: The R.783.3-0.5 requires Vin>5.5V to meet the Transient Response specifications PROTECTIONS Parameter Condition Value Short Circuit Protection (SCP) continuous, automatic recovery Short Circuit Input Current Optional Diode Protection Circuit 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. The diode can either be fitted across the device if the source is low impedance or fitted in series with the output (recommended). Application example: Driving a high capacitive load +Vin R-78xx-0.5 +Vout +V 60mA max. out GND Optional Protection 1: Optional Protection 2: GND +Vin +Vin R-78xx-0.5 +Vout +Vout +Vin GND +Vin GND +Vin R-78xx-0.5 +Vin R-78xx-0.5 +Vout GND +Vout= +Vout - 0.3V GND +Vout - 0.3V +Vout R-78xx-0.5 +Vout GND +Vin +Vout= +Vout GND +Vin GND GND GND GND GND 6800F GND www.recom-power.com +Vin nom. Vin= 24VDC GND REV.: 5/2019 I-3 R-78xx-0.5 DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) ENVIRONMENTAL Parameter Condition Operating Temperature Range Value 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-condensing 95% RH max. Pollution Degree PD2 MTBF according to MIL-HDBK-217F, G.B. 26163 x 10 hours +25C 3 Derating Graph Output Power [%] 100 80 60 40 20 0 -40 0 20 40 60 71 80 85 100 Ambient Temperature [C] SAFETY AND CERTIFICATIONS Certificate Type (Safety) Report / File Number Information Technology Equipment, General Requirements for Safety 1603123 EAC RU-AT.49.09571 RoHs 2+ IEC60950-1:2005, 2nd Edition + Am 2:2013 EN60950-1:2006 + Am 2:2013 TP TC 004/2011 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 Fast Transient and Burst Immunity 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 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 Standard continued on next page www.recom-power.com REV.: 5/2019 I-4 R-78xx-0.5 DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) EMC Filter Suggestion according to EN55032 L1 R-78xx-0.5 +Vin +Vin C2 C1 +Vout +Vout GND GND GND Component List Class A MODEL R-785.0-0.5 R-7812-0.5 Component List Class B C1 C2 10F 100V MLCC L1 3.3F 100V MLCC MODEL R-785.0-0.5 3.9H choke RLS-397 R-7812-0.5 C1 C2 L1 10F 100V MLCC 3.3F 100V MLCC 5.6H choke RLS-567 Notes: Note6: 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. Dimension Drawing (mm) embossed logo 7.55 1 2 3 Bottom View 3.21 0.25 0.05 Tolerance: xx.x= 0.5mm xx.xx=0.25mm Recommended Footprint Details 2.54 5.08 Pin Connections Pin # Single 1 +Vin 2 GND 3 +Vout Marking 4.10 0.70 +0.10/-0.05 2.00 0.51 10.2 11.5 Top View 1 2 3 2.54 www.recom-power.com REV.: 5/2019 I-5 R-78xx-0.5 DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) INSTALLATION AND APPLICATION Positive to Negative Converter +Vin 1 R-78xx-0.5 C1 and C2 are required and should be fitted close to the converter pins. 3 Maximum capacitive load including C2 is 220F 2 C2 C1 -Vout GND GND 1 2 3 +Vin 1 R-78xx-0.5 Pin Connections Pin # Negative Positive 1 +Vin +Vin 2 -Vout GND 3 GND +Vout 3 2 Selection Guide - NegativeC1Output Part Number GND R-781.5-0.5 R-781.8-0.5 R-782.5-0.5 R-783.3-0.5 R-785.0-0.5 R-786.5-0.5 R-789.0-0.5 R-7812-0.5 R-7815-0.5 C2 Input Voltage Range [VDC] 4.75 - 28 4.75 - 28 2 4.75 - 28 1 4.75 - 28 R-78xx-0.5 4.75 - 28 5.0 - 26 8.0 - 18 8.0 - 18 8.0 - 18 +Vin Output Voltage [VDC] -1.5 -1.8 -2.5 3 -3.3 -5.0 -6.5 -9.0 -12 -15 -Vout OutputEfficiency External Capacitor Current @ min Vin @ max. Vin C1 C2 (7) [A] [%][%] GND -0.4 68 67 10F/35V 22F/6.3V -0.4 71 70 10F/50V 22F/6.3V -0.4 75 76 10F/50V 22F/6.3V +Vout -0.4 7780 10F/50V22F/6.3V -0.4 79 84 10F/50V 22F/10V -0.3 81 86 10F/50V 10F/10V -0.2 87 89 10F/50V 10F/16V -0.2 8790 10F/50V10F/25V -0.2 87 81 10F/50V 10F/25V R-78xx-0.5 Notes: 1 3 Note7: Maximum Capacitive Load including C2 is 220F 2 C2 C1 -Vout Dual Output (two Converters) with Negative Output GND GND +Vin 1 R-78xx-0.5 3 2 C2 C1 -Vout GND GND 2 1 R-78xx-0.5 3 +Vout continued on next page www.recom-power.com REV.: 5/2019 I-6 R-78xx-0.5 DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) Standard Application Circuit +Vin +Vin R-78xx-0.5 +Vout +Vout GND C1 3.3F~10F* +Vin GND +Vin R-78xx-0.5 +Vout GND +Vout GND R-78xx-0.5 +Vout +Vin +Vin +Vout capacitor required if Vin>26VDC (3.3F)6800F or if the supply is a battery * Input GND or other low impedance source (4.7F~10F) Capacitor should be electolytic or MLCC with 6800F low ESR (1) GND GND GND GND High Efficiency, Isolated, Dual Unregulated Output +Vin +Vin GND GND +Vin +Vin C1 DC/DC Converter (1:1) R-78xx-0.5 +Vout +Vout DC/DC Converter (1:1) GND R-78xx-0.5 +Vout Com +Vout GND C1 C2 Com -Vout C2 C1, C2: optional - Isolated dual outputs - Wide input range 4.75V to 34V - Isolated dual outputs - Wide input range 4.75V to 34V C1, C2: optional -Vout Isolated (up to 6kVDC), Wide Input Range Regulated Output DC/DC Converter (1:1) +Vin +Vin DC/DC Converter (1:1) +Vin C1 C1 +Vin R-78xx-0.5 +Vout GND GND GND +Vout +Vout GND R-78xx-0.5 C2 +Vout C2 GND - High isolation voltage - Improved load / line Regulation - Wide High isolation voltage input voltage - Improved loadarchitecture / line Regulation Point-of-load - Wide input voltage - Point-of-load architecture C1, C2: optional GND C1, C2: optional 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.: 5/2019 I-7