* Efficiency up to 97%, no heatsinks required * Pin compatible with LM78XX linears * Low profile (L/W/H=11.5 x 8.5 x 17.5mm) * Wide input range * Short circuit protection, thermal shutdown * Low ripple and noise * L" version with 90 pins * Positive to negative converter Features Switching Regulator DC/DC Converter R-78B-1.0(L) Description The R-78Bxx-1.0 series high efficiency switching regulators are ideally suited to replace 78xx linear regulators 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. The L-Version with 90 pins allows direct replacement for laid-flat regulators where component height is at a premium. Low ripple and noise figures and a short circuit input current of typically only 10mA round off the specifications of this versatile converter series. 1.0 Amp SIP3 Single Output Selection Guide Part Input Output Number Voltage Range Voltage [VDC] [VDC] R-78B1.5-1.0 (1) 4.75 - 26 1.5 R-78B1.8-1.0 (1) 4.75 - 26 1.8 R-78B2.5-1.0 (1)4.75 - 32 2.5 R-78B3.3-1.0 (1) 4.75 - 32 3.3 R-78B5.0-1.0 (1) 6.5 - 32 5.0 R-78B6.5-1.0 (1) 9.0 - 32 6.5 R-78B9.0-1.0 (1) 12 - 32 9.0 R-78B12-1.0 (1) 16 - 32 12 R-78B15-1.0 (1) 20 - 32 15 OutputEfficiency Current @ min Vin @ max. Vin [A] [%][%] 1.0 77 71 1.0 80 74 1.0 85 78 1.0 8983 1.0 9388 1.0 9490 1.0 9593 1.0 9695 1.0 9796 Model Numbering R-78B__-1.0(L) Output Voltage Pinning Output Current Notes: Note1: add suffix "L" for 90 bent pins, e.g. R-78B5.0-1.0L EN55032 compliant IEC/EN60950-1 certified Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) BASIC CHARACTERISTICS Parameter Condition Absolute Maximum Input Voltage 1.5Vout , 1.8Vout 2.5Vout to 15Vout Quiescent Current nom. Vin= 24VDC Internal Power Dissipation Internal Operating Frequency Min. Max. 26VDC 34VDC 5mA Vout= 1.5VDC 7mA 0.65W nom. Vin= 24VDC 280kHz 330kHz 380kHz 0% Minimum Load (2) Output Ripple and Noise (3) Typ. 20MHz BW 1.5Vout to 6.5Vout 9Vout to 15Vout Ref. Back Ripple Current 15mVp-p 20mVp-p 25mVp-p 35mVp-p 150mA 200mAp-p Absolute Maximum 1 second start up, no external components 470F Capacitive Load <1 second start up + diode protection circuit 6800F Notes: Note2: Operation under no load will not harm the converter, but specifications may not be met A minimum load of 10mA is recommended Note3: Output Ripple and Noise is tested from 10% to 100% load continued on next page www.recom-power.com REV.: 4/2019 I-1 R-78Bxx-1.0(L) 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 60 30 Ripple [mV] Efficiency [%] Efficiency vs. Vin (full load) 50 40 15Vout 12Vout 9Vout 6.5Vout 5Vout 30 20 10 0 4.75 9 13 17 25 3.3Vout 2.5Vout 1.8, 1.5Vout 25 20 15 3.3Vout 2.5Vout 1.8Vout 1.5Vout 21 15Vout 12, 9Vout 6.5Vout 5Vout 10 5 0 4.75 29 32 9 13 50 90 45 80 40 70 35 Ripple [mV] Efficiency [%] 100 60 50 40 15Vout 12Vout 9Vout 6.5Vout 5Vout 30 20 10 10 20 30 40 50 60 3.3Vout 2.5Vout 1.8Vout 1.5Vout 70 80 90 15Vout 12, 9Vout 6.5Vout 5Vout 25 20 10 5 0 100 0 10 20 30 45 80 40 70 35 Ripple [mV] Efficiency [%] 90 60 50 40 15Vout 12Vout 9, 6.5Vout 5Vout 0 10 20 30 40 60 70 80 90 100 50 60 70 80 90 70 80 90 100 15, 12, 9Vout 6.5Vout 2.5, 3.3, 5Vout 1.5, 18Vout 30 25 20 15 3.3Vout 2.5Vout 1.8Vout 1.5Vout 10 5 0 100 Output Load [%] www.recom-power.com 50 Ripple vs. Load (min. Vin) 50 0 40 Output Load [%] 100 10 3.3Vout 2.5Vout 1.8, 1.5Vout 15 Efficiency vs. Load (min. Vin) 20 29 32 30 Output Load [%] 30 25 Ripple vs. Load (max. Vin) Efficiency vs. Load (max. Vin) 0 21 Input Voltage [VDC] Input Voltage [VDC] 0 17 0 10 20 30 40 50 60 Output Load [%] REV.: 4/2019 I-2 R-78Bxx-1.0(L) DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) REGULATIONS Parameter Condition Output Accuracy 100% load Value 2.0% typ / 3.0% max. Line Regulation low line to high line, 100% load 1.5Vout to 6.5Vout 9Vout to 15Vout Load Regulation 10% to 100% load 1.5Vout to 6.5Vout 9Vout to 15Vout 100% <-> 50% load Recovery Time Transient Response 0.2% typ. / 0.4% max. 0.1% typ. / 0.2% max. 0.4% typ. / 0.6% max. 0.25% typ. / 0.4% max. 100mV typ. / 150mV max. 1.0ms typ. / 1.5ms max. PROTECTIONS Parameter Condition Short Circuit Protection (SCP) Short Circuit Input Current The diode can either be fitted across the device if the source is low impedance or fitted in series with the output (recommended). Protection Circuit continuous, automatic recovery +Vin nom. Vin= 24VDC 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. Value below 100mW R-78Bxx-1.0 +Vin +Vout +V 60mA max. out GND Optional Protection 1: Optional Protection 2: GND R-78Bxx-1.0 +Vin +Vin +Vout +Vout +Vin GND GND R-78Bxx-1.0 +Vin +Vout +Vout= +Vout +V +Vout - 0.3V out R-78Bxx-1.0 GND +Vin +Vin R-78Bxx-1.0 +Vin +Vout GND GND +Vin GND GND +Vout= +Vout - 0.3V GND GND GND C1 GND GND GND To protect the converter during power-up, use C1=22F if Vin>30V ENVIRONMENTAL Parameter Operating Temperature Range Condition Value with derating (see graph) -40C to +85C Maximum Case Temperature +100C Temperature Coefficient Thermal Impedance 0.015%/K 0.1m/s, vertical 60K/W Operating Altitude Operating Humidity 2000m non-condensing 95% RH max. Pollution Degree MTBF PD2 according to MIL-HDBK-217F, G.B. +25C 8593 x 10 hours 3 continued on next page www.recom-power.com REV.: 4/2019 I-3 R-78Bxx-1.0(L) DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) Derating Graph 100 90 Output Load [%] 80 70 60 50 40 30 20 10 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 71 85 Ambient Temperature [C] SAFETY AND CERTIFICATIONS Certificate Type (Safety) Report / File Number Information Technology Equipment, General Requirements for Safety 1603123 EAC Standard IEC60950-1:2005, 2nd Edition + AM 2:2013 EN60950-1:2006 + AM 2:2013 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 Condition Standard / Criterion with external filter (see filter suggestion below) EN55032, Class A and B Air 8kV, Contact 4kV EN61000-4-2, Criteria A 3V/m EN61000-4-3, Criteria A Radiated, radio-frequency, electromagnetic field immunity test EMC Filter Suggestion according to EN55032 L1 R-78Bxx-1.0 +Vin +Vin C2 C1 +Vout +Vout GND GND GND Component List Class A MODEL R-78B5.0-1.0(L) R-78B12-1.0(L) R-78B15-1.0(L) Component List Class B C1 C2 L1 10F 100V MLCC 4.7F 50V MLCC 3.9H choke RLS-397 MODEL R-78B5.0-1.0(L) R-78B12-1.0(L) R-78B15-1.0(L) C1 C2 L1 10F 100V MLCC 10F 100V MLCC 12H choke RLS-126 Notes: Note4: Filter suggestions are valid for indicated part numbers only. For other part numbers, please contact RECOM tech support for advice www.recom-power.com REV.: 4/2019 I-4 R-78Bxx-1.0(L) DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) DIMENSION AND PHYSICAL CHARACTERISTICS Parameter Type Value Material case potting non-conductive black plastic, (UL94 V-0) silicone, (UL94 V-0) Package Dimension (LxWxH) 11.5 x 8.5 x 17.5mm Package Weight 4g typ. Dimension Drawing (mm) with suffix "L" bent pins 11.5 8.5 Marking 0.70+0.10/-0.05 0.250.05 Recommended Footprint Details 2.54 Bottom View 1 2 3 1 2 3 1 2 3 Top View 5.08 4.10 Top View 2.00 3.21 2.00 Recommended Footprint Details Bottom View 6.10 2.54 4.10 0.70+0.10/-0.05 1.50 3 -9 90 0.51 0.51 Marking Tolerance: xx.x= 0.5mm xx.xx=0.25mm 0.250.05 8.5 17.5 19.0 11.5 17.5 Pin Connections Pin # Single 1 +Vin 2 GND 3 +Vout embossed logo embossed logo 5.08 2.54 1 2 3 2.54 INSTALLATION AND APPLICATION Positive to Negative Converter C1 and C2 are required and should be fitted close to the converter pins. +Vin 1 R-78Bxx-1.0 3 Maximum capacitive load including C2 is 220F 2 C2 C1 -Vout GND GND +Vin 1 R-78Bxx-1.0 1 2 3 3 continued on next page 2 www.recom-power.com Pin Connections Pin # Negative Positive 1 +Vin +Vin 2 -Vout GND 3 GND +Vout C1 C2 REV.: 4/2019 -Vout I-5 R-78Bxx-1.0(L) DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) Selection Guide - Negative Output Part Number R-78B1.5-1.0 R-78B1.8-1.0 R-78B2.5-1.0 R-78B3.3-1.0 R-78B5.0-1.0 R-78B6.5-1.0 R-78B9.0-1.0 R-78B12-1.0 R-78B15-1.0 Input Voltage Range [VDC] 4.75 - 28 4.75 - 28 4.75 - 28 4.75 - 28 6.5 - 28 8.0 - 26 8.0 - 18 8.0 - 18 8.0 - 18 +V Output OutputEfficiency External Capacitor Voltage Current @ min Vin @ max. Vin C1 C2 (5) [VDC] [A] [%][%] -1.5 -0.6 70 68 10F/50V 22F/6.3V -1.8 -0.6 72 72 10F/50V 22F/6.3V -2.5 -0.6 75 77 10F/50V 22F/6.3V -3.3 -0.6 7780 10F/50V22F/6.3V -5.0 -0.6 8385 10F/50V22F/10V -6.5 -0.4 84 87 10F/50V 10F/10V -9.0 -0.4 88 89 10F/25V 10F/25V -12 -0.3 8990 10F/25V10F/25V -15 R-78Bxx-1.0 -0.3 8991 10F/25V10F/25V 1 in 3 2 Notes: Note5:C1Maximum Capacitive Load including C2C2 is 220F -Vout Dual Output (two Converters) with Negative Output GND GND +Vin 1 R-78Bxx-1.0 3 2 C2 C1 -Vout GND GND 2 1 R-78Bxx-1.0 +Vout 3 Application Examples High Efficiency Multiple Output R-78Bxx-1.0 +Vin +Vin +Vout RD-0512D GND +12V @ 84mA C2 C1 +5V @ 0.4A 0V Com GND -12V @ 84mA C1 optional; C2 required (further decoupling filtering may be necessary between the two converters) * Wide input range 4.75V to 34V * 12V outputs for analogue circuits, e.g. instrumentation amplifier * +5V output for digital circuits continued on next page www.recom-power.com +Vin RP10-4812SEW +12V @ 0.1A REV.: 4/2019 R-78B5.0-1.0 +Vin +Vout +5V @ 1A I-6 +12V @ 84mA C2 C1 0V Com R-78Bxx-1.0(L) GND -12V @ 84mA C1 optional; DC/DC Converter Specifications * Wide input range 4.75V to 34V C2 required (further decoupling filtering may * 12Vstated) outputs for analogue circuits, e.g. instrumentation amplifier between the two converters) (measuredbe@necessary Ta= 25C, 10% minimum load, unless otherwise * +5V output for digital circuits Series Isolated, Wide Input Range, Distributed Power Arcitecture (Point-of-Load) +12V @ 0.1A RP10-4812SEW R-78B5.0-1.0 +Vin +Vin C1 +5V @ 1A +Vout GND C2 -Vin C2, C3: optional - High isolation voltage - 1.6kV - Improved load / line regulation - Wide input voltage range - 18~75VDC - Point-of-load architecture - C1 is required. Further decoupling filtering may be necessary between the converters R-78B3.3-1.0 +3.3V @ 1A +Vout +Vin GND C3 0V @ 1A PACKAGING INFORMATION Parameter Packaging Dimension (LxWxH) Packaging Quantity Type Value without suffix with suffix "L" tube tube Storage Temperature Range 520.0 x 25.1 x 10.6mm 520.0 x 26.1 x 15.8mm 42pcs -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-7