* * * * * * * Features Switching Regulator Efficiency up to 95%, 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 DC/DC Converter R-78B-1.5(L) Description The R-78Bxx-1.5 series high efficiency switching regulators are ideally suited to replace 78xx linear regulators and are pin compatible. The efficiency of up to 95% 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. 1.5 Amp SIP3 Single Output Selection Guide Part Number Input Voltage Range [VDC] 4.75 - 18 4.75 - 18 4.75 - 18 4.75 - 18 6.5 - 18 8.0 - 18 R-78B1.5-1.5 (1) R-78B1.8-1.5 (1) R-78B2.5-1.5 (1) R-78B3.3-1.5 (1) R-78B5.0-1.5 (1) R-78B6.5-1.5 (1) Output Voltage [VDC] 1.5 1.8 2.5 3.3 5.0 6.5 Output Current [A] 1.5 1.5 1.5 1.5 1.5 1.5 Efficiency @ min Vin @ max. Vin [%] [%] 83 78 85 81 88 84 91 88 94 92 95 93 Model Numbering R-78B__-1.5(L) Output Voltage Pinning Output Current Notes: Note1: add suffix "L" for 90 bent pins, e.g. R-78B5.0-1.5L EN55032 compliant IEC/EN60950-1 certified Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) BASIC CHARACTERISTICS Parameter Quiescent Current Internal Power Dissipation Internal Operating Frequency Condition Min. nom. Vin= 12VDC 7mA Vout= 1.5VDC nom. Vin= 12VDC 300kHz 9mA 340kHz 380kHz 0% 20MHz BW 15mVp-p 30mVp-p 150mAp-p 200mAp-p Ref. Back Ripple Current Absolute Maximum Capacitive Load Max. 0.65W Minimum Load (2) Output Ripple and Noise (3) Typ. 1 second start up, no external components <1 second start up + diode protection circuit 1000F 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.: 3/2019 I-1 R-78Bxx-1.5(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 6.5Vout 5Vout 3.3Vout 2.5Vout 1.8Vout 1.5Vout 30 20 10 0 4.75 7 9 11 13 15 6.5Vout 5Vout 3.3Vout 2.5Vout 1.8Vout 1.5Vout 25 20 15 10 5 0 4.75 17 18 7 9 50 90 45 80 40 70 35 Ripple [mV] Efficiency [%] 100 60 50 40 6.5Vout 5Vout 3.3Vout 2.5Vout 1.8Vout 1.5Vout 30 20 10 10 20 30 40 50 60 70 80 90 30 25 20 15 10 5 0 100 0 10 20 30 90 45 80 40 70 35 Ripple [mV] Efficiency [%] 50 60 50 40 6.5Vout 5Vout 3.3Vout 2.5Vout 1.8Vout 1.5Vout 30 20 10 20 30 40 60 70 80 90 100 50 60 70 80 90 6.5Vout 5Vout 3.3, 2.5Vout 1.8, 1.5Vout 30 25 20 15 10 5 0 100 Output Load [%] www.recom-power.com 50 Ripple vs. Load (min. Vin) 100 10 40 Output Load [%] Efficiency vs. Load (min. Vin) 0 17 18 6.5Vout 5Vout 3.3Vout 2.5Vout 1.8Vout 1.5Vout Output Load [%] 0 15 Ripple vs. Load (max. Vin) Efficiency vs. Load (max. Vin) 0 13 Input Voltage [VDC] Input Voltage [VDC] 0 11 0 10 20 30 40 50 60 70 80 90 100 Output Load [%] REV.: 3/2019 I-2 R-78Bxx-1.5(L) 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 0.3% typ. / 0.5% max. Load Regulation 10% to 100% load 0.6% typ. / 0.8% max. 100% <-> 50% load Recovery Time Transient Response 80mV typ. / 120mV max. 1.0ms min. / 1.5ms typ. PROTECTIONS Parameter Condition Short Circuit Protection (SCP) below 100m 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). R-78Bxx-1.5 +Vin +Vout +Vout max. 100mA GND Optional Protection 1: Optional Protection 2: GND R-78Bxx-1.5 +Vin +Vin +Vout +Vout +Vin GND GND R-78Bxx-1.5 +Vout GND GND +Vout= +Vout - 0.3V GND +Vout= +Vout - 0.3V Condition GND +Vout GND GND +Vin R-78Bxx-1.5 +Vin GND ENVIRONMENTAL Operating Temperature Range continuous, automatic recovery +Vin nom. Vin= 12VDC +Vin Parameter Value Value GND with derating (see graph) -40C to +85C Maximum Case Temperature +100C Temperature Coefficient 0.015%/K Thermal Impedance 0.1m/s, vertical 60K/W Operating Altitude 2000m Operating Humidity non-condensing 95% RH max. Pollution Degree PD2 MTBF according to MIL-HDBK-217F, G.B. Derating Graph +25C 5019 x 10 hours 3 100 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] www.recom-power.com REV.: 3/2019 I-3 R-78Bxx-1.5(L) 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 Condition Electromagnetic compatibility of multimedia equipment Emission requirements Standard / Criterion EN55032, Class A EN55032, Class B with external components ESD Electrostatic Discharge Immunity Test 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 EN55032 Class A and Class B L1 +Vin +Vin C1 R-78Bxx-1.5 +Vout +Vout GND C2 GND GND Level C1 C2 L1 Class A 10F 100V MLCC - 3.9H choke Class B 10F 100V MLCC 4.7F 50V MLCC 5.6H choke 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. continued on next page www.recom-power.com REV.: 3/2019 I-4 R-78Bxx-1.5(L) DC/DC Converter Series Specifications (measured @ Ta= 25C, 10% minimum load, unless otherwise stated) Dimension Drawing (mm) with suffix "L" bent pins 11.5 8.5 0.51 0.70+0.10/-0.05 2.54 1 2 3 2.00 Bottom View 2.54 Recommended Footprint Details Recommended Footprint Details Bottom View 6.10 0.250.05 4.10 0.70+0.10/-0.05 1.50 3 -9 90 0.51 Marking Tolerance: xx.x= 0.5mm xx.xx= 0.25mm Marking 0.250.05 17.5 19.0 8.5 17.5 11.5 Top View 5.08 2.00 Top View 4.10 1 2 3 1 2 3 3.21 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 Typical Application Circuit R-78Bxx-1.5 +Vin +Vin +Vout +Vout GND GND GND Application Examples High Efficiency Multiple Output +Vin R-78Bxx-1.5 +Vin +Vout P05P215D/P GND +5V @ 1A +15V @ 66mA 22F 0V Isolated Com GND -15V @ 66mA +5V Rtn - Wide input range suits both 12V and 7.2V battery packs - 5.2kV isolated short circuit protected outputs for analogue circuits, e.g. medical grade interface - High efficiency +5V/1A protected output for digital circuits - Further decoupling filtering may be necessary between the converters continued on next page www.recom-power.com REV.: 3/2019 I-5 +12V @ 0.1A RP10-4812SEW 22F 0V Isolated Com R-78Bxx-1.5(L) GND -15V @ 66mA +5V Rtn - Wide input range suits both 12V and 7.2V battery packs - 5.2kV isolated short circuit protected outputs for analogue circuits, e.g. medical grade interface - High efficiency +5V/1A protected output for digital circuits Further decoupling filtering be necessary between the converters (measured @ Ta= 25C,-10% minimum load, unlessmay otherwise stated) DC/DC Converter Specifications Series Isolated, Wide Input Range, Distributed Power Arcitecture (Point-of-Load) +12V @ 0.1A RP10-4812SEW +Vin R-78B5.0-1.5 +Vin C1 +5V @ 1.5A +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-78B3.3-1.5 +3.3V @ 1.5A +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.: 3/2019 I-6