• Efficiency up to 95%, no heatsinks required Features • Pin-out compatible with LM78XX linears • Low profile (L/W/H=11.5 x 8.5 x 17.5mm) DC/DC Converter • Wide input range Switching • Short circuit protection, thermal shutdown Regulator • Low ripple and noise R-78B-1.5(L) • „L“ version with 90° pins Description 1.5 Amp The R-78Bxx-1.5 series high efficiency switching regulators are ideally suited to replace 78xx SIP3 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. Single Output 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. Selection Guide Part Input Output Output Efficiency Number Voltage Range Voltage Current @ min Vin @ max. Vin [VDC] [VDC] [A] [%] [%] R-78B1.5-1.5 (1) 4.75 - 18 1.5 1.5 83 78 R-78B1.8-1.5 (1) 4.75 - 18 1.8 1.5 85 81 R-78B2.5-1.5 (1) 4.75 - 18 2.5 1.5 88 84 R-78B3.3-1.5 (1) 4.75 - 18 3.3 1.5 91 88 R-78B5.0-1.5 (1) 6.5 - 18 5.0 1.5 94 92 R-78B6.5-1.5 (1) 8.0 - 18 6.5 1.5 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= 25°C, 10% minimum load, unless otherwise stated) BASIC CHARACTERISTICS Parameter Condition Min. Typ. Max. Input Voltage Range nom. Vin= 12VDC 4.75VDC 18VDC Quiescent Current nom. Vin= 12VDC 7mA 9mA Internal Power Dissipation Vout= 1.5VDC 0.65W Internal Operating Frequency nom. Vin= 12VDC 300kHz 340kHz 380kHz Minimum Load (2) 0% Output Ripple and Noise (3) 10% to 100% full load 20MHz BW 15mVp-p 30mVp-p Ref. Back Ripple Current 150mAp-p 200mAp-p Absolute Maximum 1 second start up, no external components 1000µF Capacitive Load <1 second start up + diode protection circuit 6800µF 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.: 2/2018 I-1

R-78Bxx-1.5(L) DC/DC Converter Series Specifications (measured @ Ta= 25°C, 10% minimum load, unless otherwise stated) Efficiency vs. Vin (full load) Ripple vs. Vin (full load) 100 50 6.5Vout 5Vout 90 45 3.3Vout 80 40 2.5Vout 1.8Vout 70 35 1.5Vout %] cy [ 60 mV] 30 en 50 e [ 25 ci pl Effi 40 6.5Vout Rip 20 30 5Vout 15 3.3Vout 20 2.5Vout 10 1.8Vout 5 10 1.5Vout 0 0 4.75 7 9 11 13 15 17 18 4.75 7 9 11 13 15 17 18 Input Voltage [VDC] Input Voltage [VDC] Efficiency vs. Load (max. Vin) Ripple vs. Load (max. Vin) 100 50 6.5Vout 5Vout 90 45 3.3Vout 80 40 2.5Vout 1.8Vout 70 35 %] 1.5Vout y [ 60 mV] 30 c en 50 e [ 25 ci pl Effi 40 6.5Vout Rip 20 5Vout 30 15 3.3Vout 20 2.5Vout 10 1.8Vout 10 5 1.5Vout 0 0 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 Output Load [%] Output Load [%] Ripple vs. Load (min. Vin) Efficiency vs. Load (min. Vin) 100 50 6.5Vout 5Vout 90 45 3.3, 2.5Vout 80 40 1.8, 1.5Vout 70 35 %] y [ 60 mV] 30 c en 50 e [ 25 ci pl Effi 40 6.5Vout Rip 20 5Vout 30 15 3.3Vout 20 2.5Vout 10 1.8Vout 10 5 1.5Vout 0 0 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 Output Load [%] Output Load [%] www.recom-power.com REV.: 2/2018 I-2

R-78Bxx-1.5(L) DC/DC Converter Series Specifications (measured @ Ta= 25°C, 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, full load ±0.3% typ. / ±0.5% max. Load Regulation 10% to 100% load ±0.6% typ. / ±0.8% max. 100% <-> 50% load ±80mV typ. / ±120mV max. Transient Response Recovery Time 1.0ms min. / 1.5ms typ. PROTECTIONS Parameter Condition Value Short Circuit Protection (SCP) below 100mW continuous, automatic recovery Short Circuit Input Current nom. Vin= 12VDC 100mA max. +V +V Optional Diode Protection Circuit IN R-78Bxx-1.5 OUT Optional Protection 1: Optional Protection 2: Add a blocking diode to Vout if GND GND current can flow backwards into the output, as this can damage the converter when it is powered down. +V +V +V +V = IN R-78Bxx-1.5 OUT IN R-78Bxx-1.5 +V -ou t0.3V out The diode can either be fitted across the device if the source is low impedance or fitted in series with the output (recommended). GND GND GND GND +V +V = IN R-78Bxx-1.5 +V -ou t0.3V ENVIRONMENTAL out Parameter Condition Value Operating Temperature Range with derating (see graph) -40°C to +85°C GND GND Maximum Case Temperature +100°C Temperature Coefficient ±0.015%/°C Thermal Impedance 0.1m/s, vertical 60°C/W Operating Altitude 2000m Operating Humidity non-condensing 95% RH max. Pollution Degree PD2 MTBF according to MIL-HDBK-217F, G.B. +25°C 5019 x 103 hours Derating Graph 100 90 80 70 %] d [ 60 a o ut L 50 p ut 40 O 30 20 10 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90100 71 85 Ambient Temperature [°C] www.recom-power.com REV.: 2/2018 I-3

R-78Bxx-1.5(L) DC/DC Converter Series Specifications (measured @ Ta= 25°C, 10% minimum load, unless otherwise stated) SAFETY AND CERTIFICATIONS Certificate Type (Safety) Report / File Number Standard IEC60950-1:2005, 2nd Edition + AM 2:2013 Information Technology Equipment, General Requirements for Safety 1603123 EN60950-1:2006 + AM 2:2013 EAC RU-AT.49.09571 TP TC 004/2011 RoHs 2+ RoHS 2011/65/EU + AM2015/863 EMC Compliance Condition Standard / Criterion Electromagnetic compatibility of multimedia equipment - EN55032, Class A with external components Emission requirements EN55032, Class B ESD Electrostatic Discharge Immunity Test Air ±8kV, Contact ±4kV EN61000-4-2, Criteria A Radiated, Radio-Frequency, Electromagnetic Field Immunity Test 3V/m EN61000-4-3, Criteria A EMC Filter Suggestion according EN55032 Class A and Class B L1 +V R-78Bxx-1.5 +V IN OUT C1 C2 -V -V IN OUT Level C1 C2 L1 Class A 10µF 100V MLCC - 3.9µH choke Class B 10µF 100V MLCC 4.7µF 50V MLCC 5.6µH choke DIMENSION AND PHYSICAL CHARACTERISTICS Parameter Type Value case non-conductive black plastic, (UL94 V-0) Material potting 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.: 2/2018 I-4

R-78Bxx-1.5(L) DC/DC Converter Series Specifications (measured @ Ta= 25°C, 10% minimum load, unless otherwise stated) Dimension Drawing (mm) with suffix “/L” bent pins Pin Connections embossed logo embossed logo Pin # Single 11.5 8.5 11.5 8.5 1 +Vin 2 GND 3 +Vout 5 Tolerance: xx.x= ±0.5mm 17.5 Marking 17. 19.0 Marking xx.xx= ±0.25mm 0.51 0.51 90-93°±0.050.25 0.70+0.10/-0.0550 6.10 1. 0.70+0.10/-0.05 0 0.25±0.05 4.1 Recommended Footprint Details Recommended Footprint Details Bottom View 4 4 1 2 3 2.00 2.5 5 2. Bottom View Top View 1 2 3 1 2 3 Top View 0 5.08 1 4. 0 3.21 5.082.0 2.54 1 2 3 2.54 INSTALLATION AND APPLICATION Typical Application Circuit +V +V IN R-78Bxx-1.5 OUT +V +V IN R-78Bxx-1.5 OUT GND GND GND GND Application Examples High Efficiency Multiple Output +V R-78Bxx-1.5 +5V @ 1A IN P05P215D/P +V R-78Bxx-1.5 +5V @+1 15AV @ 66mA IN P05P215D/P 22µF +15V @ 66mA 0V Isolated Com 22µF 0V Isolated Com GND -15V @ 66mA GND -15V +@5 V6 6RmtnA - Wide input range suits both 12V and 7.2V battery packs +5V Rtn - 5.2kV isolated short circuit protected outputs for analogue circuits, e.g. medical grade interface - Wide- Hinipguht e rfafincgieen scuyi t+s 5bVo/t1hA 1 p2rVo taencdte 7d. 2oVut pbuattt eforry dpiagcitkasl circuits - 5.2k-V F iusrothlaeter dd eschoourtp lcinirgc ufiiltt eprriontge cmteady obuet pnuetcse fsosra aryn ableotgwueee cni rtchuei tcso, nev.ge.r tmeresdical grade interface - High efficiency +5V/1A protected output for digital circuits - Further decoupling filtering may be necessary between the converters continued on next page +12V @ 0.1A www.recom-power.com REV.: 2/2018 I-5 RP10-4812SEW +12V @ 0.1A +V IN RP10-4812SEW R-78B5.0-1.5 +5V @ 1.5A +V C1 C2 IN R-78B5.0-1.5 +5V @ 1.5A C1 C2 GND C1, C3: optional GND - High Isolation Voltage - 1.6kV C1, C3: optional - Improved Loading / Line Regulation - High- IWsoidlaet ioInnp Vuot lVtaogltea g-e 1 R.6aknVge - 18~75VDC R-78B3.3-1.5 +3.3V @ 1.5A - Impr-o Pvoeidn tL-ooaf-dLinogad / ALrinceh itReecgtuurlaetion - Wide- CIn1p uist Vreoqltuaigreed R. aFnugrteh e-r 1 d8e~co7u5pVlDinCg filtering R-78B3.3-1.5 C3 +3.3V @ 1.5A - Poin t -moaf-yL obaed n Aecrcehsisteacrytu breetween the converters - C1 is required. Further decoupling filtering C3 may be necessary between the converters 0V @ 1A 0V @ 1A

+V +V IN R-78Bxx-1.5 OUT GND GND +V R-78Bxx-1.5 +5V @ 1A IN P05P215D/P +15V @ 66mA 22µF 0V Isolated Com R-78Bxx-1.5(L) GND -15V @ 66mA +5V Rtn DC/DC Converter Series - 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 Specifications (measured @ Ta= 25°C, 10%- H mighin eimfficuiemnc lyo +a5dV, /u1nAl persoste octtehde oruwtpisute f osrt aditgeitda)l circuits - Further decoupling filtering may be necessary between the converters Isolated, Wide Input Range, Distributed Power Arcitecture (Point-of-Load) +12V @ 0.1A RP10-4812SEW +V IN R-78B5.0-1.5 +5V @ 1.5A C1 C2 GND C1, C3: optional - High Isolation Voltage - 1.6kV - Improved Loading / Line Regulation - Wide Input Voltage Range - 18~75VDC R-78B3.3-1.5 +3.3V @ 1.5A - Point-of-Load Architecture - C1 is required. Further decoupling filtering C3 may be necessary between the converters 0V @ 1A PACKAGING INFORMATION Parameter Type Value without suffix 520.0 x 25.1 x 10.6mm Packaging Dimension (LxWxH) tube with suffix “L” 520.0 x 26.1 x 15.8mm Packaging Quantity tube 42pcs Storage Temperature Range -55°C to +125°C 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.: 2/2018 I-6

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: R ECOM: R-78B3.3-1.5 R-78B5.0-1.5 R-78B1.5-1.5 R-78B1.5-1.5L R-78B1.8-1.5 R-78B1.8-1.5L R-78B2.5-1.5 R-78B2.5- 1.5L R-78B3.3-1.5L R-78B5.0-1.5L R-78B6.5-1.5 R-78B6.5-1.5L