NME 24V & 48V Series www.murata-ps.com Isolated 1W Single Output DC/DC Converters Isolation Capacitance MTTF1 Single Isolated Output Efficiency RoHS Compliant Output Voltage FEATURES NME2405DC NME2409DC NME2412DC NME2415DC NME2405SC NME2409SC NME2412SC NME2415SC Nominal Input Voltage Order Code Output Current SELECTION GUIDE V V mA % pF kHrs 24 24 24 24 24 24 24 24 5 9 12 15 5 9 12 15 200 111 83 66 200 111 83 66 70 75 80 80 70 75 80 80 40 59 78 79 40 59 78 79 201 185 163 136 201 185 163 136 Package Style DIP SIP Obsolete 1kVDC Isolation Efficiency up to 80% Power Density 1.45W/cm3 UL 94V-0 Package Material Footprint from 0.69cm2 Industry Standard Pinout 24V & 48V Input 5V, 9V, 12V and 15V Output NME4805DC NME4809DC NME4812DC NME4815DC NME4805SC NME4809SC NME4812SC NME4815SC 48 48 48 48 48 48 48 48 5 9 12 15 5 9 12 15 200 111 83 66 200 111 83 66 70 75 80 80 70 75 80 80 32 50 76 75 32 50 76 75 213 194 164 140 213 194 164 140 DIP DIP DIP DIP SIP SIP SIP SIP Recommended Alternative MER1S4805SC MER1S4809SC MER1S4812SC MER1S4815SC MER1S4805SC MER1S4809SC MER1S4812SC MER1S4815SC When operated with additional external load capacitance the rise time of the input voltage will determine the maximum external capacitance value for guaranteed start up. The slower the rise time of the input voltage the greater the maximum value of the additional external capacitance for reliable start up. No Heatsink Required Internal SMD Construction Fully Encapsulated with Toroidal Magnetics INPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Voltage range Continuous operation, 24V input types Continuous operation, 48V input types 21.6 43.2 24 48 26.4 52.8 V Min. Typ. Max. Units 1.0 W 1.2 15 10 150 %/% No External Components Required Custom Solutions Available DESCRIPTION The NME series of DC/DC Converters is particularly suited to isolating and/or converting DC power rails. The galvanic isolation allows the device to be configured to provide an isolated negative rail in systems where only positive rails exist. OUTPUT CHARACTERISTICS Parameter Conditions Rated Power2 Voltage Set Point Accuracy Line regulation TA=0°C to 70°C See tolerance envelope High VIN to low VIN 10% load to rated load, 5V output types 10% load to rated load, all other output types BW=DC to 20MHz, all output types 2 Load Regulation Ripple and Noise % mV p-p ABSOLUTE MAXIMUM RATINGS Short-circuit protection3 Lead temperature 1.5mm from case for 10 seconds Input voltage VIN, NME24 types Input voltage VIN, NME48 types 1 second 300°C 28V 54V 1. Calculated using MIL-HDBK-217F with nominal input voltage at full load. 2. See derating curve. 3. Supply voltage must be disconnected at the end of the short circuit duration. All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support KDC_NME2.E02 Page 1 of 4 NME 24V & 48V Series Isolated 1W Single Output DC/DC Converters ISOLATION CHARACTERISTICS Parameter Conditions Min. Isolation test voltage Resistance Flash tested for 1 second Viso= 500VDC 1000 1 Parameter Conditions Min. Switching frequency All types Typ. Max. Units VDC GΩ GENERAL CHARACTERISTICS Typ. Max. 100 Units kHz TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Specification Storage Cooling All output types 0 -55 Typ. Max. Units 70 150 °C Free air convection TOLERANCE ENVELOPE +10% +5% VNOM 70°C 1.0 0.5 Safe Operating Area 125°C 0 0 150 50 100 Ambient Temperature (°C) Output Voltage Output Power (W) TEMPERATURE DERATING GRAPH 1.5 Typical L oad Line +2.5% -2.5% -7.5% 10 75 50 25 Output Load Current (%) 100 TECHNICAL NOTES ISOLATION VOLTAGE ‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test voltage, applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation. Murata Power Solutions NME series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 1kVDC for 1 second. A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?” For a part holding no specific agency approvals, such as the NME series, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or 60VDC. The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; but then the circuitry on both sides of the barrier must be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-accessible circuitry according to safety standard requirements. REPEATED HIGH-VOLTAGE ISOLATION TESTING It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials, construction and environment. The NME series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enameled wire. While parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. Any material, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. We therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from specified test voltage. This consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers. www.murata-ps.com/support KDC_NME2.E02 Page 2 of 4 NME 24V & 48V Series Isolated 1W Single Output DC/DC Converters PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS PIN CONNECTIONS - 8 PIN DIP DIP Package Pin 1 0.267 (6.80)* 0.386 (9.80) NME2405DC XYYWW 4 0.043 (1.09) 0.3 (7.62) 0.181 (4.60) 0.142 (3.60) 7 5 0.0118 (0.30) 0.0078 (0.20) 0.022 (0.55) 0.018 (0.45) 0.2 (5.08) Function 1 -VIN 4 +VIN 5 +VOUT 7 -VOUT 0.3 (7.62) 0.453 (11.50) PIN CONNECTIONS - 4 PIN SIP 0.0763 (1.94) SIP Package Pin 0.45 (11.48) 0.074 (1.89) 0.109 (2.77) 0.236 (6.00)** 0.393 (10.0) NME2405SC XYYWW 0.022 (0.55) 0.018 (0.45) 0.0118 (0.30) 0.0078 (0.20) 0.049 (1.25) Function 1 -VIN 2 +VIN 3 -VOUT 4 +VOUT 0.3 (7.62) 1 0.181 (4.60) 0.142 (3.60) 2 3 4 0.022 (0.55) 0.018 (0.45) * 0.303 (7.70) for 48V variants ** 0.3 (7.50) for 48V variants All dimensions in inches ±0.01 (mm ±0.25mm). All pins on a 0.1 (2.54) pitch and within ±0.01 (0.25) of true position. Weight: 1.48g (DIP) 1.30g (SIP) www.murata-ps.com/support KDC_NME2.E02 Page 3 of 4 NME 24V & 48V Series Isolated 1W Single Output DC/DC Converters PACKAGE SPECIFICATIONS (continued) RECOMMENDED FOOTPRINT DETAILS 4 Pin SIP Package 8 Pin DIP Package )0-&4 )0-&4 TUBE OUTLINE DIMENSIONS 4 Pin SIP Tube 8 Pin DIP Tube Unless otherwise stated all dimensions in inches (mm) ±0.5mm. Tube length (8 Pin DIP) : 20.47 (520mm ±2mm). Tube length (4 Pin SIP) : 20.47 (520mm ±2mm). Tube Quantity : 35 RoHS COMPLIANCE INFORMATION This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300°C for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this series are backward compatible with Sn/Pb soldering systems. For further information, please visit www.murata-ps.com/rohs Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/ Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2013 Murata Power Solutions, Inc. www.murata-ps.com/support KDC_NME2.E02 Page 4 of 4