NKA Series www.murata-ps.com Isolated Sub-Miniature 1W Dual Output DC-DC Converters SELECTION GUIDE Input Nominal Output Output Current Isolation 1 Input Efciency MTTF Package Voltage Current at Rated Capacitance Order Code Voltage Style Load V V mA % pF kHrs NKA0303SC 3.3 3.3 152 407 74 20 195 SIP NKA0305SC 3.3 5 100 383 79 22 1121 SIP NKA0312SC 3.3 12 42 390 78 31 375 SIP NKA0312DC 3.3 12 42 390 78 31 375 DIP NKA0315SC 3.3 15 33 384 79 32 206 SIP NKA0503SC 5 3.3 152 259 77 22 205 SIP NKA0505SC 5 5 100 285 70 21 1697 SIP FEATURES NKA0509SC 5 9 56 263 76 25 682 SIP Efciency up to 82% NKA0512SC 5 12 42 255 78 28 343 SIP 3kVDC Isolation Hi Pot Test NKA0515SC 5 15 33 253 79 29 188 SIP NKA1205SC 12 5 100 112 74 33 559 SIP Wide temperature performance at full NKA1209SC 12 9 56 106 79 48 375 SIP 1 Watt load, 40C to 85C NKA1212SC 12 12 42 104 81 55 243 SIP Industry standard pinout NKA1215SC 12 15 33 102 82 60 154 SIP NKA1215DC 12 15 33 102 82 60 154 DIP Power sharing on output Recommended 3.3V, 5V & 12V Input Alternative NKA0303DC 3.3 3.3 152 407 74 20 195 DIP NKA0303SC 3.3V, 5V, 9V, 12V and 15V output NKA0305DC 3.3 5 100 383 79 22 1121 DIP NKA0305SC Internal SMD construction NKA0309DC 3.3 9 56 402 75 30 1035 DIP Contact Murata NKA0309SC 3.3 9 56 402 75 30 1035 SIP Contact Murata No external components required NKA0315DC 3.3 15 33 384 79 32 206 DIP NKA0315SC MTTF up to 1.6 Million hours NKA0503DC 5 3.3 152 259 77 22 205 DIP NKA0503SC NKA0505DC 5 5 100 285 70 21 1697 DIP NMA0505DC No electrolytic or tantalum capacitors NKA0505DEC 5 5 100 249 80 26 1557 DIP NMA0505DC Pin compatible with NMA & MEA1 series NKA0505SEC 5 5 100 249 80 26 1557 SIP NMA0505SC NKA0509DC 5 9 56 263 76 25 682 DIP NMA0509DC DESCRIPTION NKA0512DC 5 12 42 255 78 28 343 DIP NMA0512DC The NKA sub-miniature series of industrial NKA0515DC 5 15 33 253 79 29 188 DIP NMA0515DC temperature range DC-DC converters are the NKA1205DC 12 5 100 112 74 33 559 DIP NMA1205DC standard building blocks for on-board distributed NKA1209DC 12 9 56 106 79 48 375 DIP NMA1209DC power systems. The series offers smaller package NKA1212DC 12 12 42 104 81 55 243 DIP NMA1212DC size, improved efciency, lower output ripple and NKA0505DEC/NKA0505SEC offer higher efciency than NKA0505SC/NKA0505DC but over a narrower operating temperature range. 3kVDC isolation capability through the use of state See temperature characteristics graph. of the art packaging and technology. Ideally suited INPUT CHARACTERISTICS for providing dual rail supplies on primarily digital boards with the added benet of galvanic isolation Parameter Conditions Min. Typ. Max. Units Continuous operation, 3.3V input types 2.97 3.3 3.63 to reduce switching noise. All of the rated power may be drawn from a single Voltage range Continuous operation, 5V input types 4.5 5 5.5 V pin provided the total load does not exceed 1 watt. Continuous operation, 12V input types 10.8 12 13.2 3.3V input types 30 60 Reected ripple current mA p-p All other types 20 35 ABSOLUTE MAXIMUM RATINGS Lead temperature 1.5mm from case for 10 seconds 260C Input voltage VIN, NKA03 types 5.5V Input voltage VIN, NKA05 types 7V Input voltage VIN, NKA12 types 15V For full details go to 1. Calculated using MIL-HDBK-217F with nominal input voltage at full load. www.murata-ps.com/rohs All specications typical at TA=25C, nominal input voltage and rated output current unless otherwise specied. www.murata-ps.com/support KDC NKA.L01 Page 1 of 7NKA Series Isolated Sub-Miniature 1W Dual Output DC-DC Converters OUTPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Rated Power TA=-40C to 120C, see derating graphs 1W Voltage Set Point Accuracy See tolerance envelope Line regulation High VIN to low VIN 1.0 1.2 %/% 10% load to rated load, 0312 & 0315 8 14 10% load to rated load, 3.3V output types 10 15 10% load to rated load, 5V output types 10 12 2 Load Regulation % 10% load to rated load, 9V output types 6.5 8 10% load to rated load, 12V output types 6 8.5 10% load to rated load, 15V output types 6 7 BW=DC to 20MHz, 0312 & 0315 25 60 BW=DC to 20MHz, 3.3V output types 40 80 BW=DC to 20MHz, 5V output types 50 75 Ripple and Noise mV p-p BW=DC to 20MHz, 9V output types 40 65 BW=DC to 20MHz, 12V output types 40 60 BW=DC to 20MHz, 15V output types 40 60 ISOLATION CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Isolation test voltage Flash tested for 1 second 3000 VDC Resistance Viso= 1000VDC 10 G GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units 0303, 0305, 0312, 0315, 0503 and 0505XE 95 Switching frequency kHz All other types 120 TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Specication All output types -40 85 Storage -50 130 C Case temperature rise above 5V output types 30 ambient All other output types 21 Cooling Free air convection 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 specied time, across a component designed to provide electrical isolation, to verify the integrity of that isolation. Murata Power Solutions NKA 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 specic agency approvals, such as the NKA 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 NKA 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 specied 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. 1. 12V input types have typically 3% less load regulation. www.murata-ps.com/support KDC NKA.L01 Page 2 of 7