NKE Series www.murata-ps.com Isolated Sub-Miniature 1W Single Output DC/DC Converters SELECTION GUIDE Order Code FEATURES % MIL. Tel. V V mA mA pF Min. Typ. kHrs RoHS Compliant NKE0303DC 3.3 3.3 303 400 68 72 30 4337 46,969 Sub-Miniature SIP & DIP Styles NKE0305DC 3.3 5 200 400 72 75 35 4105 46,783 DIP NKE0309DC 3.3 9 111 403 71 74 30 1904 28,918 3kVDC Isolation Hi Pot Test NKE0303SC 3.3 3.3 303 400 68 72 30 4337 46,969 UL Recognised NKE0305SC 3.3 5 200 400 72 75 35 4105 46,783 SIP NKE0309SC 3.3 9 111 403 71 74 30 1904 28,918 Wide Temperature performance at full NKE0503DC 5 3.3 303 270 70 74 40 3710 36,234 1 Watt load, 40C to 85C NKE0505DC 5 5 200 289 66 69 28 4277 34,897 UL 94V-0 Package Material NKE0505DEC 5 5 200 250 73 77 34 2686 35,919 DIP 2 Footprint at 0.69cm NKE0509DC 5 9 111 266 72 75 29 3729 76,553 NKE0512DC 5 12 83 260 73 78 30 2910 73,523 Industry Standard Pinout NKE0515DC 5 15 66 256 74 78 32 2211 71,725 3.3V, 5V & 12V Input NKE0503SC 5 3.3 303 270 70 74 40 3710 36,234 NKE0505SC 5 5 200 289 66 69 28 4277 34,897 3.3V, 5V, 9V, 12V and 15V Output NKE0505SEC 5 5 200 250 73 77 34 2686 35,919 SIP Internal SMD Construction NKE0509SC 5 9 111 266 72 75 29 3729 76,553 NKE0512SC 5 12 83 260 73 78 30 2910 73,523 Fully Encapsulated with Toroidal NKE0515SC 5 15 66 256 74 78 32 2211 71,725 Magnetics NKE1205DC 12 5 200 117 68 72 35 3981 58,202 MTTF up to 2.4 Million hours NKE1209DC 12 9 111 107 72 78 50 3482 57,895 DIP NKE1212DC 12 12 83 105 73 79 57 1982 77,806 Custom Solutions Available NKE1215DC 12 15 66 103 76 81 60 2122 56,404 No Electrolytic or Tantalum Capacitors NKE1205SC 12 5 200 117 68 72 35 3981 58,202 NKE1209SC 12 9 111 107 72 78 50 3482 57,895 SIP PRODUCT OVERVIEW NKE1212SC 12 12 83 105 73 79 57 1982 77,806 The NKE sub-miniature series of DC/DC Converters NKE1215SC 12 15 66 103 76 81 60 2122 56,404 is particularly suited to isolating and/or converting NKE0505SEC/NKE0505DEC offers higher efciency than NKE0505SC/NKE0505DC but over a narrower operating temperature range. DC power rails. A smaller package size, improved See temperature characteristics graph. efciency, lower output ripple and 3kVDC isolation INPUT CHARACTERISTICS capability through state of the art packaging and improved technology. The galvanic isolation allows Parameter Conditions Min. Typ. Max. Units the device to be congured to provide an isolated Continuous operation, 3.3V input types 2.97 3.3 3.63 negative rail in systems where only positive rails Voltage range Continuous operation, 5V input types 4.5 5.0 5.5 V exist. The wide temperature range guarantees Continuous operation, 12V input types 10.8 12.0 13.2 startup from 40C and full 1 watt output at 85C. Reected ripple current 3.3V input types 40 60 mA p-p ABSOLUTE MAXIMUM RATINGS Lead temperature 1.5mm from case for 10 seconds 260C Input voltage VIN, NKE03 types 5.5V Input voltage VIN, NKE05 types 7V Input voltage VIN, NKE12 types 15V 1. Calculated using MIL-HDBK-217 FN2 and Telcordia SR-332 calculation model with nominal input voltage at full load. All specications typical at TA=25C, nominal input voltage and rated output current unless otherwise specied. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support KDC NKE.K07 Page 1 of 7 Nominal Input Voltage Output Voltage Output Current Input Current at Rated Load Efciency Isolation Capacitance 1 MTTF Package StyleNKE Series Isolated Sub-Miniature 1W Single Output DC/DC Converters OUTPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Rated Power TA=-40C to 120C, see derating graphs 1.0 W Voltage Set Point Accuracy See tolerance envelope Line regulation High VIN to low VIN 1.0 1.2 %/% 10% load to rated load, 3.3V output types & 0309 10 15 10% load to rated load, 5V output types 12 15 1 Load Regulation 10% load to rated load, 9V output types 7.5 10 % 10% load to rated load, 12V output types 6.5 9.5 10% load to rated load, 15V output types 6.0 8.5 BW=DC to 20MHz, 3.3V output types & 0305, 0505SEC, 0505DEC 40 80 BW=DC to 20MHz, other 5V output types 77 100 Ripple and Noise BW=DC to 20MHz, 9V output types 43 90 mV p-p BW=DC to 20MHz, 12V output types 35 65 BW=DC to 20MHz, 15V output types 32 55 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 Switching frequency All output types 115 kHz TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Specication All output types -40 85 Storage -50 130 C Case temperature rise above 0505D/S, 1205D/S 41 ambient All other output types 32 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 NKE series of dc/dc converters are all 100% production tested at their stated isolation voltage. This is 3000V DC for 1 second. A question commonly asked is, What is the continuous voltage that can be applied across the part in normal operation The NKE series has been recognized by Underwriters Laboratory for functional insulation. 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 sys- tem. 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 materi- als, construction and environment. While manufactured parts can 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. SAFETY APPROVAL The NKE series has been recognised by Underwriters Laboratory (UL) to UL 60950 for functional insulation in a maximum ambient temperature of 85C and/or case temperature limit of 130C. Case temperature measured on the face opposite the pins. File number E151252 applies. 1. 12V input types have typically 3% less load regulation. www.murata-ps.com/support KDC NKE.K07 Page 2 of 7