NTA Series www.murata-ps.com Isolated 1W Dual Output SM DC/DC Converters SELECTION GUIDE Nominal Input Output Output Isolation 2 Input Current at Efciency MTTF 1 Order Code Voltage Current Capacitance Voltage Rated Load V V mA mA % pF kHrs NTA0303MC 3.3 3.3 152 402 75 29 1005 NTA0305MC 3.3 5 100 388 78 30 399 NTA0309MC 3.3 9 55 405 75 34 827 NTA0312MC 3.3 12 42 390 77 40 375 NTA0315MC 3.3 15 33 392 77 42 206 NTA0503MC 5 3.3 152 259 77 31 964 FEATURES NTA0505MC 5 5 100 290 69 33 1697 NTA0505MEC 5 5 100 251 80 42 367 RoHS compliant NTA0509MC 5 9 55 267 75 38 682 Efciency up to 78% NTA0512MC 5 12 42 260 77 44 343 Wide temperature performance at full NTA0515MC 5 15 33 256 78 43 188 NTA1205MC 12 5 100 121 69 50 559 1 Watt load, 40C to 85C NTA1209MC 12 9 55 113 74 72 375 UL 94V-0 Package material NTA1212MC 12 12 42 111 75 89 243 2 Footprint over pins 1.64cm NTA1215MC 12 15 33 110 76 100 154 Lead frame technology INPUT CHARACTERISTICS 3.3V, 5V & 12V Input Parameter Conditions Min. Typ. Max. Units Continuous operation, 3V input types 2.97 3.3 3.63 3.3V, 5V, 9V, 12V & 15V Output Voltage range Continuous operation, 5V input types 4.5 5 5.5 V Internal SMD construction Continuous operation, 12V input types 10.8 12 13.2 Reected ripple current 41 50 mA p-p Toroidal magnetics 1kVDC Isolation Hi Pot Test ISOLATION CHARACTERISTICS MTTF up to 2.1 Million hours Parameter Conditions Min. Typ. Max. Units Isolation voltage Flash tested for 1 second 1000 VDC 3 Power density 1.36W/cm Resistance Viso= 1000VDC 10 G No heatsink required GENERAL CHARACTERISTICS Custom solutions available Parameter Conditions Min. Typ. Max. Units Multi-layer ceramic capacitors 0312MC, 0315MC 100 Switching frequency 0303MC, 0305MC, 0503MC, 0505MEC 110 kHz PRODUCT OVERVIEW All other variants 115 The NTA series of miniature surface mounted DC/DC Converters employ leadframe ABSOLUTE MAXIMUM RATINGS technology and transfer moulding techniques Internal power dissipation 700mW to bring all of the benets of IC style Input voltage VIN, NTA03 types 5.5V packaging to hybrid circuitry. Co-planarity of the Input voltage VIN, NTA05 types 7V lead positions is based upon IEC 191-6:1990. The Input voltage VIN, NTA12 types 15V devices are suitable for all applications where 1. If components are required in tape and reel format sufx order code code with -R, e.g. NTA0505MC-R. high volume production is envisaged. 2. Calculated using MIL-HDBK-217F 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 NTA.I07 Page 1 of 6NTA Series Isolated 1W Dual Output SM DC/DC Converters OUTPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Rated Power TA=-40C to 85C 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, 0303MC & 0503MC 10 15 10% load to rated load, 5V output types 10 12 10% load to rated load, 0309MC 9.0 10 1 Load Regulation 10% load to rated load, 0509MC & 1209MC 6.5 8.0 % 10% load to rated load, 0312MC & 0315MC 11 14 10% load to rated load, 0512MC & 1212MC 6.0 8.5 10% load to rated load, 0515MC & 1215MC 6.0 7.0 BW=DC to 20MHz, 3.3V output types, NTA0305MC & NTA0505MEC 40 80 BW=DC to 20MHz, all other 5V output types 50 100 Ripple and Noise BW=DC to 20MHz, 9V output types 35 80 mV p-p BW=DC to 20MHz, 12V output types 50 110 BW=DC to 20MHz, 15V output types 65 110 TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Specication All output types -40 85 Storage -55 125 0305MC, 0505MEC, 0312MC, 0315MC 19 C Case temperature rise above 0303MC, 0309MC, 0503MC 25 ambient 0505MC, 1205MC 46 All other variants 35 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 NTA 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 NTA 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 NTA 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. TEMPERATURE DERATING GRAPH 1.5 85C 1.0 0.5 Safe Operating Area 0 -40 100 150 0 50 Ambient Temperature (C) 1. 12V input types have typically 3% less load regulation change. www.murata-ps.com/support KDC NTA.I07 Page 2 of 6 Output Power (W)