MTU1 Series www.murata-ps.com Isolated 1W Single & Dual Output SM DC/DC Converters SELECTION GUIDE 1 Order Code VV mA % mVp-p mA % % pF kHrs MTU1S0305MC 3.3 5 200 8.9 11.0 26 60 367 79 81 14 7660 MTU1S0505MC 5 5 200 7.3 9 35 60 241 80 83 19 5664 MTU1S0509MC 5 9 111 6.1 7.5 15 25 233 83 86 20 5488 FEATURES MTU1S0512MC 5 12 83 5.6 7.5 15 25 230 84 87 21 5186 Patent Protected MTU1S0515MC 5 15 67 5.3 6.5 15 25 230 84 87 22 4773 MTU1S1205MC 12 5 200 5.6 8 20 40 99 80 84 22 5641 UL60950 recognised MTU1S1209MC 12 9 111 3.9 6 15 25 96 82 87 31 5467 2 Footprint over pins 0.69cm MTU1S1212MC 12 12 83 3.5 6 10 25 95 83 88 40 5165 Single & dual isolated output MTU1S1215MC 12 15 67 3.2 5 10 25 95 84 88 35 4753 MTU1D0305MC 3.3 5 100 8.0 9.5 18 35 356 80 83 17 5292 1kVDC Isolation Hi Pot Test MTU1D0505MC 5 5 100 6.6 8 14 30 235 81 84 18 5053 Efciency up to 88% (Typ.) MTU1D0509MC 5 9 56 5.6 6.5 7 20 229 83 86 21 5078 MTU1D0512MC 5 12 42 5.0 6 8 20 228 83 87 19 5545 MSL Level 1 MTU1D0515MC 5 15 33 5.1 6.5 8 20 224 84 88 22 5293 3 Power density 1.71W/cm MTU1D1205MC 12 5 100 4.3 5 14 30 98 80 85 18 4335 MTU1D1209MC 12 9 56 3.1 4 7 20 95 82 87 27 4601 Wide temperature performance at full MTU1D1212MC 12 12 42 3.0 4 8 20 94 84 88 35 4834 1 Watt load, 40C to 85C MTU1D1215MC 12 15 33 2.6 3.5 8 20 94 84 88 35 4782 UL 94V-0 Package material INPUT CHARACTERISTICS 3.3V, 5V & 12V Input Parameter Conditions Min. Typ. Max. Units 5V, 9V, 12V & 15V single & dual outputs Continuous operation, 3.3V input types 2.97 3.3 3.63 Voltage range Continuous operation, 5V input types 4.5 5.0 5.5 V Toroidal magnetics Continuous operation, 12V input types 10.8 12.0 13.2 Custom solutions available 3.3V input types 10 Single output types 5V input types 6 Multi-layer ceramic capacitors Reected ripple current mA p-p 12V input types 5 Dual output types All variants 5 PRODUCT OVERVIEW The MTU1 series is a new range of miniature ISOLATION CHARACTERISTICS surface mount, high performance 1W DC/DC Parameter Conditions Min. Typ. Max. Units converters. With a footprint reduction of over 50% Isolation voltage Flash tested for 1 second 1000 VDC from the previous generation of 1W SMD DC/DC, Resistance Viso= 1000VDC 10 G the MTU1 series offers 1W of available output power over the full industrial temperature range of GENERAL CHARACTERISTICS -40C to 85C. The MTU1 series is more efcient Parameter Conditions Min. Typ. Max. Units and offers improved regulation performance for MTU1D0305MC 70 applications where a wide output voltage variation 3.3V & 5V input, all output types 82 can not be tolerated. (except MTU1D0305MC) Switching frequency kHz The devices are suitable for all applications where 12V input, single output types 90 high volume production is envisaged. 12V intput, dual output types 100 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 1.1 %/% 1. If components are required in tape and reel format sufx order code with -R, e.g. MTU10505MC-R. For full details go to 2. Calculated using MIL-HDBK-217 FN2 calculation model with nominal input voltage at full load. www.murata-ps.com/rohs 3. See ripple & noise characterisation method. All specications typical at TA=25C, nominal input voltage and rated output current unless otherwise specied. www.murata-ps.com/support KDC MTU.C02 Page 1 of 8 Nominal Input Voltage Output Voltage Output Current Load Regulation (Typ.) Load Regulation (Max) Ripple & Noise 3 (Typ.) Ripple & Noise 3 (Max.) Input Current at Full Load Efciency (Min.) Efciency (Typ.) Isolation Capacitance 2 MTTFMTU1 Series Isolated 1W Single & Dual Output SM DC/DC Converters ABSOLUTE MAXIMUM RATINGS Input voltage VIN, MTU1S03 types 5.5V Input voltage VIN, MTU1S05 types 7V Input voltage VIN, MTU1S12 types 15V TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Specication All output types -40 85 Storage -55 125 MTU1xxx05MC 15 C 1 Case temperature rise above ambient MTU1xxx09MC 14 MTU1xxx12MC & MTU1xxx15MC 11 Cooling Free air convection 1. Measured after 1 hour continuous operation at nominal VIN full load at the center of each PCB. TECHNICAL NOTES ISOLATION VOLTAGE REPEATED HIGH-VOLTAGE ISOLATION TESTING Hi Pot Test, Flash Tested, Withstand Voltage, Proof Voltage, Dielectric Withstand Volt- It is well known that repeated high-voltage isolation testing of a barrier component can age & Isolation Test Voltage are all terms that relate to the same thing, a test voltage, actually degrade isolation capability, to a lesser or greater degree depending on materi- applied for a specied time, across a component designed to provide electrical isolation, als, construction and environment. The MTU1 series has toroidal isolation transformers, to verify the integrity of that isolation. with no additional insulation between primary and secondary windings of enameled Murata Power Solutions MTU1 series of DC/DC converters are all 100% production tested wire. While parts can be expected to withstand several times the stated test voltage, at their stated isolation voltage. This is 1kVDC for 1 second. the isolation capability does depend on the wire insulation. Any material, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when A question commonly asked is, What is the continuous voltage that can be applied subject to very high applied voltages thus implying that the number of tests should be across the part in normal operation strictly limited. We therefore strongly advise against repeated high voltage isolation test- The MTU1 has been recognized by Underwriters Laboratory for functional insulation, both ing, but if it is absolutely required, that the voltage be reduced by 20% from specied input and output should normally be maintained within SELV limits i.e. less than 42.4V test voltage. peak, or 60VDC. The isolation test voltage represents a measure of immunity to transient This consideration equally applies to agency recognized parts rated for better than func- voltages and the part should never be used as an element of a safety isolation system. tional isolation where the wire enamel insulation is always supplemented by a further The part could be expected to function correctly with several hundred volts offset applied insulation system of physical spacing or barriers. continuously across the isolation barrier but then the circuitry on both sides of the bar- rier 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. SAFETY APPROVAL The MTU1 series has been recognized by Underwriters Laboratory (UL) to UL 60950 for functional insulation to a maximum product PCB temperature of 120C. Forced air cooling may be used to maintain this temperature requirement. File number E151252 applies. The MTU1 Series of converters are not internally fused so to meet the requirements of UL 60950 an anti-surge input line fuse should always be used with ratings as dened below. MTU1X03xxxC: 0.750A MTU1X05xxxC: 0.125A MTU1X12xxxC: 0.315A All fuses should be UL approved and rated to at least the maximum allowable DC input voltage. www.murata-ps.com/support KDC MTU.C02 Page 2 of 8