NMH0524DCNMH www.murata-ps.com IsolaIsolaIsolated 2W Dual Output DC/DC Converterted 2W Dual Outed 2W Dual Ou D SELECTION GUIDECTION GUIDE Nominal Input Input OutputOutput OutputOutput IsolaIsolationtion InputInput Current at Efciency Voltage Current Capacitance Voltage Rated Load Package Order Code Style V V mA mA % pF NMH0524DC 5 24 42 476 84 TBD DIP NMG0524SC INPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Voltage range Continuous operation, 5V input types 4.5 5 5.5 V OUTPUT CHARACTERISTICS FEATURES Parameter Conditions Min. Typ. Max. Units 1 RoHS compliant Rated Power TA=-40C to 70C 2W 3 Voltage Set Point Accuracy See tolerance envelope Power density 1.36W/cm Line regulation High VIN to low VIN 1.0 1.2 %/% UL 94V-0 package material Load Regulation 10% load to rated load 3.5 10 % Ripple and Noise BW=DC to 20MHz 180 300 mV p-p No heatsink required Industry standard pinout ISOLATION CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units 1kVDC isolation Isolation test voltage Flash tested for 1 second 1000 VDC Internal SMD construction Resistance Viso= 500V 1 10 G Fully encapsulated with toroidal GENERAL CHARACTERISTICS magnetics Parameter Conditions Min. Typ. Max. Units Switching frequency 5V input types 75 kHz No external components required No electrolytic or tantalum capacitors TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units DESCRIPTION Specication All output types -40 70 The NMH0524DC DC/DC converter is ideally Storage -50 130 C suited for providing dual rail supplies on single rail Case Temperature above 30 boards with the added benet of galvanic isolation ambient to reduce circuit noise. Cooling Free air convection ABSOLUTE MAXIMUM RATINGS Lead temperature 1.5mm from case for 10 seconds 300C Internal power dissipation 850mW Input voltage VIN 7V 1. See derating graph. 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 NMH0524DC.B01 Page 1 of 3 OOOOOBOBSOLETEOBSOLETESOOLLETTEE Recommended AlternativeTypical Load Line NMH0524DC Isolated 2W Dual Output DC/DC Converter TEMPERATURE DERATING GRAPH TOLERANCE ENVELOPE 3 +10% +2.5% 70C +1.5% 2 V NOM -2% Safe Operating -7.5% 1 Area 0 100 10 25 50 75 -40 0 50 100 150 Output Load Current (%) Ambient Temperature (C) 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 NMH0524DC DC/DC converter is 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 NMH0524DC, 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 NMH0524DC has a toroidal isolation transformer, 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. PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS PIN CONNECTIONS 0.77 (19.50) Pin Function 1-VIN 7NC 0.39 (9.80) 8OV NMH0524DC XYYWWi 9+VOUT 11 -VOUT 14 +VIN 0.303 (7.70) 0.181 (4.60) 0.142 (3.60) 0.1 (2.54) 0.022 (0.55) 0.0178 (0.45) 0.043 (1.09) 1 7 0.3 (7.62) 0.0118 (0.30) 0.0078 (0.20) 14 11 9 8 0.084 0.6 (15.24) (2.13) Weight: 2.85g 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. www.murata-ps.com/support KDC NMH0524DC.B01 Page 2 of 3 Output Power (W) Output Voltage