NMH0524DC NMH www.murata-ps.com OBSOLETE Isolated 2W Dual Ou Output DC/DC D Converter SELECTION CTION GUIDE NMH0524DC Output Voltage Output Current V V mA 5 ±24 ±42 Input Isolation Current at Efficiency Capacitance Package Rated Load Style mA % pF 476 84 DIP TBD Recommended Alternative Order Code Nominal Input Voltage NMG0524SC INPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Voltage range Continuous operation, 5V input types 4.5 5 5.5 V Min. Typ. Max. Units 2 W 1.0 3.5 180 1.2 10 300 %/% % mV p-p Max. Units OUTPUT CHARACTERISTICS FEATURES Parameter RoHS compliant Power density 1.36W/cm3 UL 94V-0 package material No heatsink required Rated Power1 Voltage Set Point Accuracy Line regulation Load Regulation Ripple and Noise Conditions TA=-40°C to 70°C See tolerance envelope High VIN to low VIN 10% load to rated load BW=DC to 20MHz Industry standard pinout ISOLATION CHARACTERISTICS 1kVDC isolation Parameter Conditions Min. Typ. Internal SMD construction Isolation test voltage Resistance Flash tested for 1 second Viso= 500V 1000 1 10 Fully encapsulated with toroidal magnetics GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. No external components required Switching frequency 5V input types No electrolytic or tantalum capacitors TEMPERATURE CHARACTERISTICS DESCRIPTION The NMH0524DC DC/DC converter is ideally suited for providing dual rail supplies on single rail boards with the added benefit of galvanic isolation to reduce circuit noise. Max. 75 Parameter Conditions Min. Specification Storage All output types -40 -50 Case Temperature above ambient Cooling VDC GΩ Typ. Units kHz Max. 70 130 Units °C 30 Free air convection ABSOLUTE MAXIMUM RATINGS Lead temperature 1.5mm from case for 10 seconds Internal power dissipation Input voltage VIN 300°C 850mW 7V 1. See derating graph. All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified. For full details go to www.murata-ps.com/rohs www.murata-ps.com/support KDC_NMH0524DC.B01 Page 1 of 3 NMH0524DC Isolated 2W Dual Output DC/DC Converter TEMPERATURE DERATING GRAPH TOLERANCE ENVELOPE +10% 70°C 2 1 0 -40 Output Voltage Output Power (W) 3 Safe Operating Area 100 50 0 Ambient Temperature (°C) +1.5% VNOM +2.5% oad Line -2% -7.5% 10 150 Typical L 75 50 25 Output Load Current (%) 100 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 specified 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 specific 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 specified 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 0.39 (9.80) 0.77 (19.50) Pin Function NMH0524DC 1 7 8 9 11 14 -VIN NC OV +VOUT -VOUT +VIN XYYWWi 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) 14 0.084 (2.13) 11 9 8 0.0118 (0.30) 0.0078 (0.20) 0.6 (15.24) 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. Weight: 2.85g www.murata-ps.com/support KDC_NMH0524DC.B01 Page 2 of 3 NMH0524DC Isolated 2W Dual Output DC/DC Converter PACKAGE SPECIFICATIONS (continued) RECOMMENDED FOOTPRINT DETAILS 0.045 (1.15) Ø 0.039 (1.00) 5 HOLES 0.00394 (0.1) 0.1 (2.54) 0.1 (2.54) TUBE OUTLINE DIMENSIONS Unless otherwise stated all dimensions in inches (mm) ±0.5mm. Tube length (14 Pin DIP) : 20.47 (520mm ±2mm). Tube Quantity : 25 RoHS COMPLIANCE INFORMATION The NMH0524DC is compatible with RoHS soldering systems with a peak wave solder temperature of 300°C for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this series are backward compatible with Sn/Pb soldering systems. For further information, please visit www.murata-ps.com/rohs Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/ Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2013 Murata Power Solutions, Inc. www.murata-ps.com/support KDC_NMH0524DC.B01 Page 3 of 3