MEF1 Series www.murata-ps.com Isolated 1W Regulated Single Output DC/DC Converters SELECTION GUIDE Order Code V V mA mVp-p mA % % pF kHrs MEF1S0303SPC 3.3 3.3 303 11 35 460 63 66 40 495 MEF1S0305SPC 3.3 5 200 9 35 430 68 71 30 867 MEF1S0503SPC 5 3.3 303 8 30 290 65 68.5 40 665 MEF1S0505SPC 5 5 200 10 40 275 69 73 50 1051 FEATURES MEF1S1203SPC 12 3.3 303 11 35 120 65 69 40 511 UL60950 recognised MEF1S1205SPC 12 5 200 10 35 115 69 73.5 60 1044 MEF1S2403SPC 24 3.3 303 13 40 60 64 69 35 580 Short circuit protection MEF1S2405SPC 24 5 200 13 40 55 68 73 45 834 Operation to zero load 3.5kVDC Isolation Part Numbers MEF1S0303SP3C 3.3 3.3 303 11 35 460 63 66 40 495 Output regulation <1% MEF1S0305SP3C 3.3 5 200 9 35 430 68 71 30 867 3 Power density 0.85W/cm MEF1S0503SP3C 5 3.3 303 8 30 290 65 68.5 40 665 MEF1S0505SP3C 5 5 200 10 40 275 69 73 50 1051 Single isolated output MEF1S1203SP3C 12 3.3 303 11 35 120 65 69 40 511 UL 94V-0 package material MEF1S1205SP3C 12 5 200 10 35 115 69 73.5 60 1044 2 Footprint from 1.17cm MEF1S2403SP3C 24 3.3 303 13 40 60 64 69 35 580 MEF1S2405SP3C 24 5 200 13 40 55 68 73 45 834 1kVDC or 3.5kVDC isolation options INPUT CHARACTERISTICS 3.3V, 5V, 12V & 24V input Parameter Conditions Min. Typ. Max. Units 3.3V & 5V output Continuous operation, 3.3V input types 3.135 3.3 3.465 SMD construction Continuous operation, 5V input types 4.75 5 5.25 Voltage range V Continuous operation, 12V input types 11.4 12 12.6 Fully encapsulated with toroidal magnetics Continuous operation, 24V input types 22.8 24 25.2 Reected ripple current 5 20 mA p-p DESCRIPTION The MEF1 series of DC/DC converters is used OUTPUT CHARACTERISTICS where a tightly regulated supply is required. They Parameter Conditions Min. Typ. Max. Units are ideal for situations where the input voltage 3.3V Output 2.5 Voltage set point accuracy % is not tightly controlled. The single rail regulated 5V Output 2 output makes the ideal choice to power sensors, Rated power TA= -40C to 85C 1W such as pressure transducers, hall effect sensors Line regulation High VIN to low VIN 0.25 %/% and mass airow sensors. Load regulation 10% load to rated load 0.3 1 % ABSOLUTE MAXIMUM RATINGS Short-circuit protection Continuous Lead temperature 1.5mm from case for 10 seconds 260C Internal power dissipation 450mW Input voltage VIN, MEF1S03 types 4V Input voltage VIN, MEF1S05 types 7V Input voltage VIN, MEF1S12 types 18V Input voltage VIN, MEF1S24 types 28V 1. 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 MEF1.C02 Page 1 of 7 Nominal Input Voltage Output Voltage Output Current Ripple & Noise (Typ.) Ripple & Noise (Max.) Input Current (Typ.) Efciency (Min.) Efciency (Typ.) Isolation Capacitance 1 MTTFMEF1 Series Isolated 1W Regulated Single Output DC/DC Converters ISOLATION CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units SPC Versions Flash tested for 1 second 1000 Isolation test voltage VDC SP3C Versions Flash tested for 1 minute 3500 Resistance Viso= 1kVDC 10 G GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units 0303 45 5V input types 50 Switching frequency kHz 12V input types & 0305 60 24V input types 75 TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Specication All output types -40 85 Case temperature above ambient 40 C Storage -50 125 Cooling Free air convection TEMPERATURE DERATING GRAPH RoHS COMPLIANCE INFORMATION 1.5 This series is compatible with RoHS soldering 85C systems with a peak wave solder temperature of 1.0 260C for 10 seconds. The pin termination nish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin over Nickel Preplate. This series Safe Operating Area 0.5 is backward compatible with Sn/Pb soldering systems. 0 -40 100 150 0 50 Ambient Temperature (C) For further information, please visit www.murata-ps.com/rohs www.murata-ps.com/support KDC MEF1.C02 Page 2 of 7 Output Power (W)