MEF1 MURATA-PS | Alldatasheet

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Isolated 1W Regulated Single Output DC-DC Converters KDC_MEF1.E01 Page 1 of 9 www.murata.com www.murata.com For full details go to https://www.murata.com/en- global/products/power/rohs SELECTION GUIDE Order Code Nominal Input Voltage Output Voltage Output Current Ripple & Noise (Typ.) Ripple & Noise (Max.) Input Current (Typ.) Efficiency (Min.) Efficiency (Typ.) Isolation Capacitance MTTF1 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 MEF1S1203SPC 12 3.3 303 11 35 120 65 69 40 511 MEF1S1205SPC 12 5 200 10 35 115 69 73.5 60 1044 MEF1S2403SPC 24 3.3 303 13 40 60 64 69 35 580 MEF1S2405SPC 24 5 200 13 40 55 68 73 45 834 3.5kVDC Isolation Part Numbers MEF1S0303SP3C 3.3 3.3 303 11 35 460 63 66 40 495 MEF1S0305SP3C 3.3 5 200 9 35 430 68 71 30 867 MEF1S0503SP3C 5 3.3 303 8 30 290 65 68.5 40 665 MEF1S0505SP3C 5 5 200 10 40 275 69 73 50 1051 MEF1S1203SP3C 12 3.3 303 11 35 120 65 69 40 511 MEF1S1205SP3C 12 5 200 10 35 115 69 73.5 60 1044 MEF1S2403SP3C 24 3.3 303 13 40 60 64 69 35 580 MEF1S2405SP3C 24 5 200 13 40 55 68 73 45 834 INPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Voltage range Continuous operation, 3.3V input types 3.135 3.3 3.465 VContinuous operation, 5V input types 4.75 5 5.25 Continuous operation, 12V input types 11.4 12 12.6 Continuous operation, 24V input types 22.8 24 25.2 Reflected ripple current 5 20 mA p-p OUTPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Voltage set point accuracy 3.3V Output ± 2.5 %5V Output ± 2 Rated power TA= -40°C to 85°C 1W Line regulation High V IN to low VIN 0.25 %/% Load regulation 10% load to rated load 0.3 1 % ISOLATION CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Isolation test voltage SPC Versions Flash tested for 1 second 1000 VDCSP3C Versions Flash tested for 1 minute 3500 Resistance Viso= 1kVDC 10 GΩ GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Switching frequency 0303 45 kHz5V input types 50 12V input types & 0305 60 24V input types 75 1. Calculated using MIL-HDBK-217F with nominal input voltage at full load. All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.

FEATURES

„UL60950 recognised „Short circuit protection „Operation to zero load „Output regulation <1% „Single isolated output „1kVDC or 3.5kVDC isolation options ‘Hi Pot T est’ „3.3V, 5V, 12V & 24V inputs „3.3V & 5V outputs „SMD construction „Fully encapsulated with toroidal magnetics

DESCRIPTION

The MEF1 series of DC-DC converters is used where a tightly regulated supply is required. They are ideal for situations where the input voltage is not tightly controlled. The single rail regulated output makes the ideal choice to power sensors, such as pressure transducers, hall effect sensors and mass airflow sensors.

Isolated 1W Regulated Single Output DC-DC Converters KDC_MEF1.E01 Page 2 of 9 www.murata.com TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Specification All output types -40 85 °CCase temperature above ambient 40 Storage -50 125 Cooling Free air convection ABSOLUTE MAXIMUM RATINGS Short-circuit protection Continuous Lead temperature 1.5mm from case for 10 seconds 260°C Wave Solder Wave Solder profile not to exceed the profile recommended in IEC 61760-1 Section 6.1.3. Please refer to application notes for further information. Input voltage VIN, MEF1S03 types 4V Input voltage VIN, MEF1S05 types 7V Input voltage VIN, MEF1S12 types 18V Input voltage VIN, MEF1S24 types 28V

Isolated 1W Regulated Single Output DC-DC Converters KDC_MEF1.E01 Page 3 of 9 www.murata.com 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 MEF1 series of DC-DC converters are all 100% production tested at their stated isolation voltage. This is 1kVDC for 1 second for SPC versions and 3.5kVDC for 1 minute for SP3C versions. A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?” The MEF1 has been recognised by Underwriters Laboratory for functional insulation, 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 materi- als, construction and environment. The MEF1 series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enamelled 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 recognised 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. SAFETY APPROVAL The MEF1 series has been recognised by Underwriters Laboratory (UL) to UL 60950 for functional insulation, file number E151252 applies. The MEF1 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 defined below. MEF1S03xxxC: 600mA MEF1S05xxxC: 400mA MEF1S12xxxC: 160mA MEF1S24xxxC: 100mA All fuses should be UL approved and rated to at least the maximum allowable DC input voltage. RoHS COMPLIANCE INFORMATION This series is compatible with RoHS soldering systems with a peak wave solder temperature of 260ºC for 10 seconds. Please refer to application notes for further information. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin over Nickel Preplate. This series is backward compatible with Sn/Pb soldering systems. For further information, please visit www.murata-ps.com/rohs PART NUMBER STRUCTURE MEF 1 S XX XX S P X C Series name Power rating Output type S - Single D - Dual T - Triple Q - Quad RoHS compliant Package type S - SIP D - DIP M - Surface mount Z - ZIP Output voltage Input voltage Short circuit protection Optional 3kVDC isolation

Isolated 1W Regulated Single Output DC-DC Converters KDC_MEF1.E01 Page 4 of 9 www.murata.com CHARACTERISATION TEST METHODS Ripple & Noise Characterisation Method Ripple and noise measurements are performed with the following test configuration. C1 1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC-DC converter C2 10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC-DC converter with an ESR of less than 100mΩ at 100 kHz C3 100nF multilayer ceramic capacitor, general purpose R1 450Ω resistor, carbon film, ±1% tolerance R2 50Ω BNC termination T1 3T of the coax cable through a ferrite toroid RLOAD Resistive load to the maximum power rating of the DC-DC converter. Connections should be made via twisted wires Measured values are multiplied by 10 to obtain the specified values. Differential Mode Noise Test Schematic OSCILLOSCOPE YI N P U T SUPPLY C1 C2 C3 R1 T1 R2 Input Output DC/DC Converter RL O A D + + APPLICATION NOTES Capacitive loading and start up Typical start up times for this series, with a typical input voltage rise time of 2.2μs and output capacitance of 10μF, are shown in the table below. The product series will start into a capacitance of 47μF with an increased start time, however, the maximum recommended output capacitance is 10μF. Start-up time μs MEF1S0303SPC 310 MEF1S0305SPC 550 MEF1S0503SPC 225 MEF1S0505SPC 460 MEF1S1203SPC 185 MEF1S1205SPC 390 MEF1S2403SPC 160 MEF1S2405SPC 430 MEF1S0303SP3C 310 MEF1S0305SP3C 550 MEF1S0503SP3C 225 MEF1S0505SP3C 460 MEF1S1203SP3C 185 MEF1S1205SP3C 390 MEF1S2403SP3C 160 MEF1S2405SP3C 430 MEF1S0305SP3C

Isolated 1W Regulated Single Output DC-DC Converters KDC_MEF1.E01 Page 5 of 9 www.murata.com TEMPERATURE DERATING GRAPH 150100500-40 0.5 1.0 1.5 Safe Operating Area 85°C Ambient Temperature (°C) Output Power (W)

Isolated 1W Regulated Single Output DC-DC Converters KDC_MEF1.E01 Page 6 of 9 www.murata.com EFFICIENCY VS LOAD 3.3V Input 5V Input 12V Input 24V Input 0 1 02 03 04 05 06 07 08 09 0 1 0 0 Efficiency (%) Load (%) MEF1S0303SPC MEF1S0305SPC 0 1 02 03 04 05 06 07 08 09 0 1 0 0 Efficiency (%) Load (%) MEF1S1205SPC MEF1S1203SPC 0 1 02 03 04 05 06 07 08 09 0 1 0 0 Efficiency (%) Load (%) MEF1S2405SPC MEF1S2403SPC 0 1 02 03 04 05 06 07 08 09 0 1 0 0 Efficiency (%) Load (%) MEF1S0503SPC MEF1S0505SPC

Isolated 1W Regulated Single Output DC-DC Converters KDC_MEF1.E01 Page 7 of 9 www.murata.com PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS PIN CONNECTIONS - SPC Pin Function 1+ V IN 2- V in 4- V OUT 6+ V OUT PIN CONNECTIONS - SP3C Pin Function 1+ V IN 2- V IN 5- V OUT 7+ V OUT Weight: 1.6g Unless otherwise stated all dimensions in mm (inches) ±0.05mm (0.002”). Controlling dimension is mm. For SIP products, from date code D2224 onwards, products have an embossed logo on the top of the case. Prior to this date, SIP products have a flat surface finish. 15.24 [0.600] 0.50 [0.020] 2.52 1.54 [ 0.099 0.061] 2.54 [0.100] 0.40 [0.016] MIN 1.45 1.00 [ 0.057 0.039 ] 10.15 [0.400] MAX 12 5 7 5.08 [0.200] 0.25 [0.010] 19.65 [0.774] MAX 12.70 [0.500] 0.50 [0.020] 2.52 1.54 [ 0.099 0.061 2.54 [0.100] 0.40 [0.016] MIN 1.45 1.00 [ 0.057 0.039 ] 10.15 [0.400] MAX 6.15 [0.242] MAX 12 4 6 5.08 [0.200] 19.65 [0.774] MAX 6.15 [0.242] MAX MEF1S0505SPC XYYWW MEF1S0505SP3C XYYWW SPC SP3C

Isolated 1W Regulated Single Output DC-DC Converters KDC_MEF1.E01 Page 8 of 9 www.murata.com PACKAGE SPECIFICATIONS (Continued) RECOMMENDED FOOTPRINT DETAILS TUBE OUTLINE DIMENSIONS

7 Pin SIP Tube

Tube Quantity : 25 All dimensions in mm ±0.25mm (inches ±0.01). 1.15 (0.045) 1.00 (0.039)Ø 2.54 (0.1) 2.54 (0.1)

4 HOLES

Ø 0.1 (0.004) 1.15 (0.045) 1.00 (0.039) 2.54 (0.1) 2.54 (0.1) 0.1 (0.004) 5.0 [0.197] 12.43 [0.489] 18.0 [0.709] 9.3 [0.366] Unless otherwise specified all dimensions in mm [inches] ±0.55mm [0.022]. Tube Length : 520mm [20.472] ±2.0 [0.079].

Isolated 1W Regulated Single Output DC-DC Converters KDC_MEF1.E01 Page 9 of 9 www.murata.com Murata Power Solutions (Milton Keynes) Ltd. 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. © 2022 Murata Power Solutions (Milton Keynes) Ltd. This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: https://www.murata.com/en-eu/products/power/requirements DISCLAIMER Unless otherwise stated in the datasheet, all products are designed for standard commercial and industrial applications and NOT for safety-critical and/or life-critical applications. Particularly for safety-critical and/or life-critical applications, i.e. applications that may directly endanger or cause the loss of life, inflict bodily harm and/or loss or severe damage to equipment/property, and severely harm the environment, a prior explicit written approval from Murata is strictly required. Any use of Murata standard prod- ucts for any safety-critical, life-critical or any related applications without any prior explicit written approval from Murata shall be deemed unauthorised use. These applications include but are not limited to:

  • Aircraft equipment
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  • Data Processing equipment Murata makes no express or implied warranty, representation, or guarantee of suitability, fitness for any particular use/purpose and/or compatibility with any applica- tion or device of the buyer, nor does Murata assume any liability whatsoever arising out of unauthorised use of any Murata product for the application of the buyer. The suitability, fitness for any particular use/purpose and/or compatibility of Murata product with any application or device of the buyer remain to be the responsibility and liability of the buyer. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards that anticipate dangerous consequences of failures, moni- tor failures and their consequences, lessen the likelihood of failures that might cause harm, and take appropriate remedial actions. Buyer will fully indemnify and hold Murata, its affiliated companies, and its representatives harmless against any damages arising out of unauthorised use of any Murata products in any safety-critical and/ or life-critical applications. Remark: Murata in this section refers to Murata Manufacturing Company and its affiliated companies worldwide including, but not limited to, Murata Power Solutions.