MEE1 Series
Isolated 1W Single Output DC/DC Converters
KDC_MEE1.A01_D6 Page 1 of 7
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SELECTION GUIDE
Order Code
Nominal Input Voltage
Output Voltage
Output Current
Load Regulation (Typ)
Load Regulation (Max)
Ripple & Noise (Typ)
Ripple & Noise (Max)
Input Current at Rated Load
Efficiency (Min)
Efficiency (Typ)
Isolation Capacitance (Typ)
MTTF
Package Style
V V mA % mVp-p mA % pF kHrs
MEE1S0303SC 3.3 3.3 303 10 12 26 50 377 76 78.5 42 3852
SIP
MEE1S0305SC 3.3 5 200 9.2 11 23 50 360 79 81.5 44 4008
MEE1S0309SC 3.3 9 111 10 12 15 40 361 79 81.5 47 4930
MEE1S0312SC 3.3 12 83 8.7 11 14 40 352 81 84 48 4040
MEE1S0315SC 3.3 15 67 7.8 10 12 35 350 82 84.5 50 3792
MEE1S0503SC 5 3.3 303 8 10 22 45 246 76 80 39 3213
MEE1S0505SC 5 5 200 5.6 7 19 40 237 80 83 46 3990
MEE1S0509SC 5 9 111 6.8 9 13 35 238 80 83.5 53 4526
MEE1S0512SC 5 12 83 6.5 8 11 35 233 81 85 49 3756
MEE1S0515SC 5 15 67 5.7 8 9 30 230 83 85.5 46 3240
MEE1S1205SC 12 5 200 5 7 16 40 97 79 83.5 47 3857
MEE1S1209SC 12 9 111 5.8 8 12 35 97 79 84 77 4370
MEE1S1212SC 12 12 83 4.8 6 10 35 97 82 85 79 3774
MEE1S1215SC 12 15 67 4.2 7 9 35 95 81 86.5 81 3779
MEE1S1505SC 15 5 200 4.2 6 15 40 79 77 83.5 41 3312
MEE1S1509SC 15 9 111 5.1 7 12 35 79 77 83 65 3451
MEE1S1512SC 15 12 83 4.3 5 11 35 77 78 85 77 3940
MEE1S1515SC 15 15 67 3.8 5 8 30 76 83 86.5 100 3420
MEE1S2405SC 24 5 200 3.6 5 19 50 49 75 83 51 3983
MEE1S2409SC 24 9 111 4 6 17 40 50 74 83 70 4255
MEE1S2412SC 24 12 83 3.4 5 11 35 49 79 85.5 89 3991
MEE1S2415SC 24 15 67 3 5 9 35 49 78 86 101 3532
MEE1S0303DC 3.3 3.3 303 10 12 26 50 377 76 78.5 42 3852
DIP
MEE1S0305DC 3.3 5 200 9.2 11 23 50 360 79 81.5 44 4008
MEE1S0309DC 3.3 9 111 10 12 15 40 361 79 81.5 47 4930
MEE1S0312DC 3.3 12 83 8.7 11 14 40 352 81 84 48 4040
MEE1S0315DC 3.3 15 67 7.8 10 12 35 350 82 84.5 50 3792
MEE1S0503DC 5 3.3 303 8 10 22 45 246 76 80 39 3213
MEE1S0505DC 5 5 200 5.6 7 19 40 237 80 83 46 3990
MEE1S0509DC 5 9 111 6.8 9 13 35 238 80 83.5 53 4526
MEE1S0512DC 5 12 83 6.5 8 11 35 233 81 85 49 3756
MEE1S0515DC 5 15 67 5.7 8 9 30 230 83 85.5 46 3240
MEE1S1205DC 12 5 200 5 7 16 40 97 79 83.5 47 3857
MEE1S1209DC 12 9 111 5.8 8 12 35 97 79 84 77 4370
MEE1S1212DC 12 12 83 4.8 6 10 35 97 82 85 79 3774
MEE1S1215DC 12 15 67 4.2 7 9 35 95 81 86.5 81 3779
MEE1S1505DC 15 5 200 4.2 6 15 40 79 77 83.5 41 3312
MEE1S1509DC 15 9 111 5.1 7 12 35 79 77 83 65 3451
MEE1S1512DC 15 12 83 4.3 5 11 35 77 78 85 77 3940
MEE1S1515DC 15 15 67 3.8 5 8 30 76 83 86.5 100 3420
MEE1S2405DC 24 5 200 3.6 5 19 50 49 75 83 51 3983
MEE1S2409DC 24 9 111 4 6 17 40 50 74 83 70 4255
MEE1S2412DC 24 12 83 3.4 5 11 35 49 79 85.5 89 3991
MEE1S2415DC 24 15 67 3 5 9 35 49 78 86 101 3532
1. Calculated using MIL-HDBK-217F FN2 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
n UL60950 recognition pending
n Operation to zero load
n Single isolated output
n 1kVDC isolation
n Efficiency up to 87% typical
n Wide temperature performance at full
1 watt load, –40°C to 85°C
n Power density from 1.305W/cm3
n Industry standard pinout
n 3.3V, 5V, 12V, 15V & 24V input
n 3.3V, 5V, 9V, 12V and 15V output
n Custom solutions available
n Pin compatible with LME, NME, NKE
& NML series
n PCB mounting
DESCRIPTION
The MEE1 series is the new high performance
version of our 1W NME series. The MEE1 series
is more efficient and offers improved regulation
performance for applications where a wide output
voltage variation can not be tolerated. They are
ideally suited for providing local supplies on
control system boards with the added benefit
of 1kVDC galvanic isolation to reduce switching
noise.
MEE1 Series
Isolated 1W Single Output DC/DC Converters
KDC_MEE1.A01_D6 Page 2 of 7
www.murata-ps.com/support
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Voltage range
Continuous operation, 3.3V input types 2.97 3.3 3.63
V
Continuous operation, 5V input types 4.5 5.0 5.5
Continuous operation, 12V input types 10.8 12.0 13.2
Continuous operation, 15V input types 13.5 15 16.5
Continuous operation, 24V input types 21.6 24 26.4
Reflected ripple current
3.3V, 5V & 12V Input types 5 20
mA p-p
15V Input types 3 10
24V Input types 4 10
OUTPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Rated Power2TA=-40°C to 85°C 1.0 W
Voltage Set Point Accuracy See tolerance envelope
Line regulation High VIN to low VIN
3.3V Input 1.0 1.15 %/%
All other inputs 1.0 1.1
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation test voltage Flash tested for 1 second 1000 VDC
Resistance Viso= 1000VDC 10 GΩ
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Switching frequency
3.3V input types 47
kHz
5V input types 60
12V input types 70
15V input types 77
24V input types 80
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Specification All output types -40 85
°C
Storage -50 125
Case Temperature above ambient MEE1S0303SC 30
All other types 25
Cooling Free air convection
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1.5mm from case for 10 seconds 260°C
Internal power dissipation 450mW
Input voltage VIN, MEE1S03 types 5.5V
Input voltage VIN, MEE1S05 types 7V
Input voltage VIN, MEE1S12 types 15V
Input voltage VIN, MEE1S15 types 18V
Input voltage VIN, MEE1S24 types 28V
TEMPERATURE DERATING GRAPH
150100
50
0
-40
0
0.5
1.0
1.5
Safe Operating Area
85°C
Ambient Temperature (°C)
Output Power (W)
120°C
All specifications typical at TA=25°C, nominal input voltage and rated output current
unless otherwise specified.
MEE1 Series
Isolated 1W Single Output DC/DC Converters
KDC_MEE1.A01_D6 Page 3 of 7
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TOLERANCE ENVELOPES
The voltage tolerance envelopes show typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to
changes in output loading and set point accuracy.
3.3V Input & 0305 5V Output
9V Output 12V Output
15V Output
+8%
+1%
Output Load Current (%)
Output Voltage
-3%
+1%
100
75
50
25
10
+12%
Output Load Current (%)
Output Voltage
-6%
+2%
+2%
100
75
50
25
10
+7%
Output Load Current (%)
Output Voltage
-5%
+2%
100
75
50
25
10
VNOM
+7%
Output Load Current (%)
Output Voltage
-3%
+1%
100
75
50
25
10
VNOM
+6%
+1%
Output Load Current (%)
Output Voltage
-3%
+1%
100
75
50
25
10
MEE1 Series
Isolated 1W Single Output DC/DC Converters
KDC_MEE1.A01_D6 Page 4 of 7
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EFFICIENCY VS LOAD
3.3V Input 5V Input
12V Input 15V Input
24V Input
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 260°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
0
10
20
30
40
50
60
70
80
90
0 10 20 30 40 50 60 70 80 90 100
Efficiency (%)
Load (%)
MEE1S2405SC
MEE1S2409SC
MEE1S2412SC
MEE1S2415SC
90
10080604020
70
50
30
10
0
Load (%)
Efficiency (%)
0
10
20
30
40
50
60
70
80
90
0 10 20 30 40 50 60 70 80 90 100
Efficiency (%)
Load (%)
MEE1S1505SC
MEE1S1509SC
MEE1S1512SC
MEE1S1515SC
90
10080604020
70
50
30
10
0
Load (%)
Efficiency (%)
0
10
20
30
40
50
60
70
80
90
0 10 20 30 40 50 60 70 80 90 100
Efficiency (%)
Load (%)
MEE1S0303SC
MEE1S0305SC
MEE1S0309SC
MEE1S0312SC
MEE1S0315SC
90
10080604020
70
50
30
10
0
Load (%)
Efficiency (%)
0
10
20
30
40
50
60
70
80
90
0 10 20 30 40 50 60 70 80 90 100
Efficiency (%)
Load (%)
MEE1S1205SC
MEE1S1209SC
MEE1S1212SC
MEE1S1215SC
90
10080604020
70
50
30
10
0
Load (%)
Efficiency (%)
0
10
20
30
40
50
60
70
80
90
0 10 20 30 40 50 60 70 80 90 100
Efficiency (%)
Load (%)
MEE1S0503SC
MEE1S0505SC
MEE1S0509SC
MEE1S0512SC
MEE1S0515SC
90
10080604020
70
50
30
10
0
Load (%)
Efficiency (%)
0
10
20
30
40
50
60
70
80
90
0 10 20 30 40 50 60 70 80 90 100
Efficiency (%)
Load (%)
MEE1S0503SC
MEE1S0505SC
MEE1S0509SC
MEE1S0512SC
MEE1S0515SC
0
10
20
30
40
50
60
70
80
90
0 10 20 30 40 50 60 70 80 90 100
Efficiency (%)
Load (%)
MEE1S1505SC
MEE1S1509SC
MEE1S1512SC
MEE1S1515SC
0
10
20
30
40
50
60
70
80
90
0 10 20 30 40 50 60 70 80 90 100
Efficiency (%)
Load (%)
MEE1S0303SC
MEE1S0305SC
MEE1S0309SC
MEE1S0312SC
MEE1S0315SC
MEE1S1205SC
MEE1S1209SC
MEE1S1212SC
MEE1S1215SC
0
10
20
30
40
50
60
70
80
90
0 10 20 30 40 50 60 70 80 90 100
Efficiency (%)
Load (%)
MEE1S2405SC
MEE1S2409SC
MEE1S2412SC
MEE1S2415SC
MEE1 Series
Isolated 1W Single Output DC/DC Converters
KDC_MEE1.A01_D6 Page 5 of 7
www.murata-ps.com/support
APPLICATION NOTES
Minimum and Operation to Zero Load
The minimum load to meet datasheet specification is 10% of the full rated load across the specified input voltage range. Lower than 10% minimum loading will result in
an increase in output voltage, which may rise to typically double the specified output voltage if the output load falls to less than 5%.
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.
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test configuration.
C1 1µF X7R m ultilayer 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
Y INPUT
SUPPLY
C1 C2 C3 R1 T1 R2
Input Output
DC/DC Converter
R LOAD
+
+
-
-
Start-up time Start-up time
µs µs
MEE1S0303XC MEE1S1209XC
MEE1S0305XC MEE1S1212XC
MEE1S0309XC MEE1S1215XC
MEE1S0312XC MEE1S1505XC
MEE1S0315XC MEE1S1509XC
MEE1S0503XC MEE1S1512XC
MEE1S0505XC MEE1S1515XC
MEE1S0509XC MEE1S2405XC
MEE1S0512XC MEE1S2409XC
MEE1S0515XC MEE1S2412XC
MEE1S1205XC MEE1S2415XC
MEE1 Series
Isolated 1W Single Output DC/DC Converters
KDC_MEE1.A01_D6 Page 6 of 7
www.murata-ps.com/support
All dimensions in mm ±0.25mm (inches ±0.01). All pins on a 2.54 (0.1) pitch and within ± 0.25 (0.01) of true position.
Weight: 1.28g (SIP), 1.56g (DIP)
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS PIN CONNECTIONS - 8 PIN DIP
Pin Function
1 -VIN
4 +VIN
5 +VOUT
7 -VOUT
PIN CONNECTIONS - 4 PIN SIP
Pin Function
1 -VIN
2 +VIN
3 -VOUT
4 +VOUT
DIP Package SIP Package
11.48
(0.45)
6.00
(0.236)
0.30 (0.0118)
0.20 (0.0078)
1.69 (0.074)
2.41 (0.109)
7.62
(0.3)
1.25
(0.049)
10.0
(0.394) 0.55 (0.022)
0.45 (0.018)
4.60 (0.181)
3.60 (0.142) 0.55 (0.022)
0.45 (0.018)
6.80 (0.268)
4.60 (0.181)
3.60 (0.142)
0.55 (0.022)
0.45 (0.018)
11.50 (0.453)
9.80 (0.386)
0.30 (0.0118)
0.20 (0.0078)
1.09 (0.043)
1.94 (0.0764)
7.62 (0.3)
7.62 (0.3)
5.08 (0.2)
1 4
57
1 2 3 4
MEE1S0505DC
XYYWW
MEE1S0505SC
XYYWW
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 MEE1 series of DC/DC converters are all 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 MEE1 series, 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 MEE1 series has toroidal isolation transformers, 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.
MEE1 Series
Isolated 1W Single Output DC/DC Converters
KDC_MEE1.A01_D6 Page 7 of 7
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. © 2012 Murata Power Solutions, Inc.
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/
www.murata-ps.com/support
PACKAGE SPECIFICATIONS (continued)
RECOMMENDED FOOTPRINT DETAILS
TUBE OUTLINE DIMENSIONS
8 Pin DIP Tube 4 Pin SIP Tube
8 Pin DIP Package 4 Pin SIP Package
2.54 (0.1)
2.54 (0.1)
1.15 (0.0453)
1.00 (0.0394)
0.1 (0.00394)
4 HOLES
Ø
2.54
(0.1)
2.54
(0.1)
1.15 (0.0453)
1.00 (0.0394)
Ø
0.1 (0.00394)
4 HOLES
Tube Quantity : 35
Unless otherwise stated all dimensions in mm (inches) ±0.5mm.
Tube length (8 Pin DIP) : 520mm ±2mm (20.47).
Tube length (4 Pin SIP) : 520mm ±2mm (20.47).
12.0 (0.472)
14.50 (0.571)
5.10 (0.2)
0.65 (0.026)
5.07 (0.2)
18.00 (0.709)
12.43 (0.489)
5.00 (0.2)
9.30 (0.366)
0.50 (0.020)
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Authorized Distributor
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MEE1S1212SC MEE1S1215DC MEE1S1212DC MEE1S1209SC MEE1S1209DC MEE1S1505DC MEE1S1505SC
MEE1S1509DC MEE1S1509SC MEE1S1512DC MEE1S1205SC MEE1S1512SC MEE1S1215SC MEE1S2412SC
MEE1S0305DC MEE1S2415DC MEE1S1205DC MEE1S1515DC MEE1S2412DC MEE1S2409SC
MEE1S2409DC MEE1S2405SC MEE1S2405DC MEE1S1515SC MEE1S2415SC MEE1S0305SC MEE1S0309DC
MEE1S0515SC MEE1S0303SC MEE1S0309SC MEE1S0505DC MEE1S0515DC MEE1S0512SC MEE1S0512DC
MEE1S0509SC MEE1S0303DC MEE1S0505SC MEE1S0312DC MEE1S0503SC MEE1S0503DC MEE1S0315SC
MEE1S0315DC MEE1S0312SC MEE1S0509DC