1. If components are required in tape and reel format suffix order code with -R, e.g. MTE0505MC-R.
2. Calculated using MIL-HDBK-217 FN2 calculation model with nominal input voltage at full load.
All specifications typical at T
A
=25°C, nominal input voltage and rated output current unless otherwise specified.
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KDC_MTE1.A01_D4
Page 1 of 7
MTTF
2
MTE1 Series
Isolated 1W Single Output SM DC/DC Converters
OUTPUT CHARACTERISTICS
Parameter
Rated power
Voltage set point accuracy
Line regulation
Ripple and noise
Conditions
T
A
=-40°C to 85°C
See tolerance envelope
High V
IN
to low V
IN
BW=DC to 20MHz
Min.
Typ.
Max.
1.0
Units
W
%/%
mV p-p
1.1
25
1.2
70
TEMPERATURE CHARACTERISTICS
Parameter
Specification
Storage
Case temperature rise above ambient
Cooling
Conditions
All output types
All output types
Free air convection
Min.
-40
-50
Typ.
Max.
85
130
20
Units
°C
12.5
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 MTE 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 MTE 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 MTE 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 supplemeMTEd by a further
insulation system of physical spacing or barriers.
TEMPERATURE DERATING GRAPH
1.5
Output Power (W)
1.0
0.5
0
-40
85°C
Safe Operating Area
100
50
0
Ambient Temperature (°C)
150
1. 12V input types have typically 3% less load regulation change.
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KDC_MTE1.A01_D4
Page 2 of 7
MTE1 Series
Isolated 1W Single Output SM DC/DC Converters
TOLERANCE ENVELOPES
The voltage tolerance envelope shows typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to
changes in output loading.
0303, 0503
+12%
+8%
+5%
0305,0309
+8%
Output Voltage
+3%
Output Voltage
+2%
-4%
10
25
50
Output Load Current (%)
75
100
10
25
50
Output Load Current (%)
75
-4%
100
0312, 0315, 0505, 0506, 0509
1209, 1212, 1505
+6%
Output Voltage
+4%
Output Voltage
+2%
+4%
+1%
0%
-3%
-4%
10
25
75
50
Output Load Current (%)
100
10
25
75
50
Output Load Current (%)
100
0512, 0515, 1205,2405
1215, 1509, 1512, 1515, 2409, 2412, 2415
+5%
+3%
+1%
Output
Output Voltage
+2%
0%
+1%
-2%
-4%
10
25
75
50
Output Load Current (%)
100
10
25
50
Output Load Current (%)
75
100
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KDC_MTE1.A01_D4
Page 3 of 7
MTE1 Series
Isolated 1W Single Output SM DC/DC Converters
EFFICIENCY VS LOAD
3.3V Input
5V Input
90
70
Efficiency (%)
90
70
MTE1S0303MC
50
MTE1S0303MC
Efficiency (%)
MTE1S0305MC
MTE1S0309MC
MTE1S0312MC
MTE1S0315MC
50
30
10
MTE1S0503MC
MTE1S0505MC
MTE1S0509MC
MTE1S0512MC
MTE1S0515MC
MTE1S0506MC
MTE1S0503MC
MTE1S0505MC
MTE1S0509MC
MTE1S0512MC
MTE1S0515MC
MTE1S0506MC
30
10
0
20
40
Load (%)
MTE1S0305MC
MTE1S0309MC
MTE1S0312MC
MTE1S0315MC
60
80
100
0
20
40
Load (%)
60
80
100
12V Input
15V Input
90
70
Efficiency (%)
Efficiency (%)
90
70
MTE1S1205MC
MTE1S1209MC
MTE1S1212MC
50
30
10
0
20
40
Load (%)
MTE1S1205MC
MTE1S1209MC
MTE1S1212MC
MTE1S1215MC
50
30
10
MTE1S1505MC
MTE1S1509MC
MTE1S1512MC
MTE1S1515MC
MTE1S1505MC
MTE1S1509MC
MTE1S1512MC
MTE1S1515MC
MTE1S1215MC
60
80
100
0
20
40
Load (%)
60
80
100
24V Input
90
70
Efficiency (%)
50
30
10
0
20
40
Load (%)
MTE1S2405MC
MTE1S2409MC
MTE1S2412MC
MTE1S2415MC
MTE1S2405MC
MTE1S2409MC
MTE1S2412MC
MTE1S2415MC
60
80
100
RoHS COMPLIANCE, MSL AND PSL INFORMATION
This series is compatible with RoHS soldering systems with a peak reflow solder temperature of 245ºC as per
J-STD-020D. The pin termination finish on this product series is Matte Tin over Nickel Preplate. The series is
backward compatible with Sn/Pb soldering systems. The series has a Moisture Sensitivity Level (MSL) 1.
Samples of the product series were tested in accordance with the conditioning described for MSL level 1 in
IPS/J-STD-020D. The product series passed electrical tests and visual inspection criteria.
For further information, please visit: www.murata-ps.com/rohs
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KDC_MTE1.A01_D4
Page 4 of 7
MTE1 Series
Isolated 1W Single Output SM DC/DC Converters
APPLICATION NOTES
Minimum 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.
Start-up time
µs
MTE1S0303MC
MTE1S0305MC
MTE1S0309MC
MTE1S0312MC
MTE1S0315MC
MTE1S0503MC
MTE1S0505MC
MTE1S0506MC
MTE1S0509MC
MTE1S0512MC
MTE1S0515MC
MTE1S1205MC
MTE1S1209MC
MTE1S1212MC
MTE1S1215MC
MTE1S1505MC
Start-up time
µs
MTE1S1509MC
MTE1S1512MC
MTE1S1515MC
MTE1S2405MC
MTE1S2409MC
MTE1S2412MC
MTE1S2415MC
Start-up time
µs
Output Ripple Reduction
By using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mV p-p max.
Component selection
Capacitor: It is required that the ESR (Equivalent Series Resistance) should be as low as possible, ceramic types are recommended.
The voltage rating should be at least twice (except for 15V output), the rated output voltage of the DC/DC converter.
Inductor: The rated current of the inductor should not be less than that of the output of the DC/DC converter. At the rated current, the DC resistance of the
inductor should be such that the voltage drop across the inductor is <2% of the rated voltage of the DC/DC converter. The SRF (Self Resonant Frequency)
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