Datasheet
MTE1 Series
Isolated 1W Single Output SM DC/DC Converters
KDC_MTE1.B04 Page 5 of 11
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APPLICATION NOTES
Advisory Notes Minimum Load
The MTE series is not hermetically sealed, customers should ensure that parts are
fully dried before input power application.
The MTE has been tested to the following standards, which should not be ex-
ceeded for shock and vibration:
BS EN 60068-2-64:2008 (Vibration Broadband Random)
BS EN 60068-2-27:2009 (Mechanical Shock)
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 & 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.
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) should
be >20MHz.
DC
DC
L
C
Load
Power
Source
Inductor Capacitor
L, μH SMD Through Hole C, μF
MTE1S0303MC
4.7 82472C 11R472C 10
MTE1S0305MC 10 82103C 11R103C 4.7
MTE1S0309MC 22 82223C 11R223C 2.2
MTE1S0312MC 47 82473C 11R473C 1
MTE1S0315MC 47 82473C 11R473C 1
MTE1S0503MC 4.7 82472C 11R472C 10
MTE1S0505MC 10 82103C 11R103C 4.7
MTE1S0506MC 22 82223C 11R223C 2.2
MTE1S0509MC 22 82223C 11R223C 2.2
MTE1S0512MC 47 82473C 11R473C 1
MTE1S0515MC 47 82473C 11R473C 1
MTE1S1205MC 10 82103C 11R103C 4.7
MTE1S1209MC 22 82223C 11R223C 2.2
MTE1S1212MC 47 82473C 11R473C 1
MTE1S1215MC 47 82473C 11R473C 1
MTE1S1505MC 10 82103C 11R223C 4.7
MTE1S1509MC 22 82223C 11R103C 2.2
MTE1S1512MC 47 82473C 11R473C 1
MTE1S1515MC 47 82473C 11R473C 1
MTE1S2405MC 10 82103C 11R103C 4.7
MTE1S2409MC 22 82223C 11R223C 2.2
MTE1S2412MC 47 82473C 11R473C 1
MTE1S2415MC
47 82473C 11R473C 1
Start-up time Start-up time
μs μs
MTE1S0303MC
140 MTE1S0509MC 355
MTE1S0305MC 270 MTE1S0512MC 670
MTE1S0309MC 830 MTE1S0515MC 1410
MTE1S0312MC 1250 MTE1S1205MC 175
MTE1S0315MC 2330 MTE1S1209MC 390
MTE1S0503MC 130 MTE1S1212MC 800
MTE1S0505MC 170 MTE1S1215MC 1360
MTE1S0506MC 210 MTE1S1505MC 130
Start-up time
μs
MTE1S1509MC 310
MTE1S1512MC 440
MTE1S1515MC 770
MTE1S2405MC 110
MTE1S2409MC 230
MTE1S2412MC 400
MTE1S2415MC
590
Typical Start-Up Wave Form