NTE Series
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Isolated 1W Single Output SM DC/DC Converters
SELECTION GUIDE
Nominal Input
Output Output Isolation
2
Input Current at Efciency MTTF
1
Order Code Voltage Current Capacitance
Voltage Rated Load
V V mA mA % pF kHrs
NTE0303MC 3.3 3.3 303 410 73 30 5348
NTE0305MC 3.3 5 200 390 78 35 3847
NTE0309MC 3.3 9 111 400 77 31 3134
NTE0312MC 3.3 12 83 400 77 28 3473
FEATURES
NTE0315MC 3.3 15 66 400 77 29 2473
RoHS compliant
NTE0503MC 5 3.3 303 270 74 40 5515
NTE0505MC 5 5 200 294 68 35 6857
Lead frame technology
NTE0505MEC 5 5 200 260 77 40 3933
Single isolated output
NTE0506MC 5 6 167 278 72 39 6677
NTE0509MC 5 9 111 267 75 43 5501
1kVDC Isolation
NTE0512MC 5 12 83 260 77 42 3957
Efciency up to 78%
NTE0515MC 5 15 66 256 78 44 2747
3
NTE1205MC 12 5 200 124 67 47 4683
Power density 1.8W/cm
NTE1209MC 12 9 111 114 73 77 4008
Wide temperature performance at full
NTE1212MC 12 12 83 113 74 88 3121
1 Watt load, 40C to 85C
NTE1215MC 12 15 66 111 75 95 2316
UL 94V-0 Package material
INPUT CHARACTERISTICS
2
Footprint over pins 1.37cm
Parameter Conditions Min. Typ. Max. Units
3.3V, 5V & 12V Input
Continuous operation, 3.3V input types 2.97 3.3 3.63
Voltage range Continuous operation, 5V input types 4.5 5.0 5.5 V
3.3V, 5V, 9V, 12V & 15V output
Continuous operation, 12V input types 10.8 12.0 13.2
No heatsink required
Reected ripple current 30 47 mA p-p
Internal SMD construction
ISOLATION CHARACTERISTICS
Toroidal magnetics
Parameter Conditions Min. Typ. Max. Units
MTTF up to 6.8 million hours
Isolation voltage Flash tested for 1 second 1000 VDC
Resistance Viso= 1000VDC 10 G
Custom solutions available
Multi-layer ceramic capacitors
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Switching frequency All output types 110 kHz
PRODUCT OVERVIEW
The NTE series of miniature surface mounted
ABSOLUTE MAXIMUM RATINGS
DC/DC Converters employ leadframe technol-
Internal power dissipation 600mW
ogy and transfer moulding techniques to bring
Input voltage VIN, NTE03 types 5.5V
all of the benets of IC style packaging to hybrid
circuitry. The co-planarity of the pin positions is Input voltage VIN, NTE05 types 7V
based upon IEC 191-6:1990. The devices are Input voltage VIN, NTE12 types 15V
suitable for all applications where high volume
1. If components are required in tape and reel format sufx order code with -R, e.g. NTE0505MC-R.
production is envisaged.
2. Calculated using MIL-HDBK-217 FN2 calculation model with nominal input voltage at full load.
All specications typical at TA=25C, nominal input voltage and rated output current unless otherwise specied.
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KDC_NTE.K05 Page 1 of 6NTE Series
Isolated 1W Single Output SM DC/DC Converters
OUTPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Rated power TA=-40C to 85C 1.0 W
Voltage set point accuracy See tolerance envelope
Line regulation High VIN to low VIN 1.0 1.2 %/%
10% load to rated load, 03XXMC, 0503MC, 0505MEC 10 14
10% load to rated load, 0505MC & 1205MC 12.8 15
10% load to rated load, 0506MC 9.2 10
1
Load regulation %
10% load to rated load, 0509MC & 1209MC 8.3 9.0
10% load to rated load, 0512MC & 1212MC 6.8 7.5
10% load to rated load, 0515MC & 1215MC 6.3 7.0
BW=DC to 20MHz, 03XXMC, 0503MC, 0505MEC 40 60
BW=DC to 20MHz, 0505MC & 1205MC 62 85
BW=DC to 20MHz, 0506MC 103 170
Ripple and noise mV p-p
BW=DC to 20MHz, 0509MC & 1209MC 49 75
BW=DC to 20MHz, 0512MC & 1212MC 39 65
BW=DC to 20MHz, 0515MC & 1215MC 38 76
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Specication All output types -40 85
Storage -55 125
0305MC, 0309MC, 0315MC 25
C
0303MC, 0312MC, 0503MC, 0505MEC, 0509MC, 0512MC, 0515MC 30
Case temperature rise above
ambient 0505MC, 1205MC 43
1209MC, 1212MC, 1215MC 40
Cooling Free air convection
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 specied time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.
Murata Power Solutions NTE 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 specic agency approvals, such as the NTE 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 NTE 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 specied 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.
TEMPERATURE DERATING GRAPH
1.5
85C
1.0
0.5 Safe Operating Area
0
-40 100 150
0 50
Ambient Temperature (C)
1. 12V input types have typically 3% less load regulation change.
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KDC_NTE.K05 Page 2 of 6
Output Power (W)