NTH Series
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Isolated 2W Dual 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
NTH0505MC 5 5 200 500 80 27 2175
NTH0509MC 5 9 111 494 81 34 913
NTH0512MC 5 12 83 488 82 39 465
FEATURES NTH0515MC 5 15 67 476 84 37 257
NTH1205MC 12 5 200 208 80 35 675
RoHS compliant
NTH1209MC 12 9 111 201 83 57 472
Efciency up to 84%
NTH1212MC 12 12 83 198 84 66 315
NTH1215MC 12 15 67 198 84 63 204
Wide temperature performance at full
2 Watt load, 40C to 85C
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
UL 94V-0 Package material
Continuous operation, 5V input types 4.5 5 5.5
Lead frame technology Voltage range V
Continuous operation, 12V input types 10.8 12 13.2
5V & 12V Input
5V input types 40
Reected ripple current mA p-p
12V input types 30
5V, 9V, 12V & 15V Output
OUTPUT CHARACTERISTICS
Internal SMD construction
Parameter Conditions Min. Typ. Max. Units
Dual isolated output
3
Rated power TA=-40C to 85C 2.0 W
NTHXX05, 10% to 100% load -5.0 7.5
1kVDC Isolation Voltage set point
%
accuracy
All other variants, 10% to 100% load -5.0 5.0
MTTF up to 2.17 million hours
Line regulation High VIN to low VIN 1.0 1.2 %/%
3
Power density 1.61W/cm 10% load to rated load, 5V output types 5.0 10
2
Load regulation %
10% load to rated load, all other output types 3.0 10
No heatsink required
BW=DC to 20MHz, 5V output types 150 200
Custom solutions available
BW=DC to 20MHz, 9V output types 100 150
Ripple & noise mV p-p
BW=DC to 20MHz, 12V output types 80 150
Multi layer ceramic capacitors
BW=DC to 20MHz, 15V output types 70 150
DESCRIPTION
ISOLATION CHARACTERISTICS
The NTH series of miniature surface mounted Parameter Conditions Min. Typ. Max. Units
DC/DC converters employ leadframe technol- Isolation test voltage Flash tested for 1 second 1000 VDC
ogy and transfer moulding techniques to bring
Resistance Viso= 500VDC 1 10 G
all of the benets of IC style packaging to hy-
GENERAL CHARACTERISTICS
brid circuitry. The component lead termination
Parameter Conditions Min. Typ. Max. Units
of this product range is lead-free compatible,
All 5V input types 95
therefore the converter can be soldered in a
Switching frequency kHz
All 12V input types 90
lead-free soldering process. Co-planarity of the
lead positions is based upon IEC 191-6:1990.
ABSOLUTE MAXIMUM RATINGS
The devices are suitable for all applications
Internal power dissipation 550mW
where high volume production is envisaged.
Input voltage VIN, NTH05 types 7V
Input voltage VIN, NTH12 types 15V
1. If components are required in tape and reel format sufx order code code with -R, e.g. NTH0505MC-R.
2. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
3. See derating graph.
All specications typical at TA=25C, nominal input voltage and rated output current unless otherwise specied.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
KDC_NTH.C03 Page 1 of 6Typical Load Line
Typical Load Line
NTH Series
Isolated 2W Dual Output SM DC/DC Converters
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Specication All output types -40 85
Storage -55 125
C
Case temperature rise above 5V output types 30
ambient
All other output types 25
Cooling Free air convection
TOLERANCE ENVELOPE
5V output types All other output types
+7.5%
+5%
+3.75%
+2.5%
+2.0%
+1.5%
0%
-1.5%
-1.25%
-2.0%
-5.0% -5.0%
10 25 50 75 100 10 25 50 75 100
Output Load Current (%) Output Load Current (%)
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.
RoHS COMPLIANCE INFORMATION TEMPERATURE DERATING GRAPH
3.0
This series is compatible with RoHS soldering
systems with a peak reow solder temperature
85C
2.0
of 245C and time above liquidus of 217C
for 60 seconds. The pin termination nish on
this product series is Gold, plating thickness
1.0 Safe Operating Area
0.1 microns minimum. The series is backward
compatible with Sn/Pb soldering systems.
0
-40 0 50 100 150
For further information, please visit www.murata-ps.com/rohs
Ambient Temperature (C)
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 NTH 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 NTH 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 NTH 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.
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KDC_NTH.C03 Page 2 of 6
Output Voltage
Output Voltage
Output Power (W)