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NMA1209SC

P1-P3P4-P6
NMA 5V, 12V & 15V Series
Isolated 1W Dual Output DC/DC Converters
KDC_NMA.G02 Page 1 of 6
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For full details go to
www.murata-ps.com/rohs
　
SELECTION GUIDE
Order Code
Nominal
Input
Voltage
Output
Voltage
Output
Current
Input
Current at
Rated Load
Efficiency
Isolation
Capacitance
MTTF
1
Package
Style
V V mA mA % pF kHrs
NMA0505DC 5 ±5 ±100 289 69 28 3103
DIP
NMA0509DC 5 ±9 ±55 267 75 32 2257
NMA0512DC 5 ±12 ±42 260 77 34 1579
NMA0515DC 5 ±15 ±33 256 78 36 1065
NMA0505SC 5 ±5 ±100 289 69 28 3103
SIP
NMA0509SC 5 ±9 ±55 267 75 32 2257
NMA0512SC 5 ±12 ±42 260 77 34 1579
NMA0515SC 5 ±15 ±33 256 78 36 1065
NMA1205DC 12 ±5 ±100 120 69 33 2193
DIP
NMA1209DC 12 ±9 ±55 113 74 46 1734
NMA1212DC 12 ±12 ±42 111 75 55 1303
NMA1215DC 12 ±15 ±33 110 76 54 932
NMA1205SC 12 ±5 ±100 120 69 33 2193
SIP
NMA1209SC 12 ±9 ±55 113 74 46 1734
NMA1212SC 12 ±12 ±42 111 75 55 1303
NMA1215SC 12 ±15 ±33 110 76 54 932
NMA1505DC 15 ±5 ±100 91 71 39 1941
DIPNMA1512DC 15 ±12 ±42 87 78 68 790
NMA1515DC 15 ±15 ±33 84 80 84 523
NMA1505SC 15 ±5 ±100 91 71 39 1941
SIPNMA1512SC 15 ±12 ±42 87 78 68 790
NMA1515SC 15 ±15 ±33 84 80 84 523
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Voltage range
Continuous operation, 5V input types 4.5 5 5.5
V
Continuous operation, 12V input types 10.8 12 13.2
Continuous operation, 15V input types 13.5 15 16.5
Reflected ripple current 20 40 mA p-p
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1.5mm from case for 10 seconds 300°C
Internal power dissipation 450mW
Input voltage V
IN, NMA05 types 7V
Input voltage V
IN, NMA12 types 15V
Input voltage V
IN, NMA15 types 18V
1. Calculated using MIL-HDBK-217FN2 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.
DESCRIPTION
The NMA series of industrial temperature range
DC/DC converters are the standard building blocks
for on-board distributed power systems. They are
ideally suited for providing dual rail supplies on
primarily digital boards with the added benefit of
galvanic isolation to reduce switching noise. All of
the rated power may be drawn from a single pin
provided the total load does not exceed 1 watt.
FEATURES
RoHS compliant
Efficiency up to 80%
Power density up to 0.85W/cm
3
Wide temperature performance at full
1 Watt load, –40°C to 85°C
Dual output from a single input rail
UL 94V-0 package material
No heatsink required
Footprint from 1.17cm
2
Industry standard pinout
Power sharing on output
1kVDC isolation
5V, 12V, & 15V input
5V, 9V, 12V and 15V output
Internal SMD construction
Fully encapsulated with toroidal
magnetics
No external components required
MTTF up to 3.1 million hours
No electrolytic or tantalum capacitors
NMA 5V, 12V & 15V Series
Isolated 1W Dual Output DC/DC Converters
KDC_NMA.G02 Page 2 of 6
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TEMPERATURE DERATING GRAPH
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Switching frequency
5V input types 110
kHz
12V input types 140
15V input types 90
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation test voltage Flash tested for 1 second 1000 VDC
Resistance Viso= 1000VDC 10 GΩ
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Specification All output types -40 85
°C
Storage -50 130
Case Temperature above ambient
0505, 1205 33
0509, 0512, 0515, 1209, 1212, 1215 28
1505 26
1512, 1515
17
Cooling Free air convection
150100
50
0
-40
0
0.5
1.0
1.5
Safe Operating Area
85°C
Ambient Temperature (°C)
Output Power (W)
120°C
TOLERANCE ENVELOPE
+10%
Output Load Current (%)
Output Voltage
+5%
-7.5%
-2.5%
+2.5%
Typical Load Line
V
NOM
100
75
50
25
10
OUTPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Rated Power
1
TA=-40°C to 120°C
1W
Voltage Set Point Accuracy See tolerance envelope
Line regulation High V
IN to low VIN 1.0 1.2 %/%
Load Regulation
10% load to rated load
5V & 12V input
5V output types 10 12.5
%
9V output types 9 10
12V output types 6.5 7.5
15V output types 6 7.0
15V input
5V output types 5.5 10
12V output types 2.6 3.0
15V output types 2.3 3.0
Ripple and Noise
2
BW=DC to 20MHz, 5V output types 10 20
mV p-p
BW=DC to 20MHz, 9V output types 7 15
BW=DC to 20MHz, 12V output types 7.5 15
BW=DC to 20MHz, 15V output types 8 15
1. See derating graph.
2. See Ripple & Noise characterisation method.
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.
NMA 5V, 12V & 15V Series
Isolated 1W Dual Output DC/DC Converters
KDC_NMA.G02 Page 3 of 6
www.murata-ps.com/support
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 NMA 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 NMA 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 NMA 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.
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.
Typical Start-Up Wave Form
Start-up time Start-up time
µs
µs
NMA0505xC 2018 NMA1212xC 9765
NMA0509xC 6610 NMA1215xC 15980
NMA0512xC 14520 NMA1505xC 1060
NMA0515xC 20200 NMA1512xC 1627
NMA1205xC 1061 NMA1515xC 6275
NMA1209xC 3935
RoHS COMPLIANT INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of
300°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
P1-P3P4-P6

NMA1209SC

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Isolated DC/DC Converters 1W 12V to 9V Dual Output
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