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NMF1212SC

P1-P3P4-P5
NMF Series
Isolated 1W Regulated Single Output DC/DC Converters
KDC_NMF.F02 Page 1 of 5
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For full details go to
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SELECTION GUIDE
Order Code
Nominal
Input
Voltage
Output
Voltage
Output
Current
Power Out
Efficiency
Isolation
Capacitance
MTTF
1
Package
Style
V V mA mW % pF kHrs
NMF0505DC 5 5 100 500 50 37 1307
DIP
NMF0512DC 5 12 83 1000 62 46 512
DIP
NMF0515DC 5 15 67 1000 62 52 316
DIP
NMF0505SC 5 5 100 500 50 37 1307
SIP
NMF0512SC 5 12 83 1000 62 46 512
SIP
NMF0515SC 5 15 67 1000 62 52 316
SIP
NMF1205DC 12 5 100 500 50 62 456 DIP
NMF1212DC 12 12 83 1000 62 98 290 DIP
NMF1215DC 12 15 67 1000 62 108 218 DIP
NMF1205SC 12 5 100 500 50 62 456 SIP
NMF1212SC 12 12 83 1000 62 98 290 SIP
NMF1215SC 12 15 67 1000 62 108 218 SIP
NMF2405DC 24 5 100 500 50 69 843 DIP
NMF2409DC 24 9 100 900 62 106 613 DIP
NMF2412DC 24 12 83 1000 62 129 422 DIP
NMF2415DC 24 15 67 1000 62 151 279 DIP
NMF2405SC 24 5 100 500 50 69 843 SIP
NMF2409SC 24 9 100 900 62 106 613 SIP
NMF2412SC 24 12 83 1000 62 129 422 SIP
NMF2415SC 24 15 67 1000 62 151 279 SIP
Obsolete
Recommended
Alternative
NMF0509DC 5 9 100 900 62 42 825 DIP
Contact Murata
NMF0509SC 5 9 100 900 62 42 825
SIP
Contact Murata
NMF1209DC 12 9 100 900 62 82 379 DIP Contact Murata
NMF1209SC 12 9 100 900 62 82 379 SIP Contact Murata
NMF4805DC 48 5 100 500 50 51 200 DIP
Contact Murata
NMF4809DC 48 9 100 900 62 86 283 DIP Contact Murata
NMF4812DC 48 12 83 1000 62 108 162 DIP Contact Murata
NMF4815DC 48 15 67 1000 62 127 135 DIP Contact Murata
NMF4805SC 48 5 100 500 50 51 200 SIP Contact Murata
NMF4809SC 48 9 100 900 62 86 283 SIP Contact Murata
NMF4812SC 48 12 83 1000 62 108 162 SIP Contact Murata
NMF4815SC 48 15 67 1000 62 127 135 SIP Contact Murata
When operated with additional external load capacitance the rise time of the input voltage will determine the maximum external
capacitance value for guaranteed start up. The slower the rise time of the input voltage the greater the maximum value of the
additional external capacitance for reliable start up.
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection
2
1 second
Lead temperature 1.5mm from case for 10 seconds 300°C
Internal power dissipation 450mW
Input voltage V
IN, NMF05 types 7V
Input voltage V
IN, NMF12 types 15V
Input voltage V
IN, NMF24 types 28V
Input voltage V
IN, NMF48 types 54V
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
2. Supply voltage must be discontinued at the end of the short circuit duration.
All specifications typical at T
A=25°C, nominal input voltage and rated output current unless otherwise specified.
FEATURES
RoHS compliant
Output regulation <1.5%
Output programmable
Power density 0.85W/cm
3
Single isolated output
SIP & DIP package styles
UL 94V-0 package material
No heatsink required
Footprint from 1.17cm
2
1kVDC isolation
5V, 12V, 24V & 48V input
5V, 9V, 12V & 15V output
SMD construction
Fully encapsulated with toroidal magnetics
No external components required
MTTF up to 2.4 million hours
PCB mounting
DESCRIPTION
The NMF series of DC/DC converters is used
where a tightly regulated supply is required. They
are ideal for situations where the intput voltage is
not tightly controlled. The output trim pin makes
the device particularly suitable for applications
requiring a programmable output voltage. The 5V
output version can be used to give a regulated
output, adjustable between 1.2V and 5.0V with a
single resistor. An option not to have this function
is available, on SIP package type parts, prefix C
with N. The single rail regulated output makes the
ideal choice to power sensors, such as pressure
transducers, hall effect sensors and mass airflow
sensors.
NMF Series
Isolated 1W Regulated Single Output DC/DC Converters
KDC_NMF.F02 Page 2 of 5
www.murata-ps.com/support
OUTPUT VOLTAGE ADJUSTMENT (for 5V output variants)
The trimming (adjust) input on the device allows output voltage adjustment from 1.2V to 3.3VDC by using a resistor as shown here. The table below provides RTRIM values for the
most commonly required output voltages. For applications not requiring the TRIM function, this pin must be left unconnected for normal regulated output.
VOUT SET (V) RTRIM (Ω)
1.2
0
1.5 64
2.0 224
2.1 263
2.2 304
2.5 448
3.3 1071
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Voltage range
Continuous operation, 5V input types 4.75 5 5.25
V
Continuous operation, 12V input types 11.4 12 12.6
Continuous operation, 24V input types 22.8 24 25.2
Continuous operation, 48V input types 45.6 48 50.4
OUTPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Voltage set point accuracy 100% load 5%
Rated power
1
TA= 0°C to 70°C
1W
Line regulation High V
IN to low VIN 0.25 %/%
Load regulation 10% load to rated load 0.9 1.5 %
Ripple & noise BW=DC to 20MHz, all output types 60 mV p-p
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation test voltage Flash tested for 1 second 1000 VDC
Resistance Viso= 500VDC 0.1 GΩ
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Switching frequency All input types 90 kHz
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Specification All output types 0 70
°C
Case temperature above ambient 38
Storage
-55 150
Cooling Free air convection
TEMPERATURE DERATING GRAPH
150
10050
0
0
50%
100%
Safe Operating Area
Ambient Temperature (ºC)
Output Power (W)
70°C
125ºC
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering
systems with a peak wave solder temperature of
300ºC for 10 seconds. The pin termination finish
on the SIP package type is Tin Plate, Hot Dipped
over Matte Tin over 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
+VIN VOUT
-VOUT
TRIM
R
TRIM
NMF
-VIN
NMF Series
Isolated 1W Regulated Single Output DC/DC Converters
KDC_NMF.F02 Page 3 of 5
www.murata-ps.com/support
TYPICAL APPLICATIONS
Pressure sensor, or strain gauge equivalent circuit
Scmitt Trigger
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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 NMF 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 NMF 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 NMF 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.
P1-P3P4-P5

NMF1212SC

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Isolated DC/DC Converters 1W SINGLE REG 12/12V Single Output
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