NME1205SV [MURATA]
Analog Circuit;
muRata 
NME 5V & 12V Series
Isolated 1W Single Output DC/DC Converters
SELECTION GUIDE
Nominal
Input
Output
Voltage
Output
Current
Isolation
Capacitance
Input
Current at Efficiency
Rated Load
MTTF1
Package
Style
Order Code
Voltage
V
5
V
5
mA
200
111
83
mA
289
260
256
250
248
289
260
256
250
248
120
115
105
110
120
115
110
111
%
69
77
78
80
80
69
77
78
80
80
69
74
76
75
69
74
76
75
pF
30
37
33
40
48
30
37
33
40
48
33
48
55
52
33
48
55
52
kHrs
3415
3078
2205
1532
NME0505DC
NME0509DC
NME0512DC
NME0515DC
NME0524DC
NME0505SC
NME0509SC
NME0512SC
NME0515SC
NME0524SC
NME1205DC
NME1209DC
NME1212DC
NME1215DC
NME1205SC
NME1209SC
NME1212SC
NME1215SC
5
9
5
12
15
24
5
DIP
SIP
5
66
5
42
FEATURES
5
200
111
83
3415
3078
2205
1532
5
9
ꢀRoHS compliant
ꢀSingle isolated output
ꢀ1kVDC isolation
ꢀEfficiency up to 80%
5
12
15
24
5
5
66
5
42
12
12
12
12
12
12
12
12
200
111
83
2493
2311
1780
1313
2493
2311
1780
1313
9
DIP
SIP
12
15
5
ꢀWide temperature performance at full
1 watt load, –40°C to 85°C
ꢀPower density 1.53W/cm3
ꢀUL 94V-0 package material
ꢀFootprint from 0.69cm2
66
200
111
83
9
12
15
66
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.
ꢀIndustry standard pinout
ꢀ5V & 12V input
INPUT CHARACTERISTICS
ꢀ5V, 9V, 12V and 15V output
ꢀNo heatsink required
Parameter
Conditions
Min.
4.5
Typ.
5.0
Max.
5.5
Units
V
Continuous operation, 5V input types
Continuous operation, 12V input types
Voltage range
10.8
12.0
26
13.2
48
ꢀInternal SMD construction
ꢀFully encapsulated with toroidal magnetics
ꢀNo external components required
ꢀMTTF up to 3.4 million hours
ꢀCustom solutions available
ꢀPin compatible with LME & NML series
ꢀPCB mounting
Reflected ripple current
mA p-p
OUTPUT CHARACTERISTICS
Parameter
Rated Power2
Conditions
TA=-40°C to 120°C
Min.
Typ.
Max.
1.0
Units
W
Voltage Set Point Accuracy See tolerance envelope
Line regulation
High VIN to low VIN
1.0
14
1.2
15
%/%
%
10% load to rated load, 5V output types
10% load to rated load, 9V output types
10% load to rated load, 12V output types
10% load to rated load, 15V output types
10% load to rated load, 24V output types
BW=DC to 20MHz, 5V output types
BW=DC to 20MHz, 9V output types
BW=DC to 20MHz, 12V output types
BW=DC to 20MHz, 15V output types
BW=DC to 20MHz, 24V output types
9
10
Load Regulation2
7.5
7.0
5.5
85
9.5
8.5
7.5
110
75
DESCRIPTION
The NME series of DC/DC Converters is particular-
ly suited to isolating and/or converting DC power
rails. The galvanic isolation allows the device to be
configured to provide an isolated negative rail in
systems where only positive rails exist. The wide
temperature range guarantees startup from –40°C
and full 1 watt output at 85°C. For lower ripple,
refer to output ripple reduction section.
60
Ripple and Noise
50
65
mV p-p
40
55
140
180
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection3
1 second
300°C
450mW
7V
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
Input voltage VIN, NME05 types
Input voltage VIN, NME12 types
15V
1. Calculated using MIL-HDBK-217F FN2 with nominal input voltage at full load.
2. See derating curve.
3. Supply voltage must be disconnected at the end of the short circuit duration.
For full details go to
www.murata-ps.com/rohs
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_NMEC.E04 Page 1 of 5
NME 5V & 12V Series
Isolated 1W Single Output DC/DC Converters
ISOLATION CHARACTERISTICS
Parameter
Isolation test voltage
Resistance
Conditions
Flash tested for 1 second
Viso= 1000VDC
Min.
1000
Typ.
10
Max.
Units
VDC
GΩ
GENERAL CHARACTERISTICS
Parameter
Conditions
5V input types
12V input types
Min.
Typ.
110
145
Max.
Units
kHz
Switching frequency
TEMPERATURE CHARACTERISTICS
Parameter
Specification
Storage
Conditions
All output types
Min.
-40
Typ.
Max.
85
Units
°C
-50
130
41
5V output types
Case Temperature above ambient
Cooling
All other output types
Free air convection
32
TEMPERATURE DERATING GRAPH
TOLERANCE ENVELOPE
1.5
+10%
+5%
VNOM
+2.5%
-2.5%
-7.5%
85°C
1.0
0.5 Safe Operating Area
120°C
150
0
100
75
10 25
50
-40
100
Ambient Temperature (°C)
0
50
Output Load Current (%)
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 NME 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 NME 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 NME 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.
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_NMEC.E04 Page 2 of 5
NME 5V & 12V Series
Isolated 1W Single Output DC/DC Converters
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: Ceramic chip capacitors are recommended. It is required that the ESR (Equivalent Series Resistance) should be as low as possible, X7R 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.
L
DC
Power
Source
Load
C
DC
Inductor Order Codes
Order Code
L (μH)
SMD
Through Hole
22R473C
22R473C
22R683C
22R104C
22R334C
22R104C
22R473C
22R683C
22R104C
C (μF)
4.70
1.00
1.00
0.47
1.00
4.70
1.00
0.47
0.47
NME0505XC
NME0509XC
NME0512XC
NME0515XC
NME0524XC
NME1205XC
NME1209XC
NME1212XC
NME1215XC
47
47
82473C
82473C
82683C
82104C
82334C
82104C
82473C
82683C
82104C
68
100
330
100
47
68
100
Product specification for MPS inductors can be found at:
2200R Series (Through Hole)
8200 Series (SMD)
http://www.murata-ps.com/data/magnetics/kmp_2200r.pdf
http://www.murata-ps.com/data/magnetics/kmp_8200c.pdf
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_NMEC.E04 Page 3 of 5
NME 5V & 12V Series
Isolated 1W Single Output DC/DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
DIP Package
PIN CONNECTIONS - 8 PIN DIP
SIP Package
Pin
1
Function
-VIN
0.45
(11.48)
4
+VIN
5
+VOUT
-VOUT
0.386 (9.80)
NME0505DC
0.236
(6.00)
7
XYYWW
PIN CONNECTIONS - 4 PIN SIP
0.453 (11.50)
Pin
1
Function
-VIN
0.267 (6.80)
2
+VIN
0.393
(10.0)
NME0505SC
0.022 (0.55)
0.018 (0.45)
3
-VOUT
XYYWW
4
+VOUT
0.181 (4.60)
0.142 (3.60)
1
2
3
4
0.022 (0.55)
0.018 (0.45)
0.181 (4.60)
0.142 (3.60)
0.022 (0.55)
0.018 (0.45)
0.074 (1.89)
0.109 (2.77)
1
4
0.0118 (0.30)
0.043 (1.09)
0.0078 (0.20)
0.3 (7.62)
0.049
(1.25)
7
5
0.0118 (0.30)
0.0078 (0.20)
0.2 (5.08)
0.3 (7.62)
0.3
(7.62)
0.0763 (1.94)
All dimensions in inches 0.01 (mm 0.25mm). All pins on a 0.1 (2.54) pitch and within 0.01 (0.25) of true position.
Weight: 1.30g (SIP) 1.48g (DIP)
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_NMEC.E04 Page 4 of 5
NME 5V & 12V Series
Isolated 1W Single Output DC/DC Converters
PACKAGE SPECIFICATIONS (continued)
RECOMMENDED FOOTPRINT DETAILS
8 Pin DIP Package
4 Pin SIP Package
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TUBE OUTLINE DIMENSIONS
4 Pin SIP Tube
8 Pin DIP Tube
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Unless otherwise stated all dimensions in inches (mm) 0.5mm.
Tube length (8 Pin DIP) : 20.47 (520mm 2mm).
Tube Quantity : 35
Tube length (4 Pin SIP) : 20.47 (520mm 2mm).
RoHS COMPLIANCE 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
USA:
Mansfield (MA), Tel: (508) 339 3000, email: sales@murata-ps.com
Canada: Toronto, Tel: (866) 740 1232, email: toronto@murata-ps.com
UK:
Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com
Murata Power Solutions, Inc.
France:
Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
Germany: München, Tel: +49 (0)89-544334-0, email: ped.munich@murata-ps.com
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
www.murata-ps.com email: sales@murata-ps.com ISO 9001 & ISO 14001 REGISTERED
Japan:
Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com
Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com
China:
Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com
Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
Singapore: Parkway Centre, Tel: +65 6348 9096, email: singapore@murata-ps.com
notice.
© 2008 Murata Power Solutions, Inc.
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_NMEC.E04 Page 5 of 5
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