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NMD Series
Isolated 1W Twin Output DC/DC Converters
SELECTION GUIDE
Order Code
NMD050503DC NMD050505DC NMD050509DC NMD050512DC NMD050515DC NMD050503SC NMD050505SC NMD050509SC NMD050512SC NMD050515SC NMD120505DC NMD120509DC NMD120512DC NMD120515DC NMD120505SC NMD120509SC NMD120512SC NMD120515SC
Nominal Input Voltage V
5 5 5 5 5 5 5 5 5 5 12 12 12 12 12 12 12 12
Output Output Output Output Efficiency Voltage 1 Voltage 2 Current 1 Current 2 V
5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
MTTF1 kHrs
1615 1615 669 339 187 1615 1615 669 339 187 489 343 229 148 489 343 229 148
Package Style
V
3.3 5 9 12 15 3.3 5 9 12 15 5 9 12 15 5 9 12 15
mA
100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100
mA
152 100 56 42 34 152 100 56 42 34 100 56 42 34 100 56 42 34
%
70 70 80 80 80 70 70 80 80 80 70 80 80 80 70 80 80 80
DIP
FEATURES
RoHS compliant Twin independent outputs Input/output isolation 1kVDC Output/output isolation 1kVDC Power sharing on outputs Efficiency to 80% Power density 0.85W/cm3 UL 94V-0 package material Footprint from 1.17cm2 5V & 12V input One 5V output (V1) 3.3V, 5V, 9V, 12V and 15V output (V2) No heatsink required Internal SMD construction Fully encapsulated with toroidal magnetics No external components required MTTF up to 1.6 million hours Custom solutions available PCB mounting
SIP
DIP
SIP
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.
INPUT CHARACTERISTICS
Parameter
Voltage range
Conditions
Continuous operation, 5V input types Continuous operation, 12V input types
Min.
4.5 10.8
Typ.
5.0 12
Max.
5.5 13.2
Units
V
OUTPUT CHARACTERISTICS
Parameter
Rated power2 Voltage set point accuracy Line regulation
Conditions
TA=0C to 125C See tolerance envelope High VIN to low VIN 10% load to rated load, 3.3V output types 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 BW=DC to 20MHz, all output types
Min.
Typ.
Max.
1.0
Units
W %/%
1.0
Load regulation
DESCRIPTION
The NMD series of DC/DC converters are ideally suited to applications where a potential difference exists between loads, e.g. motor control circuits. The twin outputs offer cost and space savings by consolidating two DC/DC converters into one package. All of the rated power may be drawn from a single output provided the total load does not exceed 1 watt.
Ripple and noise
1.2 15 15 10 10 10 75
%
mV p-p
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection3 Lead temperature 1.5mm from case for 10 seconds Input voltage VIN, NMD05 types Input voltage VIN, NMD12 types 1 second 300C 7V 15V
1. Calculated using MIL-HDBK-217F 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. All specifications typical at TA=25C, nominal input voltage and rated output current unless otherwise specified.
For full details go to www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_NMDC.D02 Page 1 of 4
NMD Series
Isolated 1W Twin Output DC/DC Converters
ISOLATION CHARACTERISTICS
Parameter
Isolation test voltage Resistance
Conditions
Flash tested for 1 second Viso= 500VDC
Min.
1000 1
Typ.
Max.
Units
VDC G
GENERAL CHARACTERISTICS
Parameter
Switching frequency
Conditions
All input types
Min.
Typ.
100
Max.
Units
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Specification Storage Cooling
Conditions
All output types Free air convection
Min.
0 -55
Typ.
Max.
70 150
Units
C
TEMPERATURE DERATING GRAPH 1.5
TOLERANCE ENVELOPE +10% 70C +5% VNOM
Output Power (W)
Typical L
1.0
oad Line
+2.5% -2.5% -7.5%
0.5 Safe Operating Area 125C 0 0 50 100 Ambient Temperature (C) 150
Output Voltage
10
75 50 25 Output Load Current (%)
100
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 NMD 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 NMD 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 NMD 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.
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300C 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
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_NMDC.D02 Page 2 of 4
NMD Series
Isolated 1W Twin Output DC/DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
DIP Package
0.77 (19.50) 0.77 (19.50) 0.385 (9.80)
PIN CONNECTIONS - 14 PIN DIP
SIP Package
Pin
1 7 8 9 10 11 14
0.022 (0.55) 0.0178 (0.45)
Function
-VIN NC -VOUT2 +VOUT2 -VOUT1 +VOUT1 +VIN
NMD050505DC
XYYWW
0.236 (6.00)
0.268 (6.80)
0.394 (10.00)
NMD050515SC
XYYWW
.181 (4.60) .142 (3.60) 0.022 (0.55) 0.0178 (0.45)
1 0.1 (2.54) 0.043 (1.09) 1 7 11 10 9 8 0.6 (15.24) 0.0118 (0.30) 0.0079 (0.20) 0.05 (1.25) 0.181 (4.60) 0.141 (3.60) 0.079 (2.00)
2
4567 0.1 (2.54)
PIN CONNECTIONS - 7 PIN SIP Pin
0.22 (0.55) 0.0178 (0.45) 0.0118 (0.30) 0.0079 (0.20)
Function
+VIN -VIN +VOUT1 -VOUT1 +VOUT2 -VOUT2
0.3 (7.62) 14 0.084 (2.13)
0.5 (12.70)
Weight: 2.3g (DIP & SIP)
1 2 4 5 6 7
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.
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_NMDC.D02 Page 3 of 4
NMD Series
Isolated 1W Twin Output DC/DC Converters
PACKAGE SPECIFICATIONS (continued)
RECOMMENDED FOOTPRINT DETAILS
14 Pin DIP Package
7 Pin SIP Package
TUBE OUTLINE DIMENSIONS 14 Pin DIP Tube 7 Pin SIP Tube
Unless otherwise stated all dimensions in inches (mm) 0.5mm. Tube length (14 Pin DIP) : 20.47 (520mm 2mm). Tube length (7 Pin SIP) : 20.47 (520mm 2mm).
Tube Quantity : 25
USA: UK: France: Japan:
Tucson (Az), Tel: (800) 547 2537, email: sales@murata-ps.com Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com Website: www.murata-ps.jp Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com
Canada: Toronto, Tel: (866) 740 1232, email: toronto@murata-ps.com
Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
www.murata-ps.com email: sales@murata-ps.com ISO 9001 REGISTERED
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 notice. (c) 2008 Murata Power Solutions, Inc.
Germany: Munchen, Tel: +49 (0)89-544334-0, email: munich@murata-ps.com
China:
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_NMDC.D02 Page 4 of 4

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