SELECTION GUIDE
FEATURES
s
Twin Independent Outputs
s
Output/Output Isolation 1kVDC
s
Power Sharing on Outputs
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Input/Output Isolation 1kVDC
s
SIP & DIP Package Styles
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Efficiency to 80%
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Power Density 0.85W/cm
3
s
5V & 12V Input
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One 5V Output (V1)
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3.3V, 5V, 9V, 12V
and 15V Output (V2)
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Footprint from 1.17cm
2
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UL 94V-0 Package Material
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No Heatsink Required
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Internal SMD Construction
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Toroidal Magnetics
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Fully Encapsulated
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No External Components Required
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MTTF up to 1.9 Million hours
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PCB Mounting
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Custom Solutions Available
DESCRIPTION
The NMD series of DC-DC converters are
ideally suited to applications where a
potential difference exists between loads, eg
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.
Nominal
Input
Output
Output
Output
Output
Voltage Voltage 1 Voltage 2 Current 1 Current 2 Efficiency MTTF
1
Order Code
(V)
(V)
(V)
(mA)
(mA)
(%)
kHrs
NMD050503D
5
5
3.3
100
152
70
1615 DIP
NMD050503S
5
5
3.3
100
152
70
1615
SIP
NMD050505D
5
5
5
100
100
70
1615
DIP
NMD050505S
5
5
5
100
100
70
1615
SIP
NMD050509D
5
5
9
100
56
80
669
DIP
NMD050509S
5
5
9
100
56
80
669
SIP
NMD050512D
5
5
12
100
42
80
339
DIP
NMD050512S
5
5
12
100
42
80
339
SIP
NMD050515D
5
5
15
100
34
80
187
DIP
NMD050515S
5
5
15
100
34
80
187
SIP
NMD120505D
12
5
5
100
100
70
489
DIP
NMD120505S
12
5
5
100
100
70
489
SIP
NMD120509D
12
5
9
100
56
80
343
DIP
NMD120509S
12
5
9
100
56
80
343
SIP
NMD120512D
12
5
12
100
42
80
229
DIP
NMD120512S
12
5
12
100
42
80
229
SIP
NMD120515D
12
5
15
100
34
80
148
DIP
NMD120515S
12
5
15
100
34
80
148
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.
Parameter
Conditions
MIN
TYP
MAX
Units
Continuous operation, 5V input types
4.5
5
5.5
Voltage Range
Continuous operation, 12V input types
10.8
12
13.2
V
Parameter
Conditions
MIN
TYP
MAX
Units
Rated Power
2
T
A
= 0C to 125C
1
W
Voltage Set
Point Accuracy
See tolerance envelope
Line Regulation High V
IN
to low V
IN
1.0
1.2
%/%
10% load to rated load, 3.3V output types
15
10% load to rated load, 5V output types
15
Load Regulation 10% load to rated load, 9V output types
10
%
10% load to rated load, 12V output types
10
10% load to rated load, 15V output types
10
Ripple & Noise BW=DC to 20MHz, All output types
75
mV p-p
Short-circuit duration
3
1 second
Lead temperature 1.5mm from case for 10 seconds
300C
Input voltage V
IN
, NMD05 types
7V
Input voltage V
IN
, NMD12 types
15V
INPUT CHARACTERISTICS
OUTPUT CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
1 Calculated using MIL-HDBK-217F with nominal input voltage at full load.
2 See derating curve
3 Supply voltage must be discontinued at the end of the short circuit duration.
All specifications typical at T
A
=25C, nominal input voltage and rated output current unless otherwise specified.
NMD SERIES
Isolated 1W Twin Output DC-DC Converters
www.dc-dc.com
NMD SERIES
Isolated 1W Twin Output DC-DC Converters
C&D Technologies (NCL) Ltd
Tanners Drive, Blakelands North
Milton Keynes MK14 5BU, England
Tel: +44 (0)1908 615232
Fax:+44 (0)1908 617545
email: info@cdtechno-ncl.com
www: http://www.dc-dc.com
C&D Technologies (NCL), Inc.
5816 Creedmoor Road, Raleigh
NC 27612, USA
Tel: +1 (919) 571-9405
Fax: +1 (919) 571-9262
email: info@us.cdtechno-ncl.com
C&D Technologies (NCL) Limited reserve the right to alter or improve the
specification, internal design or manufacturing process at any time, without
notice. Please check with your supplier or visit our web site to ensure that
you have the current and complete specification for your product before use.
C&D Technologies (NCL) Limited 2001
NDC NMD.3
No part of this publication may be copied, transmitted or stored in a
retrieval system or reproduced in any way including, but not limited to,
photography, photocopy, magnetic or other recording means, without prior
written permission from C&D Technologies (NCL) Limited.
Instructions for use are available from www.dc-dc.com
ISOLATION CHARACTERISTICS
PERFORMANCE CHARACTERISTICS
GENERAL CHARACTERISTICS
TEMPERATURE CHARACTERISTICS
PIN CONNECTIONS
Parameter
Conditions
MIN
TYP
MAX
Units
Isolation Test Voltage
Flash tested for 1 second
1000
VDC
Resistance
Viso=500VDC
1
G
Parameter
Conditions
MIN
TYP
MAX
Units
Switching Frequency
All input types
100
kHz
Parameter
Conditions
MIN
TYP
MAX
Units
Specification
All output types
0
70
C
Storage
55
150
C
Cooling
Free air convection
14 Pin DIP
PIN
1
GND
7
NC
8
0V
9
+V2
10
0V
11
+V1
14
V
IN
7 Pin SIP
PIN
1
V
IN
2
GND
4
+V1
5
0V
6
+V2
7
0V
tolerance envelope
+
10%
+5%
V nominal
+2.5%
-2.5%
-7.5%
10
50
100
Output Load Current (%)
19.80
9.80
MECHANICAL DIMENSIONS
6.80
15.24
7.62
4.1
0.500.05
0.500.05
0.500.05
7.62
19.50
6.00
10.0
2.00
1.25
15.24
4.1
All dimensions in mm XX.XX 0.25mm. All pins on a
2.54mm pitch and within 0.25mm of true position.
14 Pin DIP
Weight: 2.3g
7 Pin SIP
Weight: 2.3g
NMD050509D
YYWW
NMD120515S
YYWW
1 2
5
6 7
4
0.250.05
0.250.05
8
9
11 10
14
7
1
temperature derating graph
2.0
1.5
1.0
0.5
0
40
0
50
70
100 125 150
Ambient Temperature (C)
Safe Operating Area
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