NMD SERIES
Isolated 1W Twin Output DC-DC Converters
SELECTION GUIDE
Nominal
Input
Output
Output
Output
Output
Voltage Voltage 1 Voltage 2 Current 1 Current 2 Efficiency MTTF
1
Order Code
NMD050503D
NMD050503S
NMD050505D
NMD050505S
NMD050509D
(V)
5
5
5
5
5
5
5
5
5
5
12
12
12
12
12
12
12
12
(V)
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
(V)
3.3
3.3
5
5
9
9
12
12
15
15
5
5
9
9
12
12
15
15
(mA)
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
(mA)
152
152
100
100
56
56
42
42
34
34
100
100
56
56
42
42
34
34
(%)
70
70
70
70
80
80
80
80
80
80
70
70
80
80
80
80
80
80
kHrs
1615
1615
1615
1615
669
669
339
339
187
187
489
489
343
343
229
229
148
148
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
FEATURES
s
Twin Independent Outputs
s
Output/Output Isolation 1kVDC
s
Power Sharing on Outputs
s
Input/Output Isolation 1kVDC
s
SIP & DIP Package Styles
s
Efficiency to 80%
s
Power Density 0.85W/cm
3
s
5V & 12V Input
s
One 5V Output (V1)
s
3.3V, 5V, 9V, 12V
and 15V Output (V2)
s
Footprint from 1.17cm
s
No Heatsink Required
s
Internal SMD Construction
s
Toroidal Magnetics
s
Fully Encapsulated
s
No External Components Required
s
MTTF up to 1.9 Million hours
s
PCB Mounting
s
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.
2
NMD050509S
NMD050512D
NMD050512S
NMD050515D
NMD050515S
NMD120505D
NMD120505S
NMD120509D
NMD120509S
NMD120512D
NMD120512S
NMD120515D
NMD120515S
s
UL 94V-0 Package Material
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
Conditions
MIN
TYP
MAX
Units
Voltage Range
Continuous operation, 5V input types
Continuous operation, 12V input types
4.5
10.8
5
12
5.5
13.2
V
OUTPUT CHARACTERISTICS
Parameter
Conditions
2
MIN
TYP
MAX
Units
High V
IN
to low V
IN
10% load to rated load, 3.3V output types
10% load to rated load, 5V output types
Load Regulation 10% load to rated load, 9V output types
10% load to rated load, 12V output types
10% load to rated load, 15V output types
Ripple & Noise BW=DC to 20MHz, All output types
Rated Power
Voltage Set
Point Accuracy
Line Regulation
T
A
= 0°C to 125°C
See tolerance envelope
1.0
1
W
1.2
15
15
10
10
10
75
%/%
%
mV p-p
ABSOLUTE MAXIMUM RATINGS
Short-circuit duration
3
Lead temperature 1.5mm from case for 10 seconds
Input voltage V
IN
, NMD05 types
Input voltage V
IN
, NMD12 types
1 second
300°C
7V
15V
www.dc-dc.com
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
=25°C, nominal input voltage and rated output current unless otherwise specified.
NMD SERIES
Isolated 1W Twin Output DC-DC Converters
ISOLATION CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX
Units
PIN CONNECTIONS
1000
1
VDC
GΩ
14 Pin DIP
PIN
1 GND
7
NC
8
0V
9
+V2
10
0V
11 +V1
14
V
IN
7 Pin
PIN
1
2
4
5
6
7
SIP
V
IN
GND
+V1
0V
+V2
0V
Isolation Test Voltage
Resistance
Flash tested for 1 second
Viso=500VDC
GENERAL CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX
Units
Switching Frequency
All input types
100
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX
Units
Specification
Storage
Cooling
All output types
Free air convection
0
–55
70
150
°C
°C
PERFORMANCE CHARACTERISTICS
tolerance envelope
+
10%
+5%
V nominal
2.0
+2.5%
-2.5%
-7.5%
1.0
0.5
0
1.5
temperature derating graph
Safe Operating Area
10
50
Output Load Current (%)
100
–40
0
50 70 100 125 150
Ambient Temperature (°C)
MECHANICAL DIMENSIONS
14 Pin DIP
Weight: 2.3g
19.80
15.24
NMD050509D
9.80
6.80
7.62
4.1
7.62
0.50±0.05
1
7
0.25±0.05
YYWW
14
1 10 9
1
8
7 Pin SIP
Weight: 2.3g
19.50
2.00
6.00
10.0
NMD120515S
YYWW
1.25
0.25±0.05
15.24
4.1
1 2
4
5
6
7
0.50±0.05
0.50±0.05
All dimensions in mm XX.XX ±0.25mm. All pins on a
2.54mm pitch and within ±0.25mm of true position.
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
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
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