FEATURES
s
Wide Temperature performance at
full 2 Watt load, 40C to 85C
s
Dual Output from a Single Input Rail
s
Industry Standard Pinout
s
Power Sharing on Output
s
1kVDC Isolation
s
Efficiency to 86%
s
Power Density up to 1.44W/cm
3
s
5V, 12V, 24V & 48V Input
s
5V, 9V,12V and 15V Output
s
Footprint from 1.46cm
2
s
UL 94V-0 Package Material
s
No Heatsink Required
s
Internal SMD Construction
s
Toroidal Magnetics
s
Fully Encapsulated
s
No External Components Required
s
MTTF up to 2.0 Million hours
s
Custom Solutions Available
s
No Electrolytic or Tantalum
Capacitors
DESCRIPTION
The NMH series of industrial temperature
range DC-DC converters are the standard
building blocks for on-board point-of-use
power systems. They are ideally suited for
providing dual rail supplies on single rail
boards with the added benefit of galvanic
isolation to reduce circuit noise. All of the
rated power may be drawn from a single pin
provided the total load does not exceed 2W.
Pin compatibility with the NMA 1 watt series
ensures minimal effort in upgrading
distributed power systems.
Parameter
Conditions
MIN
TYP
MAX
Units
Rated Power
2
T
A
= 40C to 85C
2
W
Output Voltage NMH0505
5
7.5
%
Accuracy
All other types
5
5
Line Regulation High V
IN
to low V
IN
1.0
1.2
%/%
10% load to rated load, 5V output types
5
10
Load Regulation
10% load to rated load, 9V output types
%
10% load to rated load, 12V output types
3
10
10% load to rated load, 15V output types
BW=DC to 20MHz, 5V output types
150
200
Ripple & Noise
BW=DC to 20MHz, 9V output types
100
150
mV p-p
BW=DC to 20MHz, 12V output types
80
150
BW=DC to 20MHz, 15V output types
70
150
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.
4 Replace suffix "S" with "D" for DIP package style.
All specifications typical at T
A
=25C, nominal input voltage and rated output current unless otherwise specified.
Short circuit duration
3
1second
Internal power dissipation
300mW
Lead temperature 1.5mm from case for 10 seconds
300C
Input voltage V
IN
, NMH05 types
7V
Input voltage V
IN
, NMH12 types
15V
Input voltage V
IN
, NMH24 types
28V
Input voltage V
IN
, NMH48 types
54V
SELECTION GUIDE
Nominal
Input
Output
Output
Input Current
Voltage
Voltage
Current
at Rated Load
MTTF
1
Order Code
(V)
(V)
(mA)
(mA)
(%)
(pF)
kHrs
NMH0505S
5
5
200
500
80
24
1574
NMH0509S
5
9
111
494
81
28
663
SIP
NMH0512S
5
12
83
488
82
30
338
NMH0515S
5
15
67
476
84
33
187
NMH1205S
12
5
200
208
80
35
490
NMH1209S
12
9
111
201
83
55
343
SIP
NMH1212S
12
12
83
198
84
63
229
NMH1215S
12
15
67
198
84
66
148
NMH2405S
24
5
200
103
81
41
318
NMH2409S
24
9
111
98
85
75
249
SIP
NMH2412S
24
12
83
97
86
95
183
NMH2415S
24
15
67
97
86
104
127
NMH4805S
48
5
200
51
82
45
235
NMH4809S
48
9
111
51
82
74
195
SIP
NMH4812S
48
12
83
49
85
90
152
NMH4815S
48
15
67
49
85
112
112
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
Continuous operation, 24V input types 21.6
24
26.4
Continuous operation, 48V input types 43.2
48
52.8
5V input types
50
Reflected Ripple Current
12V input types
70
mA p-p
24V input types
130
48V input types
200
INPUT CHARACTERISTICS
NMH SERIES
Isolated 2W Dual Output DC-DC Converters
www.dc-dc.com
NMH SERIES
Isolated 2W Dual 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 NMH.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
GENERAL CHARACTERISTICS
TEMPERATURE CHARACTERISTICS
PIN CONNECTIONS
Parameter
Conditions
MIN
TYP
MAX
Units
Isolation Test Voltage
Flash tested for 1 second
1000
VDC
Resistance
Viso=500V
1
10
G
Parameter
Conditions
MIN
TYP
MAX
Units
5V input types
95
Switching Frequency
12V input types
90
kHz
24 & 48V input types
80
Parameter
Conditions
MIN
TYP
MAX
Units
Specification
All output types
-40
85
C
Storage
-50
130
C
Case Temperature
5V output types
30
C
Above Ambient
12V output types
25
Cooling
Free air convection
14 Pin DIP
PIN
1
GND
7
NC
8
0V
9
+V
11
V
14
V
IN
7 Pin SIP
PIN
1
VIN
2
GND
4
V
5
0V
6
+V
PERFORMANCE CHARACTERISTICS
tolerance envelope
+
10%
+5%
V nominal
temperature derating graph
4
3
2
1
0
+2.5%
2.5%
7.5%
10
50
100
Output Load Current (%)
-40
0
50
100
150
Ambient Temperature (C)
85C
Safe Operating Area
19.50
9.80
MECHANICAL DIMENSIONS
7.70
15.24
1.09
2.13
7.62
4.60
3.60
0.55
0.45
0.55
0.45
2.54
19.50
7.50
10.0
1.880.50
1.25
12.70
4.60
3.60
2.54
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: 2.85g
7 Pin SIP
Weight: 2.76 g
NMH0505D
XYYWWi
NMH0505S
XYYWWi
1 2
5
6
4
0.30
0.20
8
9
11
14
7
1
0.30
0.20
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