NMH SERIES
Isolated 2W Dual Output DC-DC Converters
SELECTION GUIDE
Nominal
Input
Voltage
Output
Voltage
Output
Current
Input Current
at Rated Load
MTTF
1
Order Code
NMH0505S
NMH0509S
NMH0512S
NMH0515S
NMH1205S
NMH1209S
FEATURES
s
Wide Temperature performance at
full 2 Watt load, –40°C to 85°C
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.
NMH1212S
NMH1215S
NMH2405S
NMH2409S
NMH2412S
NMH2415S
NMH4805S
NMH4809S
NMH4812S
NMH4815S
(V)
5
5
5
5
12
12
12
12
24
24
24
24
48
48
48
48
(V)
5
9
12
15
5
9
12
15
5
9
12
15
5
9
12
15
(mA)
±200
±111
±83
±67
±200
±111
±83
±67
±200
±111
±83
±67
±200
±111
±83
±67
(mA)
500
494
488
476
208
201
198
198
103
98
97
97
51
51
49
49
(%)
80
81
82
84
80
83
84
84
81
85
86
86
82
82
85
85
(pF)
24
28
30
33
35
55
63
66
41
75
95
104
45
74
90
112
kHrs
1574
663
338
187
490
343
229
148
318
249
183
127
235
195
152
112
SIP
SIP
SIP
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
Conditions
MIN
TYP
MAX
Units
Continuous operation, 5V input types
4.5
Continuous operation, 12V input types 10.8
Voltage Range
Continuous operation, 24V input types 21.6
Continuous operation, 48V input types 43.2
5V input types
12V input types
Reflected Ripple Current
24V input types
48V input types
5
12
24
48
50
70
130
200
5.5
13.2
26.4
52.8
V
mA p-p
OUTPUT CHARACTERISTICS
Parameter
Conditions
2
MIN
TYP
MAX
Units
T
A
= –40°C to 85°C
NMH0505
All other types
Line Regulation High V
IN
to low V
IN
10% load to rated load, 5V output types
10% load to rated load, 9V output types
Load Regulation
10% load to rated load, 12V output types
10% load to rated load, 15V output types
BW=DC to 20MHz, 5V output types
BW=DC to 20MHz, 9V output types
Ripple & Noise
BW=DC to 20MHz, 12V output types
BW=DC to 20MHz, 15V output types
Rated Power
Output Voltage
Accuracy
–5
–5
1.0
5
3
150
100
80
70
2
7.5
5
1.2
10
10
200
150
150
150
W
%
%/%
%
mV p-p
ABSOLUTE MAXIMUM RATINGS
Short circuit duration
3
Internal power dissipation
Lead temperature 1.5mm from case for 10 seconds
Input voltage V
IN
, NMH05 types
Input voltage V
IN
, NMH12 types
Input voltage V
IN
, NMH24 types
Input voltage V
IN
, NMH48 types
1second
300mW
300°C
7V
15V
28V
54V
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.
4 Replace suffix “S” with “D” for DIP package style.
All specifications typical at T
A
=25°C, nominal input voltage and rated output current unless otherwise specified.
NMH SERIES
Isolated 2W Dual 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
+V
11
–V
14
V
IN
7 Pin SIP
PIN
1
VIN
2 GND
4
–V
5
0V
6
+V
Isolation Test Voltage
Resistance
Flash tested for 1 second
Viso=500V
10
GENERAL CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX
Units
Switching Frequency
5V input types
12V input types
24 & 48V input types
95
90
80
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX
Units
Specification
Storage
Case Temperature
Above Ambient
Cooling
All output types
5V output types
12V output types
Free air convection
-40
-50
30
25
85
130
°C
°C
°C
PERFORMANCE CHARACTERISTICS
tolerance envelope
+
10%
+5%
V nominal
4
+2.5%
–2.5%
– 7.5%
2
1
0
3
temperature derating graph
85°C
Safe Operating Area
10
50
Output Load Cur rent (%)
100
-40
0
50
100
Ambient Temperature (°C)
150
MECHANICAL DIMENSIONS
14 Pin DIP
Weight: 2.85g
19.50
2.13
15.24
1.09
NMH0505D
9.80
1
7.70
7.62
7
0.30
0.20
XYYWWi
4.60
3.60
0.55
0.45
2.54
14
1
1
9
8
7 Pin SIP
Weight: 2.76g
19.50
1.88±0.50
7.50
NMH0505S
10.0
1
.25
XYYWWi
12.70
0.30
0.20
4.60
3.60
1 2
4
2.54
5
6
0.55
0.45
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 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
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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