FEATURES
PRODUCT OVERVIEW
The NMK series of industrial temperature range
DC/DC converters, available in industry standard
SIP packaging offers a power upgrade path
from the 1W NMV series. The NMK offers 3kVDC
isolation with 5V output minimum effi ciency of
80% at 2W. The un-regulated NMK series has
superior output voltage set point accuracy of 6%
in conjunction with excellent load regulation for
this converter type.
Unbalanced loading capabilities on dual output
variants, all of the rated output power may be
drawn from a single output.
UL 60950 recognised
RoHS compliant
Effi ciency from 80%
Power density 1.33W/cm
Wide temperature performance at full
2 Watt load, –40°C to 85°C
UL 94V-0 package material
No heatsink required
Industry standard pinout
3kVDC isolation (1 minute)
5V & 12V input
5V, 9V, 12V, & 15V output
Fully encapsulated with toroidal
magnetics
Unbalanced loading capability
No electrolytic or tantalum capacitors
www.murata-ps.com
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For full details go to
3
1. See Ripple & Noise characterisation method.
2. Calculated using MIL-HDBK-217F FN2 with nominal input voltage at full load.
All specifi cations typical at T
SELECTION GUIDE
NMK0505SAC
NMK0509SAC
NMK0512SAC
NMK0515SAC
NMK1205SAC
NMK1209SAC
NMK1212SAC
NMK1215SAC
NMK0505SC
NMK0509SC
NMK0512SC
NMK0515SC
NMK1205SC
NMK1209SC
NMK1212SC
NMK1215SC
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
Refl ected ripple current
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
Input voltage V
Input voltage V
OUTPUT CHARACTERISTICS
Parameter
Rated Power
Voltage Set Point Accuracy
Line regulation
ISOLATION CHARACTERISTICS
Parameter
Isolation test voltage
Resistance
GENERAL CHARACTERISTICS
Parameter
Switching frequency
Order Code
IN
IN,
, NMK05 types
NMK12 types
A
12
12
12
12
12
12
12
12
V
5
5
5
5
5
5
5
5
=25°C, nominal input voltage and rated output current unless otherwise specifi ed.
Conditions
Continuous operation, 5V input types
Continuous operation, 12V input types
Conditions
T
See tolerance envelope
High V
Conditions
Flash tested for 1 minute
Viso= 1000VDC
Conditions
±12
±15
±12
±15
A
±5
±9
±5
±9
12
15
12
15
=-40
V
5
9
5
9
IN
3kVDC Isolated 2W Single & Dual Output DC/DC Converters
°C
to low V
±200
±111
±200
±111
400
222
167
133
400
222
167
133
±83
±67
±83
±67
mA
to 85
°C
IN
470
455
450
450
200
190
190
185
470
455
450
450
200
190
190
190
mA
Technical enquiries email: mk@murata-ps.com, tel:
5.7
4.2
3.8
3.4
4.2
2.6
2.4
2.0
3.9
3.7
3.5
3.4
2.4
2.2
1.9
5
300°C
550mW
7V
15V
%
7.3
5.9
5.1
4.5
4.9
3.1
2.9
2.4
6.2
5.3
4.8
5.2
3.9
2.8
2.7
2.4
18
20
18
17
25
19
17
14
24
18
14
12
21
16
13
13
mVp-p
3000
Min.
10.8
Min.
Min.
Min.
4.5
10
20
25
20
20
30
20
23
16
40
30
20
20
30
20
20
20
NMK Series
80
83
83
84
80
83
85
84
81
83
84
84
80
83
84
83
%
KDC_NMKC.D01 Page 1 of 5
1.05
Typ.
Typ.
Typ.
Typ.
7.5
12
60
5
83
86
87
87
83
87
88
89
83
86
87
87
84
87
87
87
%
+44 (0)1908 615232
Max.
Max.
Max.
Max.
13.2
5.5
1.2
15
2
pF
28
36
36
34
33
53
62
56
28
33
35
31
35
50
53
57
mA p-p
Units
Units
Units
Units
%/%
VDC
kHz
3998
3718
3328
2855
3532
2417
2246
2020
2324
2158
1931
1655
1952
2021
1821
1574
GΩ
kHrs
W
V