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SELECTION GUIDE
NKA Series
Isolated Sub-Miniature 1W Dual Output DC/DC Converters
Order Code
Nominal
Input
Voltage
Output
Voltage
Output
Current
Input
Current at
Rated Load
Ef?ciency
Isolation
Capacitance
MTTF 1 Package
Style
V
V
mA
mA
%
pF kHrs
NKA0303DC
NKA0305DC
3.3
3.3
±3.3
±5
±152
±100
407
383
74
79
20
22
195
1121
NKA0309DC
NKA0312DC
NKA0315DC
NKA0303SC
NKA0305SC
NKA0309SC
NKA0312SC
3.3
3.3
3.3
3.3
3.3
3.3
3.3
±9
±12
±15
±3.3
±5
±9
±12
±56
±42
±33
±152
±100
±56
±42
402
390
384
407
383
402
390
75
78
79
74
79
75
78
30
31
32
20
22
30
31
1035
375
206
195
1121
1035
375
DIP
SIP
FEATURES
RoHS compliant
NKA0315SC
NKA0503DC
3.3
5
±15
±3.3
±33
±152
384
259
79
77
32
22
206
205
Ef?ciency up to 82%
Wide temperature performance at full
1 Watt load, –40°C to 85°C
UL 94V-0 package material
Reduced footprint at 0.98cm 2
Industry standard pinout
Power sharing on output
3.3V, 5V & 12V Input
3.3V, 5V, 9V, 12V and 15V output
Internal SMD construction
Fully encapsulated with toroidal magnetics
No external components required
MTTF up to 1.6 Million hours
NKA0505DC
NKA0505DEC
NKA0509DC
NKA0512DC
NKA0515DC
NKA0503SC
NKA0505SC
NKA0505SEC
NKA0509SC
NKA0512SC
NKA0515SC
NKA1205DC
NKA1209DC
NKA1212DC
NKA1215DC
NKA1205SC
NKA1209SC
NKA1212SC
NKA1215SC
5
5
5
5
5
5
5
5
5
5
5
12
12
12
12
12
12
12
12
±5
±5
±9
±12
±15
±3.3
±5
±5
±9
±12
±15
±5
±9
±12
±15
±5
±9
±12
±15
±100
±100
±56
±42
±33
±152
±100
±100
±56
±42
±33
±100
±56
±42
±33
±100
±56
±42
±33
285
249
263
255
253
259
285
249
263
255
253
112
106
104
102
112
106
104
102
70
80
76
78
79
77
70
80
76
78
79
74
79
81
82
74
79
81
82
21
26
25
28
29
22
21
26
25
28
29
33
48
55
60
33
48
55
60
1697
1557
682
343
188
205
1697
1557
682
343
188
559
375
243
154
559
375
243
154
DIP
SIP
DIP
SIP
No electrolytic or tantalum capacitors
DESCRIPTION
NKA0505DEC/NKA0505SEC offer higher ef?ciency than NKA0505SC/NKA0505DC but over a narrower operating temperature range.
See temperature characteristics graph.
INPUT CHARACTERISTICS
The NKA sub-miniature series of industrial
temperature range DC/DC converters are the
standard building blocks for on-board distributed
power systems. The series offers smaller package
size, improved ef?ciency, lower output ripple and
3kVDC isolation capability through the use of state
of the art packaging and technology. Ideally suited
Parameter
Voltage range
Re?ected ripple current
Conditions
Continuous operation, 3.3V input types
Continuous operation, 5V input types
Continuous operation, 12V input types
3.3V input types
All other types
Min.
2.97
4.5
10.8
Typ.
3.3
5
12
30
20
Max.
3.63
5.5
13.2
60
35
Units
V
mA p-p
for providing dual rail supplies on primarily digital
ABSOLUTE MAXIMUM RATINGS
boards with the added bene?t of galvanic isolation
to reduce switching noise.
All of the rated power may be drawn from a single
pin provided the total load does not exceed 1 watt.
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
Input voltage V IN , NKA03 types
Input voltage V IN , NKA05 types
Input voltage V IN, NKA12 types
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
300°C
550mW
5.5V
7V
15V
　
All speci?cations typical at T A =25°C, nominal input voltage and rated output current unless otherwise speci?ed.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
KDC_NKA.J02 Page 1 of 7
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