Document
www.murata-ps.com
SELECTION GUIDE
NKE Series
Isolated Sub-Miniature 1W Single Output DC-DC Converters
Nominal Input Voltage Output Voltage
Output Current Input
Current at Rated Load Efficiency
Isolation Capacitance MTTF1
Package Style
Order Code
FEATURES RoHS compliant Sub-miniature SIP & DIP styles 3kVDC isolation ‘Hi Pot Test’ UL60950 recognised Wide temperature performance at full
1 Watt load, –40°C to 85°C
UL 94V-0 package material Footprint at 0.69cm2 Industry standard pinout 3.3V, 5V & 12V inputs 3.3V, 5V, 9V, 12V & 15V outputs Internal SMD construction Fully encapsulated with toroidal
magnetics
MTTF up to 2.4 million hours Custom solutions available No electrolytic or tantalum capacitors
PRODUCT OVERVIEW
The NKE sub-miniature series of DC-DC Converters is particularly suited to isolating and/or converting DC power rails. A smaller package size, improved efficiency, lower output ripple and 3kVDC isolation capability through state of the art packaging and improved technology. The galvanic isolation allows the device to be configured to provide an isolated negative rail in systems where only positive rails exist. The wide temperature range guarantees startup from –40°C and full 1 watt output at 85°C.
V
NKE0303DC 3.3
NKE0305DC 3.3
NKE0309DC 3.3
NKE0303SC 3.3
NKE0305SC 3.3
NKE0309SC 3.3
NKE0503DC
5
NKE0505DC
5
NKE0505DEC 5
NKE0509DC
5
NKE0512DC
5
NKE0515DC
5
NKE0503SC
5
NKE0505SC
5
NKE0505SEC 5
NKE0509SC
5
NKE0512SC
5
NKE0515SC
5
NKE1205DC 12
NKE1209DC 12
NKE1212DC 12
NKE1215DC 12
NKE1205SC 12
NKE1209SC 12
NKE1212SC 12
NKE1215SC 12
V mA
3.3 303 5 200 9 111 3.3 303 5 200 9 111 3.3 303 5 200 5 200 9 111 12 83 15 66 3.3 303 5 200 5 200 9 111 12 83 15 66 5 200 9 111 12 83 15 66 5 200 9 111 12 83 15 66
% mA
Min. Typ.
400
68 72
400
72 75
403
71 74
400
68 72
400
72 75
403
71 74
270
70 74
289
66 69
250
73 77
266
72 75
260
73 78
256
74 78
270
70 74
289
66 69
250
73 77
266
72 75
260
73 78
256
74 78
117
68 72
107
72 78
105
73 79
103
76 81
117
68 72
107
72 78
105
73 79
103
76 81
MIL. Tel. pF
kHrs
30
4337 46,969
35
4105 46,783 DIP
30
1904 28,918
30
4337 46,969
35
4105 46,783 SIP
30
1904 28,918
40
3710 36,234
28
4277 34,897
34
2686 35,919
DIP
29
3729 76,553
30
2910 73,523
32
2211 71,725
40
3710 36,234
28
4277 34,897
34
2686 35,919
SIP
29 3729 76,553
30 2910 73,523
32 2211 71,725
35 3981 58,202
50 3482 57,895 DIP
57 1982 77,806
60 2122 56,404
35 3981 58,202
50 3482 57,895 SIP
57 1982 77,806
60 2122 56,404
NKE0505SEC/NKE0505DEC offers higher efficiency than NKE0505SC/NKE0505DC but over a narrower operating temperature range. See temperature characteristics graph.
INPUT CHARACTERISTICS
Parameter
Conditions
Continuous operation, 3.3V input types
Voltage range
Continuous operation, 5V input types
Continuous operation, 12V input types
Reflected ripple current 3.3V input types
Min. Typ. Max. Units
2.97 3.3 3.63
4.5
5.0
5.5
V
10.8 12.0 13.2
40
60 mA p-p
For full details go to www.murata-ps.com/rohs
www.murata.com
1.Calculated using MIL-HDBK-217 FN2 and Telcordia SR-332 calculation model with nominal input voltage at full load. All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
KDC_NKE.L01 Page 1 of 9
NKE Series
Isolated Sub-Miniature 1W Single Output DC-DC Converters
OUTPUT CHARACTERISTICS Parameter Rated Power Voltage Set Point Accuracy Line regulation
Load Regulation1
Ripple and Noise
Conditions TA=-40°C to 120°C, see derating graphs See tolerance envelope High VIN to low VIN 10% load to rated load, 3.3V output types & 0309 10% load to rated load, 5V output types 10% load to rated load, 9V output types 10% load to rated load, 12V output types 10% load to rated load, 15V output types BW=DC to 20MHz, 3.3V output types & 0305, 0505SEC, 0505DEC BW=DC to 20MHz, other 5V output types BW=DC to 20MHz, 9V output types BW=DC to 20MHz, 12V output types BW=DC to 20MHz, 15V output types
Min.
Typ.
Max.
Units
1.0
W
1.0
1.2
%/%
10
15
12
15
7.5
10
%
6.5
9.5
6.0
8.5
40
80
77
100
43
90
mV p-p
35
65
32
55
ISOLATION CHARACTERISTICS
Parameter
Conditions
Isolation test voltage
Flash tested for 1 second
Resistance
Viso= 1000VDC
Min.
Typ.
Max.
Units
3000
VDC
10
GΩ
GENERAL CHARACTERISTICS
Parameter
Conditions
Switching frequency
All output types
Min.
Typ.
Max.
Units
115
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Specification
All output types, See safety approval section for UL temperature specification1
Storage
Case temperature rise above
0505D/S, 1205D/S
ambient
All other output types
Cooling
Free air convection
Min.
Typ.
Max.
Units
-40
85
-50
130
°C
41
32
ABSOLUTE MAXIMUM RATINGS Lead temperature 1.5mm from case for 10 seconds
Wave Solder
Input voltage VIN, NKE03 types .