MURATA NKA0505DEC

NKA Series
Isolated Sub-Miniature 1W Dual Output DC/DC Converters
SELECTION GUIDE
FEATURES
RoHS compliant
Efficiency up to 82%
Wide temperature performance at full
1 Watt load, –40°C to 85°C
UL 94V-0 package material
Reduced footprint at 0.98cm2
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
No electrolytic or tantalum capacitors
DESCRIPTION
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 efficiency, lower output ripple and
3kVDC isolation capability through the use of state
of the art packaging and technology. Ideally suited
for providing dual rail supplies on primarily digital
boards with the added benefit 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.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
Order Code
Nominal
Input
Voltage
V
NKA0303DC
NKA0305DC
NKA0309DC
NKA0312DC
NKA0315DC
NKA0303SC
NKA0305SC
NKA0309SC
NKA0312SC
NKA0315SC
NKA0503DC
NKA0505DC
NKA0505DEC
NKA0509DC
NKA0512DC
NKA0515DC
NKA0503SC
NKA0505SC
NKA0505SEC
NKA0509SC
NKA0512SC
NKA0515SC
NKA1205DC
NKA1209DC
NKA1212DC
NKA1215DC
NKA1205SC
NKA1209SC
NKA1212SC
NKA1215SC
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
5
5
5
5
5
5
5
5
5
5
5
5
12
12
12
12
12
12
12
12
V
mA
Input
Current at
Rated Load
mA
±3.3
±5
±9
±12
±15
±3.3
±5
±9
±12
±15
±3.3
±5
±5
±9
±12
±15
±3.3
±5
±5
±9
±12
±15
±5
±9
±12
±15
±5
±9
±12
±15
±152
±100
±56
±42
±33
±152
±100
±56
±42
±33
±152
±100
±100
±56
±42
±33
±152
±100
±100
±56
±42
±33
±100
±56
±42
±33
±100
±56
±42
±33
407
383
402
390
384
407
383
402
390
384
259
285
249
263
255
253
259
285
249
263
255
253
112
106
104
102
112
106
104
102
Output
Voltage
Output
Current
Efficiency
%
Isolation
MTTF1 Package
Capacitance
Style
pF
kHrs
74
79
75
78
79
74
79
75
78
79
77
70
80
76
78
79
77
70
80
76
78
79
74
79
81
82
74
79
81
82
20
22
30
31
32
20
22
30
31
32
22
21
26
25
28
29
22
21
26
25
28
29
33
48
55
60
33
48
55
60
195
1121
1035
375
206
195
1121
1035
375
206
205
1697
1557
682
343
188
205
1697
1557
682
343
188
559
375
243
154
559
375
243
154
DIP
SIP
DIP
SIP
DIP
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.
NKA0505DEC/NKA0505SEC offer higher efficiency than NKA0505SC/NKA0505DC but over a narrower operating temperature range.
See temperature characteristics graph.
INPUT CHARACTERISTICS
Parameter
Voltage range
Reflected ripple current
Conditions
Min.
Typ.
Max.
Continuous operation, 3.3V input types
Continuous operation, 5V input types
Continuous operation, 12V input types
3.3V input types
All other types
2.97
4.5
10.8
3.3
5
12
30
20
3.63
5.5
13.2
60
35
Units
V
mA p-p
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection2
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
Input voltage VIN, NKA03 types
Input voltage VIN, NKA05 types
Input voltage VIN, NKA12 types
1 second
300°C
550mW
5.5V
7V
15V
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
2. Supply voltage must be discontinued at the end of the short circuit duration.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
Technical enquiries - email: [email protected], tel: +44 (0)1908 615232
KDC_NKAC.I02 Page 1 of 4
NKA Series
Isolated Sub-Miniature 1W Dual Output DC/DC Converters
OUTPUT CHARACTERISTICS
Parameter
Conditions
Rated Power1
Voltage Set Point Accuracy
Line regulation
TA=-40°C to 120°C
See tolerance envelope
High VIN to low VIN
10% load to rated load, 0312 & 0315
10% load to rated load, 3.3V output types
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, 0312 & 0315
BW=DC to 20MHz, 3.3V output types
BW=DC to 20MHz, 5V output types
BW=DC to 20MHz, 9V output types
BW=DC to 20MHz, 12V output types
BW=DC to 20MHz, 15V output types
Load Regulation2
Ripple and Noise
Min.
Typ.
Max.
Units
1
W
1.0
8
10
10
6.5
6
6
25
40
50
40
40
40
1.2
14
15
12
8
8.5
7
60
80
75
65
60
60
%/%
Typ.
Max.
%
mV p-p
ISOLATION CHARACTERISTICS
Parameter
Conditions
Min.
Isolation test voltage
Resistance
Flash tested for 1 second
Viso= 1000VDC
3000
Parameter
Conditions
Min.
Switching frequency
0303, 0305, 0312, 0315, 0503 and 0505XE
All other types
Units
VDC
GΩ
10
GENERAL CHARACTERISTICS
Typ.
Max.
95
120
Units
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Min.
Specification
Storage
All output types
-40
-50
Case temperature rise above
ambient
Cooling
5V output types
All other output types
Free air convection
Typ.
Max.
Units
85
130
30
21
°C
TECHNICAL NOTES
ISOLATION VOLTAGE
‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test voltage,
applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.
Murata Power Solutions NKA series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 1kVDC for 1 second.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
For a part holding no specific agency approvals, such as the NKA series, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or
60VDC. The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part
could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; but then the circuitry on both sides of the barrier must
be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-accessible circuitry according to
safety standard requirements.
REPEATED HIGH-VOLTAGE ISOLATION TESTING
It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials,
construction and environment. The NKA series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enameled wire. While
parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. Any material, including this enamel (typically
polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. We
therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from specified test voltage.
This consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further
insulation system of physical spacing or barriers.
1. See Derating Graphs.
2. 12V input types have typically 3% less load regulation.
www.murata-ps.com
Technical enquiries - email: [email protected], tel: +44 (0)1908 615232
KDC_NKAC.I02 Page 2 of 4
NKA Series
Isolated Sub-Miniature 1W Dual Output DC/DC Converters
1.5
All other types.
Output Power (W)
Output Power (W)
TEMPERATURE DERATING GRAPHS
NKA0303DC/SC, 0305DC/SC
1.5
0309DC/SC, 0505DEC/SEC
types only.
1.0
85°C
Safe Operating Area
0.5
0
-40
100
50
0
Ambient Temperature (°C)
85°C
1.0
0.5
Safe Operating Area
120°C
0
-40
150
100
50
0
Ambient Temperature (°C)
150
TOLERANCE ENVELOPES
All other types.
3.3V output types.
+10%
+9%
oad Lin
Output Voltage
+1%
VNOM
e
+5%
VNOM
+1%
Output Voltage
Typical
L
-7%
-7%
-15%
75
50
25
Output Load Current (%)
10
Typical
L
oad Line
+2.5%
-2.5%
-7.5%
10
100
75
50
25
Output Load Current (%)
100
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
PIN CONNECTIONS - 14 PIN DIP
0.768 (19.50)
0.652 (16.55)
0.234 (5.95)
0.386 (9.80)
NKA0505DC
XYYWW
Pin
Function
1
-VIN
7
NC
8
OV
9
+VOUT
11
-VOUT
14
+VIN
PIN CONNECTIONS - 6 PIN SIP
0.213 (5.40)
0.181 (4.60)
0.142 (3.60)
0.0196±0.00196 (0.50±0.05)
0.297
(7.55)
NKA0515SC
XYYWW
0.181 (4.60)
0.142 (3.60)
1
2
4
5
0.024 (0.60)
0.020 (0.50)
6
0.10 (2.54)
Pin
Function
1
+VIN
2
-VIN
4
-VOUT
5
OV
6
+VOUT
0.600 (15.24)
1
7
0.066±0.02 0.0196±0.00196 (0.50±0.05)
(1.675±0.50)
0.043 (1.09)
0.300 (7.62)
14
11
9
8
0.012(0.30)
0.008(0.20)
0.012 (0.30)
0.008 (0.20)
0.084 (2.13)
0.10 (2.54)
0.049
(1.25)
All dimensions in inches ±0.01 (mm ±0.25mm). All pins on a 0.1 (2.54) pitch and within ±0.01 (0.25) of true position.
www.murata-ps.com
0.50(12.70)
Weight: 1.4g (SIP) 1.9g (DIP)
Technical enquiries - email: [email protected], tel: +44 (0)1908 615232
KDC_NKAC.I02 Page 3 of 4
NKA Series
Isolated Sub-Miniature 1W Dual Output DC/DC Converters
PACKAGE SPECIFICATIONS (continued)
RECOMMENDED FOOTPRINT DETAILS
6 Pin SIP Package
14 Pin DIP Package
0.0453 (1.00)
Ø
0.0394 (1.15) 6 HOLES
Ø
Ø0.1
0.0453 (1.00)
0.0394 (1.15) 5 HOLES
Ø0.1
0.1 (2.54)
0.1 (2.54)
0.1 (2.54)
0.1 (2.54)
TUBE OUTLINE DIMENSIONS
6 Pin SIP Tube
14 Pin DIP Tube
œœ
œœ
Unless otherwise stated all dimensions in inches (mm) ±0.5mm.
Tube length (14 Pin DIP) : 20.47 (520mm ±2mm).
Tube length (6 Pin SIP) : 20.67 (525mm ±2mm).
DIP Tube Quantity : 25
SIP Tube Quantity : 30
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300°C for 10 seconds. The pin termination
finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate.
Both types in this series are backward compatible with Sn/Pb soldering systems.
For further information, please visit www.murata-ps.com/rohs
USA:
Tucson (Az), Tel: (800) 547 2537, email: [email protected]
Canada: Toronto, Tel: (866) 740 1232, email: [email protected]
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
www.murata-ps.com email: [email protected]com ISO 9001 REGISTERED
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice.
© 2008 Murata Power Solutions, Inc.
www.murata-ps.com
UK:
Milton Keynes, Tel: +44 (0)1908 615232, email: [email protected]
France:
Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: [email protected]
Germany: München, Tel: +49 (0)89-544334-0, email: [email protected]
Japan:
Tokyo, Tel: 3-3779-1031, email: [email protected]
Osaka, Tel: 6-6354-2025, email: [email protected]
Website: www.murata-ps.jp
China:
Shanghai, Tel: +86 215 027 3678, email: [email protected]
Guangzhou, Tel: +86 208 221 8066, email: [email protected]
Technical enquiries - email: [email protected], tel: +44 (0)1908 615232
KDC_NKAC.I02 Page 4 of 4