NME2405DC [MURATA]
Isolated 1W Single Output DC/DC Converters; 隔离1W单输出DC / DC转换器
| 型号： | NME2405DC |
| 厂家： | 
muRata |
| 描述： | Isolated 1W Single Output DC/DC Converters |
| 文件： | 总4页 (文件大小：118K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NME 24V & 48V Series
s
Isolated 1W Single Output DC/DC Converters
SELECTION GUIDE
Package
Style
Order Code
V
V
5
mA
200
111
83
%
70
75
80
80
70
75
80
80
pF
40
59
78
79
40
59
78
79
kHrs
201
185
163
136
201
185
163
136
NME2405DC
NME2409DC
NME2412DC
NME2415DC
NME2405SC
NME2409SC
NME2412SC
NME2415SC
24
24
24
24
24
24
24
24
9
DIP
SIP
12
15
5
66
200
111
83
FEATURES
ꢀRoHS Compliant
9
12
15
66
ꢀSingle Isolated Output
ꢀ1kVDC Isolation
Recommended
Alternative
Obsolete
NME4805DC
NME4809DC
NME4812DC
NME4815DC
NME4805SC
NME4809SC
NME4812SC
NME4815SC
48
48
48
48
48
48
48
48
5
9
200
111
83
70
75
80
80
70
75
80
80
32
50
76
75
32
50
76
75
213
194
164
140
213
194
164
140
DIP
DIP
DIP
DIP
SIP
SIP
SIP
SIP
MER1S4805SC
ꢀEfficiency up to 80%
ꢀPower Density 1.45W/cm3
ꢀUL 94V-0 Package Material
ꢀFootprint from 0.69cm2
ꢀIndustry Standard Pinout
ꢀ24V & 48V Input
MER1S4809SC
MER1S4812SC
MER1S4815SC
MER1S4805SC
MER1S4809SC
MER1S4812SC
MER1S4815SC
12
15
5
66
200
111
83
9
12
15
66
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.
ꢀ5V, 9V, 12V and 15V Output
ꢀNo Heatsink Required
ꢀInternal SMD Construction
INPUT CHARACTERISTICS
Parameter
Conditions
Continuous operation, 24V input types
Continuous operation, 48V input types
Min.
21.6
43.2
Typ.
24
Max.
26.4
52.8
Units
V
ꢀFully Encapsulated with Toroidal
Voltage range
Magnetics
48
ꢀNo External Components Required
ꢀCustom Solutions Available
OUTPUT CHARACTERISTICS
Parameter
Rated Power2
Conditions
Min.
Typ.
Max.
1.0
Units
W
TA=0°C to 70°C
DESCRIPTION
Voltage Set Point Accuracy See tolerance envelope
The NME series of DC/DC Converters is
particularly suited to isolating and/or converting
DC power rails. The galvanic isolation allows
the device to be configured to provide an
isolated negative rail in systems where only
positive rails exist.
Line regulation
Load Regulation2
Ripple and Noise
High VIN to low VIN
1.2
15
%/%
%
10% load to rated load, 5V output types
10% load to rated load, all other output types
BW=DC to 20MHz, all output types
10
150
mV p-p
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection3
1 second
300°C
28V
Lead temperature 1.5mm from case for 10 seconds
Input voltage VIN, NME24 types
Input voltage VIN, NME48 types
54V
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
2. See derating curve.
3. Supply voltage must be disconnected 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.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
KDC_NME2.E02 Page 1 of 4
NME 24V & 48V Series
Isolated 1W Single Output DC/DC Converters
ISOLATION CHARACTERISTICS
Parameter
Isolation test voltage
Resistance
Conditions
Flash tested for 1 second
Viso= 500VDC
Min.
1000
1
Typ.
Max.
Units
VDC
GΩ
GENERAL CHARACTERISTICS
Parameter
Switching frequency
Conditions
All types
Min.
Typ.
100
Max.
Units
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Specification
Storage
Conditions
All output types
Min.
0
Typ.
Max.
70
Units
°C
-55
150
Cooling
Free air convection
TEMPERATURE DERATING GRAPH
TOLERANCE ENVELOPE
1.5
+10%
+5%
VNOM
+2.5%
70°C
1.0
-2.5%
-7.5%
0.5
0
Safe Operating Area
125°C
150
100
75
10 25
50
0
50
100
Output Load Current (%)
Ambient Temperature (°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 NME 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 NME 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 NME 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.
www.murata-ps.com/support
KDC_NME2.E02 Page 2 of 4
NME 24V & 48V Series
Isolated 1W Single Output DC/DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
DIP Package
PIN CONNECTIONS - 8 PIN DIP
Pin
1
Function
-VIN
1
4
5
0.267 (6.80)*
0.043 (1.09)
0.386 (9.80)
0.3 (7.62)
4
+VIN
NME2405DC
0.181 (4.60)
0.142 (3.60)
5
+VOUT
-VOUT
XYYWW
7
0.0118 (0.30)
0.0078 (0.20)
7
0.2 (5.08)
0.3 (7.62)
0.022 (0.55)
0.018 (0.45)
0.453 (11.50)
PIN CONNECTIONS - 4 PIN SIP
0.0763 (1.94)
SIP Package
0.45
Pin
1
Function
-VIN
(11.48)
0.074 (1.89)
0.109 (2.77)
0.0118 (0.30)
0.0078 (0.20)
2
+VIN
0.236
(6.00)**
0.393
(10.0)
3
-VOUT
0.049
(1.25)
NME2405SC
XYYWW
0.022 (0.55)
0.018 (0.45)
4
+VOUT
0.3
(7.62)
1
2
3
4
0.181 (4.60)
0.142 (3.60)
0.022 (0.55)
0.018 (0.45)
* 0.303 (7.70) for 48V variants
** 0.3 (7.50) for 48V variants
Weight: 1.48g (DIP) 1.30g (SIP)
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/support
KDC_NME2.E02 Page 3 of 4
NME 24V & 48V Series
Isolated 1W Single Output DC/DC Converters
PACKAGE SPECIFICATIONS (continued)
RECOMMENDED FOOTPRINT DETAILS
8 Pin DIP Package
4 Pin SIP Package
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TUBE OUTLINE DIMENSIONS
4 Pin SIP Tube
8 Pin DIP Tube
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Unless otherwise stated all dimensions in inches (mm) 0.5mm.
Tube length (8 Pin DIP) : 20.47 (520mm 2mm).
Tube Quantity : 35
Tube length (4 Pin SIP) : 20.47 (520mm 2mm).
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
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 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.
© 2013 Murata Power Solutions, Inc.
www.murata-ps.com/support
KDC_NME2.E02 Page 4 of 4
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