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NMA2405SC PDF даташит

Спецификация NMA2405SC изготовлена ​​​​«Murata» и имеет функцию, называемую «Isolated 1W Dual Output DC/DC Converters».

Детали детали

Номер произв NMA2405SC
Описание Isolated 1W Dual Output DC/DC Converters
Производители Murata
логотип Murata логотип 

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NMA2405SC Даташит, Описание, Даташиты
www.murata-ps.com NOT RECOMMENDED NMA 24V & 48V Series
FOR NEW DESIGNS Isolated 1W Dual Output DC/DC Converters
FEATURES
„RoHS compliant
„Efficiency up to 80%
„Power density up to 0.85W/cm3
„Dual output from a single input rail
„UL 94V-0 package material
„No heatsink required
„Footprint from 1.17cm2
„Industry standard pinout
„Power sharing on output
„1kVDC isolation
„24V & 48V input
„5V, 9V, 12V and 15V output
„Internal SMD construction
„Fully encapsulated with toroidal
magnetics
„No external components required
DESCRIPTION
The NMA series of DC/DC converters are the
standard buliding blocks for on-board distrib-
uted power systems. They are 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.
SELECTION GUIDE
Order Code
Nominal
Input
Voltage
V
Output
Voltage
V
Output
Current
mA
Efficiency
Isolation
Capacitance
MTTF1
Package
Style
% pF kHrs
Recommended
Alternatives
(click for
data sheet)
Not recommended for new designs:
NMA2405SC 24
±5 ±100 70
39 194
MEA1D2405SC
NMA2409SC
NMA2412SC
24
24
±9 ±55
±12 ±42
77
80
85 129
MEA1D2409SC
SIP
65 134
MEA1D2412SC
NMA2415SC 24
±15 ±33
80
95 101
MEA1D2415SC
Obsolete:
NMA2405DC 24
±5 ±100 70
39 194
MEA1D2405DC
NMA2409DC 24
±9 ±55 77
85 129
MEA1D2409DC
NMA2412DC 24
±12 ±42
80
65 134
MEA1D2412DC
NMA2415DC
NMA4805DC
24
48
±15 ±33
±5 ±100
80
70
95 101 DIP MEA1D2415DC
26 206
MEA1D4805DC
NMA4809DC 48
±9 ±55 80
38 174
MEA1D4809DC
NMA4812DC 48
±12 ±42
80
52 139
MEA1D4812DC
NMA4815DC 48
±15 ±33
80
56 104
MEA1D4815DC
NMA4805SC 48
±5 ±100 70
26 206
MEA1D4805SC
NMA4809SC
NMA4812SC
48
48
±9 ±55
±12 ±42
80
80
38 174
MEA1D4809SC
SIP
52 139
MEA1D4812SC
NMA4815SC 48
±15 ±33
80
56 104
MEA1D4815SC
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
Conditions
Voltage range
Continuous operation, 24V input types
Continuous operation, 48V input types
Min. Typ. Max. Units
21.6 24 26.4
43.2 48 52.8
V
OUTPUT CHARACTERISTICS
Parameter
Conditions
Min. Typ. Max. Units
Rated Power2
TA=0°C to 70°C
1W
Voltage Set Point Accuracy See tolerance envelope
Line regulation
High VIN to low VIN
1.2 %/%
Load Regulation
10% load to rated load, 5V output types
10% load to rated load, all other output types
15
%
10
Ripple and Noise
BW=DC to 20MHz, all input types
150 mV p-p
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
Input voltage VIN, NMA24 types
Input voltage VIN, NMA48 types
300°C
450mW
28V
54V
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
2. See derating graph.
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_NMAC2.G02 Page 1 of 4









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NMA2405SC Даташит, Описание, Даташиты
NMA 24V & 48V Series
Isolated 1W Dual Output DC/DC Converters
ISOLATION CHARACTERISTICS
Parameter
Conditions
Isolation test voltage
Flash tested for 1 second
Resistance
Viso= 500VDC
Min. Typ. Max. Units
1000 VDC
10 GΩ
GENERAL CHARACTERISTICS
Parameter
Conditions
Switching frequency
All input types
Min. Typ. Max. Units
100 kHz
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Specification
All output types
Storage
Cooling
Free air convection
Min. Typ. Max. Units
0 70
°C
-55 150
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
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 NMA 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 NMA 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 NMA 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.
APPLICATION NOTES
Minimum load
The minimum load to meet datasheet specification is 10% of the full rated load across the specified input voltage range. Lower than 10% minimum loading will result in
an increase in output voltage, which may rise to typically double the specified output voltage if the output load falls to less than 5%.
www.murata-ps.com/support
KDC_NMAC2.G02 Page 2 of 4









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NMA2405SC Даташит, Описание, Даташиты
NMA 24V & 48V Series
Isolated 1W Dual Output DC/DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
DIP package
0.77 (19.50)
0.385
(9.80) NMA2405DC
XYYWWi
SIP package
0.236
(6.00)**
0.77
(19.50)
0.268
(6.80)*
0.394
(10.00)
NMA2405SC
XYYWWi
0.022 (0.55)
0.0178 (0.45)
1 2 456
0.181 (4.60)
0.142 (3.60)
0.022 (0.55)
0.0178 (0.45)
0.3 (7.62)
1
14
11
0.1 (2.54)
0.043
(1.09)
0.181 (4.60)
0.141 (3.60)
0.079
(2.00)
7
98
0.0118 (0.30)
0.0079 (0.20)
0.05
(1.25)
0.1 (2.54)
0.5 (12.70)
0.22 (0.55)
0.0178 (0.45)
0.0118 (0.30)
0.0079 (0.20)
0.084
(2.13)
0.6 (15.24)
* 0.303 (7.70) for 48V variants
** 0.295 (7.50) for 48V variants
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.
Weight:
2.4g (24V DIP)
2.9g (48V DIP)
2.2g (24V SIP)
2.9g (48V SIP)
PIN CONNECTIONS - 14 PIN DIP
Pin Function
1 -VIN
7 NC
8 OV
9 +VOUT
11 -VOUT
14 +VIN
PIN CONNECTIONS - 7 PIN SIP
Pin Function
1 +VIN
2 -VIN
4 -VOUT
5 OV
6 +VOUT
TEMPERATURE DERATING GRAPH
1.5
1.0 70°C
0.5 Safe Operating Area
125ºC
0
0 50 100 150
Ambient Temperature (ºC)
TOLERANCE ENVELOPE
+10%
+5%
V
NOM
Typical Load Line
+2.5%
-2.5%
-7.5%
10 25 50 75 100
Output Load Current (%)
The voltage tolerance envelope shows typical load regulation characteristics
for this product series. The tolerance envelope is the maximum output volt-
age variation due to changes in output loading.
www.murata-ps.com/support
KDC_NMAC2.G02 Page 3 of 4










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