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NMH4809DC PDF даташит

Спецификация NMH4809DC изготовлена ​​​​«Murata» и имеет функцию, называемую «Isolated 2W Dual Output DC/DC Converters».

Детали детали

Номер произв NMH4809DC
Описание Isolated 2W Dual Output DC/DC Converters
Производители Murata
логотип Murata логотип 

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NMH4809DC Даташит, Описание, Даташиты
www.murata-ps.com
NMH Series
Isolated 2W Dual Output DC/DC Converters
FEATURES
n RoHS compliant
n Efficiency up to 86%
n Power density up to 1.44W/cm3
n Wide temperature performance at full
2 watt load, –40°C to 85°C
n Dual output from a single input rail
n UL 94V-0 package material
n No heatsink required
n Footprint from 1.46cm2
n Industry standard pinout
n Power sharing on output
n 1kVDC isolation
n 5V, 12V, 24V & 48V input
n 5V, 9V, 12V and 15V output
n Internal SMD construction
n Fully encapsulated with toroidal
magnetics
n No external components required
n MTTF up to 1.5 million hours
n No electrolytic or tantalum capacitors
DESCRIPTION
The NMH series of industrial temperature range
DC/DC converters are the standard buliding blocks
for on-board point-of-use power systems. They
are ideally suited for providing dual rail supplies
on single rail boards with the added benefit of
galvanic isolation to reduce circuit noise. All of
the rated power may be drawn from a single pin
provided the total load does not exceed 2 watts.
Pin compatibility with the NMA 1 watt series
ensures minimal effort in upgrading distributed
power systems.
SELECTION GUIDE
Order Code
Nominal
Input
Voltage
V
NMH0505DC
5
NMH0509DC
5
NMH0512DC
5
NMH0515DC
5
NMH0505SC
5
NMH0509SC
5
NMH0512SC
5
NMH0515SC
5
NMH1205DC
12
NMH1209DC
12
NMH1212DC
12
NMH1215DC
12
NMH1205SC
12
NMH1209SC
12
NMH1212SC
12
NMH1215SC
12
NMH2405DC
24
NMH2409DC
24
NMH2412DC
24
NMH2415DC
24
NMH2405SC
24
NMH2409SC
24
NMH2412SC
24
NMH2415SC
24
NMH4805DC
48
NMH4809DC
48
NMH4812DC
48
NMH4815DC
48
NMH4805SC
48
NMH4809SC
48
NMH4812SC
48
NMH4815SC
48
Output
Voltage
V
±5
±9
±12
±15
±5
±9
±12
±15
±5
±9
±12
±15
±5
±9
±12
±15
±5
±9
±12
±15
±5
±9
±12
±15
±5
±9
±12
±15
±5
±9
±12
±15
Output
Current
mA
±200
±111
±83
±67
±200
±111
±83
±67
±200
±111
±83
±67
±200
±111
±83
±67
±200
±111
±83
±67
±200
±111
±83
±67
±200
±111
±83
±67
±200
±111
±83
±67
Input
Current at
Rated Load
mA
500
494
488
476
500
494
488
476
208
201
198
198
208
201
198
198
103
98
97
97
103
98
97
97
51
51
49
49
51
51
49
49
Efficiency
Isolation
Capacitance
MTTF1
Package
Style
% pF kHrs
80 24 1574
81
82
28
30
663
338
DIP
84 33 187
80 24 1574
81
82
28
30
663
338
SIP
84 33 187
80 35 490
83
84
55
63
343
229
DIP
84 66 148
80 35 490
83
84
55
63
343
229
SIP
84 66 148
81 41 318
85
86
75
95
249
183
DIP
86 104 127
81 41 318
85
86
75
95
249
183
SIP
86 104 127
82 45 235
82
85
74
90
195
152
DIP
85 112 112
82 45 235
82
85
74
90
195
152
SIP
85 112 112
INPUT CHARACTERISTICS
Parameter
Conditions
Continuous operation, 5V input types
Voltage range
Continuous operation, 12V input types
Continuous operation, 24V input types
Continuous operation, 48V input types
5V input types
Reflected ripple current
12V input types
24V input types
48V input types
Min. Typ. Max. Units
4.5 5 5.5
10.8 12 13.2
21.6 24 26.4
V
43.2 48 52.8
50
70
130
mA p-p
200
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
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_NMH.E03  Page 1 of 6









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NMH4809DC Даташит, Описание, Даташиты
OUTPUT CHARACTERISTICS
Parameter
Rated Power1
Voltage Set Point Accuracy
Line regulation
Load Regulation
Ripple and Noise
Conditions
TA=-40°C to 85°C
NMH0505DC/SC
All other types
High VIN to low VIN
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, 5V output types
BW=DC to 20MHz, 9V output types
BW=DC to 20MHz, 12V output types
BW=DC to 20MHz, 15V output types
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
Input voltage VIN, NMH05 types
Input voltage VIN, NMH12 types
Input voltage VIN, NMH24 types
Input voltage VIN, NMH48 types
ISOLATION CHARACTERISTICS
Parameter
Conditions
Isolation test voltage
Flash tested for 1 second
Resistance
Viso= 500V
GENERAL CHARACTERISTICS
Parameter
Conditions
5V input types
Switching frequency
12V input types
24V & 48V input types
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Specification
All output types
Storage
Case Temperature above ambient
5V output types
12V output types
Cooling
Free air convection
TEMPERATURE DERATING GRAPH
3
2 85°C
1 Safe Operating Area
0-40 0 50 100 150
Ambient Temperature (°C)
1. See derating graph.
www.murata-ps.com/support
NMH Series
Isolated 2W Dual Output DC/DC Converters
Min. Typ. Max. Units
2W
-5
-5
7.5
5
%
1.0 1.2 %/%
5 10
3 10 %
150 200
100
80
150
150
mV p-p
70 150
300°C
300mW
7V
15V
28V
54V
Min. Typ. Max. Units
1000 VDC
1 10
GΩ
Min. Typ. Max. Units
95
90 kHz
80
Min. Typ. Max. Units
-40 85
-50 30 130 °C
25
TOLERANCE ENVELOPE
+10%
+5%
VNOM
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 voltage variation due
to changes in output loading.
KDC_NMH.E03  Page 2 of 6









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NMH4809DC Даташит, Описание, Даташиты
NMH Series
Isolated 2W Dual Output DC/DC Converters
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 NMH 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 NMH 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 NMH 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.
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
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%.
Capacitive loading and start up
Typical start up times for this series, with a typical input voltage rise time of 2.2µs and output capacitance of 10µF, are shown in the table below. The product
series will start into a capacitance of 47µF with an increased start time, however, the maximum recommended output capacitance is 10µF.
NMH0505SC
NMH0509SC
NMH0512SC
NMH0515SC
NMH1205SC
NMH1209SC
NMH1212SC
NMH1215SC
Start-up time
µs
1072
2481
3546
5380
672
1152
1580
3150
NMH2405SC
NMH2409SC
NMH2412SC
NMH2415SC
NMH4805SC
NMH4809SC
NMH4812SC
NMH4815SC
Start-up time
µs
1064
1544
4398
4230
966
1220
2822
4275
Typical Start-Up Wave Form
www.murata-ps.com/support
KDC_NMH.E03  Page 3 of 6










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