NMA2405DC データシートの表示（PDF） - Murata Power Solutions
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NMA2405DC Datasheet PDF : 4 Pages
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NMA 24V & 48V Series
Isolated 1W Dual Output DC/DC Converters
FEATURES
n RoHS compliant
n Efficiency up to 80%
n Power density up to 0.85W/cm3
n Dual output from a single input rail
n UL 94V-0 package material
n No heatsink required
n Footprint from 1.17cm2
n Industry standard pinout
n Power sharing on output
n 1kVDC isolation
n 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
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
Nominal Input Output
Order Code
Voltage
Voltage
Output
Current
Efficiency
Isolation
Capacitance
MTTF1
Package
Style
V
V
mA
%
pF
kHrs
NMA2405DC
24
±5
±100
70
39
194
NMA2409DC
24
±9
±55
77
85
129
DIP
NMA2412DC
24
±12
±42
80
65
134
NMA2415DC
24
±15
±33
80
95
101
NMA2405SC
24
±5
±100
70
39
194
NMA2409SC
24
±9
±55
77
85
129
SIP
NMA2412SC
24
±12
±42
80
65
134
NMA2415SC
24
±15
±33
80
95
101
NMA4805DC
48
±5
±100
70
26
206
NMA4809DC
NMA4812DC
48
±9
±55
80
48
±12
±42
80
38
174
DIP
52
139
NMA4815DC
48
±15
±33
80
56
104
NMA4805SC
48
±5
±100
70
26
206
NMA4809SC
NMA4812SC
48
±9
±55
80
48
±12
±42
80
38
174
SIP
52
139
NMA4815SC
48
±15
±33
80
56
104
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
V
43.2
48
52.8
OUTPUT CHARACTERISTICS
Parameter
Conditions
Min. Typ. Max. Units
Rated Power2
TA=0°C to 70°C
1
W
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
Short-circuit protection3
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
Input voltage VIN, NMA24 types
Input voltage VIN, NMA48 types
1 second
300°C
450mW
28V
54V
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
2. See derating graph.
3. 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.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_NMAC2.D02 Page 1 of 4
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