NMA 24V & 48V Series
Isolated 1W Dual Output DC/DC Converters
KDC_NMAC2.G02 Page 1 of 4
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SELECTION GUIDE
Order Code
Nominal
Input
Voltage
Output
Voltage
Output
Current
Efficiency
Isolation
Capacitance
MTTF
1
Package
Style
Recommended
Alternatives
(click for
data sheet)
V V mA % pF kHrs
Not recommended for new designs:
NMA2405SC 24 ±5 ±100 70 39 194
SIP
MEA1D2405SC
NMA2409SC 24 ±9 ±55 77 85 129 MEA1D2409SC
NMA2412SC 24 ±12 ±42 80 65 134 MEA1D2412SC
NMA2415SC 24 ±15 ±33 80 95 101 MEA1D2415SC
Obsolete:
NMA2405DC 24 ±5 ±100 70 39 194
DIP
MEA1D2405DC
NMA2409DC 24 ±9 ±55 77 85 129 MEA1D2409DC
NMA2412DC 24 ±12 ±42 80 65 134 MEA1D2412DC
NMA2415DC 24 ±15 ±33 80 95 101 MEA1D2415DC
NMA4805DC 48 ±5 ±100 70 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
SIP
MEA1D4805SC
NMA4809SC 48 ±9 ±55 80 38 174 MEA1D4809SC
NMA4812SC 48 ±12 ±42 80 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 Min. Typ. Max. Units
Voltage range
Continuous operation, 24V input types 21.6 24 26.4
V
Continuous operation, 48V input types 43.2 48 52.8
OUTPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Rated Power
2
TA=0°C to 70°C
1W
Voltage Set Point Accuracy See tolerance envelope
Line regulation High V
IN to low VIN 1.2 %/%
Load Regulation
10% load to rated load, 5V output types 15
%
10% load to rated load, all other output types 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 300°C
Internal power dissipation 450mW
Input voltage V
IN, NMA24 types 28V
Input voltage V
IN, NMA48 types 54V
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
2. See derating graph.
All specifications typical at T
A=25°C, nominal input voltage and rated output current unless otherwise specified.
FEATURES
RoHS compliant
Efficiency up to 80%
Power density up to 0.85W/cm
3
Dual output from a single input rail
UL 94V-0 package material
No heatsink required
Footprint from 1.17cm
2
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.