Document
Isolated 1W Dual Output DC-DC Converters
features p p p p p p p p p p p p p p p p p p p
Wide Temperature performance at full 1 Watt load, –40°C to 85°C Dual Output from a Single Input Rail Industry Standard Pinout Power Sharing on Output 1kVDC Isolation Efficiency to 78% Power Density upto 0.85W/cm! 5V & 12V Input 5V, 9V, 12V and 15V Output Footprint from 1.17cm UL 94V-0 Package Material No Heatsink Required Internal SMD Construction Toroidal Magnetics Fully Encapsulated No External Components Required MTTF up to 2.1 Million hours Custom Solutions Available No Electrolytic or Tantalum Capacitors 7 Pin SIP
NMA SERIES
pin connections
14 Pin DIP (top view)
V
IN
–V 11
+V 9
0V 8 7 NC
14 1 GND
description
The NMA series of industrial temperature range DC-DC converters are the standard building blocks for on-board distributed 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 1watt.
1 2 4 5 6
V GND
IN
–V 0V +V
Notice : This is not a final specification. Some parametric limits may be subject to change.
PRELIMINARY
Newport Components
NMA SERIES
1
NMA SERIES
Isolated 1W Dual Output DC-DC Converters
absolute maximum ratings
Short circuit duration1 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 1 second Internal power dissipation · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 450mW Lead temperature 1.5mm from case for 10 seconds · · · · · · · · · · · · · · · · · · · · 300°C Input voltage VIN, NMA05 types · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 7V Input voltage VIN, NMA12 types · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 15V
electrical specifications
Specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
Efficiency Package Style
1 2 1 2
Order Code
Nominal Input Voltage
(V)
Rated Output Voltage
(V) 5 9 12 15 5 9 12 15 5 9 12 15 5 9 12 15
Rated Output Current
(mA) ±100 ±55 ±42 ±33 ±100 ±55 ±42 ±33 ±100 ±55 ±42 ±33 ±100 ±55 ±42 ±33
Input Current at Rated Load
(mA) 289 270 266 263 289 270 266 263 120 113 111 110 120 113 111 110
(%) 69 75 77 78 69 75 77 78 69 74 75 76 69 74 75 76
NMA0505D NMA0509D NMA0512D NMA0515D NMA0505S NMA0509S NMA0512S NMA0515S NMA1205D NMA1209D NMA1212D NMA1215D NMA1205S NMA1209S NMA1212S NMA1215S
5 5 5 5 5 5 5 5 12 12 12 12 12 12 12 12
i ii
When operated without additional external load capacitance, the output voltage of the NMA devices is guaranteed to be within 95% of its steady state value within 100ms after the input voltage has reached 95% of its steady state value,
irrespective of the rise time of the input voltage.
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.
1 Supply voltage must be discontinued at the end of the short circuit duration.
2
Newport Components
Isolation Capacitance
(pF) 28 32 34 36 28 32 34 36 33 46 55 54 33 46 55 54
Isolated 1W Dual Output DC-DC Converters
family characteristics - input
Specifications typical at T =25°C, nominal input voltage and rated output current unless otherwise specified.
NMA SERIES
)
Parameter
Voltage Range Reflected Ripple Current
Conditions
Continuous operation, 5V input types Continuous operation, 12V input types
MIN
4.5 10.8
NOM
5 12 20
MAX
5.5 13.2 33
Units
V mA p-p
family characteristics - output
Specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
Parameter
Rated Power1 Voltage Set point Accuracy Line Regulation
Conditions
TA = –40°C to 120°C See tolerance envelope High VIN to low VIN
10% load to rated load, 5V output types
MIN
TYP
MAX
1
Units
W
1.0 10 9 6.5 6 40 25 25 20
1.2 12.5 10 7.5 7.5 75 50 50 50
%/%
Load Regulation
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 Ripple and Noise BW=DC to 20MHz, 9V output types BW=DC to 20MHz, 12V output types BW=DC to 20MHz, 15V output types
mV p-p
family characteristics - isolation
Specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
Parameter
Isolation Voltage Test Voltage Resistance
Conditions
Flash tested for 1 second 50Hz, 10 seconds Viso=500V
MIN
1000 1000
TYP
MAX
Units
VDC Vpk
10
GΩ
1 See derating curve. Newport Components NMA SERIES
3
NMA SERIES
Isolated 1W Dual Output DC-DC Converters
family characteristics - general
Specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwis.