SELECTION GUIDE

FEATURES

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Dual Output from a Single Input Rail

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Industry Standard Pinout

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Power Sharing on Output

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1kVDC Isolation

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Efficiency to 80%

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24V & 48V Input

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5V, 9V, 12V and 15V Output

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UL 94V-0 Package Material

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No Heatsink Required

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Internal SMD Construction

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Toroidal Magnetics

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Fully Encapsulated

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No External Components Required

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Custom Solutions Available

DESCRIPTION

The NMA series of DC-DC converters are the

standard building blocks for on-board

distributed power systems. They are ideally

suited to 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.

Nominal

Input

Output

Output

Voltage

Voltage

Current

Order Code

(V)

(V)

(mA)

(%)

(pF)

kHrs

NMA2405D

24

5

±100

70

39

194

NMA2409D

24

9

±55

80

50

166

DIP

NMA2412D

24

12

±42

80

65

134

NMA2415D

24

15

±33

80

95

101

NMA2405S

24

5

±100

70

39

194

NMA2409S

24

9

±55

80

50

166

SIP

NMA2412S

24

12

±42

80

65

134

NMA2415S

24

15

±33

80

95

101

NMA4805D

48

5

±100

70

26

206

NMA4809D

48

9

±55

80

38

174

DIP

NMA4812D

48

12

±42

80

52

139

NMA4815D

48

15

±33

80

56

104

NMA4805S

48

5

±100

70

26

206

NMA4809S

48

9

±55

80

38

174

SIP

NMA4812S

48

12

±42

80

52

139

NMA4815S

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.

Parameter

Conditions

MIN

TYP

MAX

Units

Continuous operation, 24V input types

21.6

24

26.4

Voltage Range

Continuous operation, 48V input types

43.2

48

52.8

V

Parameter

Conditions

MIN

TYP

MAX

Units

1

W

Voltage Set

Point Accuracy

See tolerance envelope

Line Regulation High V

1.2

%/%

10% load to rated load, 5V output types

15

Load Regulation

10% load to rated load, all other output types

10

%

Ripple & Noise BW=DC to 20MHz, all input types

150

mV p-p

1 second

Lead temperature 1.5mm from case for 10 seconds

300°C

28V

54V

INPUT CHARACTERISTICS

OUTPUT CHARACTERISTICS

ABSOLUTE MAXIMUM RATINGS

1 Calculated using MIL-HDBK-217F with nominal input voltage at full load.

2 See derating curve

3 Supply voltage must be discontinued at the end of the short circuit duration.

NMA 24V & 48V SERIES

Isolated 1W Dual Output DC-DC Converters

www.dc-dc.com