Datasheet NMA2405D, NMA4812S, NMA4815D, NMA4809D, NMA4809S Datasheet (cdtechno)

NMA 24V &48V SERIES

Isolated 1W Dual Output DC-DC Converters

SELECTION GUIDE

Nominal

Input Output Output

Voltage Voltage Current MTTF

Order Code (V) (V) (mA) (%) (pF) kHrs

NMA2405D 24 5 ±100 70 39 194

1

FEATURES

■ Dual Output from a Single Input Rail

■ Industry Standard Pinout

■ Power Sharing on Output

■ 1kVDC Isolation

■ Efficiency to 80%

■ Power Density 0.85W/cm

3

■ 24V & 48V Input

■ 5V, 9V, 12V and 15V Output

■ Footprint from 1.17cm

2

■ UL 94V-0 Package Material

■ No Heatsink Required

■ Internal SMD Construction

■ Toroidal Magnetics

■ Fully Encapsulated

■ No External Components Required

■ Custom Solutions Available

NMA2409D 24 9 ±55 80 50 166

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

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

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

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.

DIP

SIP

DIP

SIP

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.

www.dc-dc.com

INPUT CHARACTERISTICS

Parameter Conditions MIN TYP MAX Units

Voltage Range

Continuous operation, 24V input types 21.6 24 26.4
Continuous operation, 48V input types 43.2 48 52.8

V

OUTPUT CHARACTERISTICS

Parameter Conditions MIN TYP MAX Units

Rated Power2TA= 0°C to 70°C 1 W
Voltage Set

Point Accuracy
Line Regulation High VINto low V

Load Regulation

See tolerance envelope

IN

1.2 %/%
10% load to rated load, 5V output types 15
10% load to rated load, all other output types

10

%

Ripple & Noise BW=DC to 20MHz, all input types 150 mV p-p

ABSOLUTE MAXIMUM RATINGS

Short-circuit duration
Lead temperature 1.5mm from case for 10 seconds 300°C
Input voltage VIN, NMA24 types 28V
Input voltage VIN, NMA48 types 54V

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.

All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.

3

1 second

NMA 24V & 48V SERIES

Isolated 1W Dual Output DC-DC Converters

ISOLATION CHARACTERISTICS

Parameter Conditions MIN TYP MAX Units

Isolation Test Voltage Flash tested for 1 second 1000 VDC
Resistance Viso=500VDC 1 GΩ

GENERAL CHARACTERISTICS

Parameter Conditions MIN TYP MAX Units

Switching Frequency All input types 100 kHz

TEMPERATURE CHARACTERISTICS

Parameter Conditions MIN TYP MAX Units

Specification All output types 0 70 °C
Storage –55 150 °C
Cooling Free air convection

PERFORMANCE CHARACTERISTICS

+10%

+5%

V nominal

tolerance envelope

+2.5%

-2.5%

-7.5%

temperature derating graph

2.0

1.5

1.0

PIN CONNECTIONS

14 Pin DIP

PIN

1 GND
7 NC
8 0V

9 +V
11 –V
14 V

IN

7 Pin SIP

PIN

1 V
2 GND
4 –V
5 0V
6 +V

IN

10 50 100

Output Load Current (%)

MECHANICAL DIMENSIONS

14 Pin DIP

We i g h t : 2.3g (24V)

2.9g (48V)

NMA2405D

9.80

7 Pin SIP

We i g h t : 2.3g (24V)

2.9g (48V)

* 7.70 for 48V variants
**7.50 for 48V variants

All dimensions in mm XX.XX ±0.25mm. All pins on a

2.54mm pitch and within ±0.25mm of true position.

6.00**

19.50

XYYWW

19.50

4.60

3.60

4.60

3.60

6.80*

10.0

0.55

0.45

NMA2405S

XYYWW

1 2 5 64

2.54

0.5

Safe Operating Area

0

–50 0 50 70 100 125 150

Ambient Temperature (°C)

7.62

2.54

1.25

0.55

0.45

15.24 1.092.13

1

2.00

12.70

7

891114

0.55

0.45

0.30

0.20

0.30

0.20

C&D Technologies (NCL) Limited reserve the right to alter or improve the
specification, internal design or manufacturing process at any time, without
notice. Please check with your supplier or visit our web site to ensure that
you have the current and complete specification for your product before use.

© C&D Technologies (NCL) Limited 2001 NDC NMA2.3
No part of this publication may be copied, transmitted or stored in a

retrieval system or reproduced in any way including, but not limited to,
photography, photocopy, magnetic or other recording means, without prior
written permission from C&D Technologies (NCL) Limited.

Instructions for use are available from www.dc-dc.com

C&D Technologies (NCL) Ltd

Tanners Drive, Blakelands North
Milton Keynes MK14 5BU, England
Tel: [phone]
Fax:[phone]
email: [e-mail]

www: http://www.dc-dc.com

C&D Technologies (NCL), Inc.

5816 Creedmoor Road, Raleigh
NC 27612, USA
Tel: [phone]
Fax: [phone]
email: [e-mail]