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| NMA 24V & 48V SERIES Isolated 1W Dual Output DC-DC Converters SELECTION GUIDE Nominal Input Voltage Output Voltage Output Current MTTF1 Order Code NMA2405D NMA2409D NMA2412D (V) 24 24 24 24 24 24 24 24 48 48 48 48 48 48 48 48 (V) 5 9 12 15 5 9 12 15 5 9 12 15 5 9 12 15 (mA) 100 55 42 33 100 55 42 33 100 55 42 33 100 55 42 33 (%) 70 80 80 80 70 80 80 80 70 80 80 80 70 80 80 80 (pF) 39 50 65 95 39 50 65 95 26 38 52 56 26 38 52 56 kHrs 194 166 134 101 194 166 134 101 206 174 139 104 206 174 139 104 SIP DIP SIP DIP FEATURES s Dual Output from a Single Input Rail s Industry Standard Pinout s Power Sharing on Output s 1kVDC Isolation s Efficiency to 80% s Power Density 0.85W/cm 3 s 24V & 48V Input s 5V, 9V, 12V and 15V Output s Footprint from 1.17cm 2 s UL 94V-0 Package Material s No Heatsink Required s Internal SMD Construction s Toroidal Magnetics s Fully Encapsulated s No External Components Required s Custom Solutions Available DESCRIPTION The NMA series of DC-DC converters are the standard building blocks for on-boar d 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. NMA2415D NMA2405S NMA2409S NMA2412S NMA2415S NMA4805D NMA4809D NMA4812D NMA4815D NMA4805S NMA4809S NMA4812S NMA4815S 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 Continuous operation, 48V input types 21.6 43.2 24 48 26.4 52.8 V OUTPUT CHARACTERISTICS Parameter Conditions MIN TYP MAX Units High V IN to low V IN 10% load to rated load, 5V output types Load Regulation 10% load to rated load, all other output types Ripple & Noise BW=DC to 20MHz, all input types Rated Power2 Voltage Set Point Accuracy Line Regulation TA= 0C to 70C See tolerance envelope 1 W 1.2 15 10 150 %/% % mV p-p ABSOLUTE MAXIMUM RATINGS Short-circuit duration 3 Lead temperature 1.5mm from case for 10 seconds Input voltage V IN , NMA24 types Input voltage V IN , NMA48 types 1 second 300C 28V 54V www.dc-dc.com 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=25C, nominal input voltage and rated output current unless otherwise specified. NMA 24V & 48V SERIES Isolated 1W Dual Output DC-DC Converters ISOLATION CHARACTERISTICS Parameter Conditions MIN TYP MAX Units PIN CONNECTIONS 1000 1 VDC G 14 Pin DIP PIN 1 GND 7 NC 8 0V 9 +V 11 -V 14 VIN 7 Pin SIP PIN 1 VIN 2 GND 4 -V 5 0V 6 +V Isolation Test Voltage Resistance Flash tested for 1 second Viso=500VDC GENERAL CHARACTERISTICS Parameter Conditions MIN TYP MAX Units Switching Frequency All input types 100 kHz TEMPERATURE CHARACTERISTICS Parameter Conditions MIN TYP MAX Units Specification Storage Cooling All output types Free air convection 0 -55 70 150 C C PERFORMANCE CHARACTERISTICS tolerance envelope +10% +5% V nominal 2.0 +2.5% -2.5% -7.5% 1.0 0.5 0 1.5 temperature derating graph Safe Operating Area 10 50 Output Load Current (%) 100 -50 0 50 70 100 125 150 Ambient Temperature (C) MECHANICAL DIMENSIONS 14 Pin DIP Weight: 2.3g (24V) 2.9g (48V) 19.50 2.13 15.24 1.09 NMA2405D 9.80 6.80* 7.62 4.60 3.60 0.55 0.45 2.54 1 7 0.30 0.20 XYYWW 14 1 1 9 8 7 Pin SIP Weight: 2.3g (24V) 2.9g (48V) 19.50 2.00 0.55 0.45 0.30 0.20 12.70 6.00** 10.0 NMA2405S XYYWW 1.25 * 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. 4.60 3.60 12 4 2.54 5 6 0.55 0.45 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) 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: +44 (0)1908 615232 Fax:+44 (0)1908 617545 email: info@cdtechno-ncl.com www: http://www.dc-dc.com C&D Technologies (NCL), Inc. 5816 Creedmoor Road, Raleigh NC 27612, USA Tel: +1 (919) 571-9405 Fax: +1 (919) 571-9262 email: info@us.cdtechno-ncl.com |
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