NMA 24V & 48V SERIES Isolated 1W Dual Output DC-DC Converters SELECTION GUIDE Nominal Input Voltage Output Voltage Order Code (V) (V) (mA) (%) (pF) kHrs NMA2405D 24 5 100 70 39 194 NMA2409D 24 9 55 80 50 166 NMA2412D 24 12 42 80 65 134 NMA2415D 24 15 33 80 95 101 Dual Output from a Single Input Rail NMA2405S 24 5 100 70 39 194 Industry Standard Pinout NMA2409S 24 9 55 80 50 166 Power Sharing on Output NMA2412S 24 12 42 80 65 134 NMA2415S 24 15 33 80 95 101 Power Density 0.85W/cm 3 NMA4805D 48 5 100 70 26 206 24V & 48V Input NMA4809D 48 9 55 80 38 174 NMA4812D 48 12 42 80 52 139 NMA4815D 48 15 33 80 56 104 No Heatsink Required NMA4805S 48 5 100 70 26 206 Internal SMD Construction NMA4809S 48 9 55 80 38 174 NMA4812S 48 12 42 80 52 139 No External Components Required NMA4815S 48 15 33 80 56 104 Custom Solutions Available 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. FEATURES 1kVDC Isolation Efficiency to 80% 5V, 9V, 12V and 15V Output Footprint from 1.17cm 2 UL 94V-0 Package Material Toroidal Magnetics Fully Encapsulated Output Current MTTF1 DIP SIP DIP SIP 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. 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 MIN TYP MAX Units 1 W 1.2 15 10 150 %/% OUTPUT CHARACTERISTICS Parameter Conditions Rated Power2 Voltage Set Point Accuracy Line Regulation TA= 0C to 70C See tolerance envelope 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 % 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 www.dc-dc.com 1 second 300C 28V 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=25C, nominal input voltage and rated output current unless otherwise specified. NMA 24V & 48V SERIES Isolated 1W Dual Output DC-DC Converters ISOLATION CHARACTERISTICS PIN CONNECTIONS Parameter Conditions MIN Isolation Test Voltage Resistance Flash tested for 1 second Viso=500VDC TYP MAX Units 1000 1 14 Pin DIP PIN 1 GND 7 NC 8 0V 9 +V 11 -V 14 VIN VDC G GENERAL CHARACTERISTICS Parameter Conditions Switching Frequency All input types MIN TYP MAX Units 100 kHz 7 Pin SIP PIN 1 VIN 2 GND 4 -V 5 0V 6 +V TEMPERATURE CHARACTERISTICS Parameter Conditions MIN Specification Storage Cooling All output types 0 -55 TYP MAX Units 70 150 C C Free air convection PERFORMANCE CHARACTERISTICS tolerance envelope 2.0 +10% +5% +2.5% V nominal temperature derating graph 1.5 -2.5% 1.0 -7.5% Safe Operating Area 0.5 10 50 Output Load Current (%) 0 100 -50 0 50 70 100 125 150 Ambient Temperature (C) MECHANICAL DIMENSIONS 14 Pin DIP 19.50 Weight: 2.3g (24V) 2.13 NMA2405D 2.9g (48V) 9.80 7 7.62 14 4.60 3.60 0.55 0.45 Weight: 2.3g (24V) 2.9g (48V) 1.09 1 6.80* XYYWW 11 9 NMA2405S 10.0 0.30 0.20 1.25 XYYWW 12.70 * 7.70 for 48V variants **7.50 for 48V variants 4.60 3.60 All dimensions in mm XX.XX 0.25mm. All pins on a 2.54mm pitch and within 0.25mm of true position. 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 1 2 0.30 0.20 0.55 0.45 2.00 6.00** 8 2.54 19.50 7 Pin SIP 15.24 4 5 6 0.55 0.45 2.54 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