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| NME 24V & 48V SERIES Isolated 1W Single Output DC-DC Converters SELECTION GUIDE Nominal Input Voltage Output Voltage Output Current MTTF1 Order Code NME2405D NME2409D NME2412D (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) 200 111 83 66 200 111 83 66 200 111 83 66 200 111 83 66 (%) 70 75 80 80 70 75 80 80 70 75 80 80 70 75 80 80 (pF) 40 59 78 79 40 59 78 79 32 50 76 75 32 50 76 75 kHrs 201 185 163 136 201 185 163 136 213 194 164 140 213 194 164 140 SIP DIP SIP DIP FEATURES s Single Isolated Output s Industry Standard Pinout s 1kVDC Isolation s Efficiency to 80% s Power Density 1.45W/cm 3 s 24V & 48V Input s 5V, 9V, 12V and 15V Output s Footprint from 0.69cm 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 s Pin Compatible with LME s SIP & DIP Package Styles DESCRIPTION The NME Series of DC-DC Converters is particularly suited to isolating and/or converting DC power rails. The galvanic isolation allows the device to be configured to provide an isolated negative rail in systems where only positive rails exist. NME2415D NME2405S NME2409S NME2412S NME2415S NME4805D NME4809D NME4812D NME4815D NME4805S NME4809S NME4812S NME4815S 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 , NME24 types Input voltage V IN , NME48 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. NME 24V & 48V SERIES Isolated 1W Single Output DC-DC Converters ISOLATION CHARACTERISTICS Parameter Conditions MIN TYP MAX Units PIN CONNECTIONS 1000 1 VDC G 8 Pin DIP PIN 1 GND 4 VIN 5 +V 7 0V 4 Pin SIP PIN 1 GND 2 VIN 3 0V 4 +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 Cur rent (%) 100 -50 0 50 70 100 125 150 Ambient Temperature (C) MECHANICAL DIMENSIONS 8 Pin DIP Weight: 1.48g 11.50 1.94 7.62 1.09 NME2405D 9.80 XYYWW 6.80* 7.62 4.60 3.60 0.55 0.45 1 7 4 5 0.30 0.20 4 Pin SIP Weight: 1.30g 11.50 1.94 0.30 0.20 6.00** 10.0 NME2405S XYYWW 1 .25 7 .62 4.60 3.60 1234 0.55 0.45 * 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. 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 NME2.3 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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