NME 24V & 48V SERIES Isolated 1W Single Output DC-DC Converters SELECTION GUIDE Nominal Input Voltage Output Voltage Output Current Order Code (V) (V) (mA) (%) (pF) kHrs NME2405D 24 5 200 70 40 201 NME2409D 24 9 111 75 59 185 NME2412D 24 12 83 80 78 163 NME2415D 24 15 66 80 79 136 ■ Single Isolated Output NME2405S 24 5 200 70 40 201 ■ Industry Standard Pinout NME2409S 24 9 111 75 59 185 ■ 1kVDC Isolation NME2412S 24 12 83 80 78 163 NME2415S 24 15 66 80 79 136 ■ 24V & 48V Input NME4805D 48 5 200 70 32 213 ■ 5V, 9V, 12V and 15V Output NME4809D 48 9 111 75 50 194 NME4812D 48 12 83 80 76 164 NME4815D 48 15 66 80 75 140 ■ Internal SMD Construction NME4805S 48 5 200 70 32 213 ■ Toroidal Magnetics NME4809S 48 9 111 75 50 194 NME4812S 48 12 83 80 76 164 ■ Custom Solutions Available NME4815S 48 15 66 80 75 140 ■ Pin Compatible with LME 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 ■ Efficiency to 80% ■ Power Density 1.45W/cm 3 ■ Footprint from 0.69cm 2 ■ UL 94V-0 Package Material ■ No Heatsink Required ■ Fully Encapsulated ■ No External Components Required ■ SIP & DIP Package Styles MTTF1 DIP SIP DIP SIP DESCRIPTION INPUT CHARACTERISTICS 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. 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= 0°C to 70°C 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 , NME24 types Input voltage V IN , NME48 types www.dc-dc.com 1 second 300°C 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=25°C, nominal input voltage and rated output current unless otherwise specified. NME 24V & 48V SERIES Isolated 1W Single 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 8 Pin DIP PIN 1 GND 4 VIN 5 +V 7 0V VDC GΩ GENERAL CHARACTERISTICS Parameter Conditions Switching Frequency All input types MIN TYP MAX Units 100 4 Pin SIP PIN 1 GND 2 VIN 3 0V 4 +V kHz 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% 0.5 10 50 Output Load Cur rent (%) Safe Operating Area 0 100 –50 0 50 70 100 125 150 Ambient Temperature (°C) MECHANICAL DIMENSIONS 8 Pin DIP 11.50 Weight: 1.48g NME2405D 9.80 XYYWW 1.94 7.62 1 6.80* 1.09 4 7.62 7 4.60 3.60 5 0.30 0.20 0.55 0.45 11.50 4 Pin SIP 1.94 Weight: 1.30g NME2405S 6.00** 10.0 XYYWW 0.30 0.20 1.25 7.62 4.60 3.60 * 7.70 for 48V variants **7.50 for 48V variants 1 2 3 4 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&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: [email protected] www: http://www.dc-dc.com 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), Inc. 5816 Creedmoor Road, Raleigh NC 27612, USA Tel: +1 (919) 571-9405 Fax: +1 (919) 571-9262 email: [email protected]