
LME SERIES 
Isolated 250mW Single Output DC-DC Converters
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
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
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
NDC LME.2
ISOLATION CHARACTERISTICS
Parameter
Isolation Test Voltage
Resistance
PERFORMANCE CHARACTERISTICS
tolerance envelope
+
10%
+5%
GENERAL CHARACTERISTICS
Parameter
Switching Frequency
TEMPERATURE CHARACTERISTICS
Parameter
Specification
Storage
Cooling
PIN CONNECTIONS
8 Pin DIP
PIN
1
GND
4
V
IN
5
+V
7
0V
Conditions
Flash tested for 1 second
Viso=500VDC
MIN
1000
1
TYP
MAX
Units
VDC
G
Conditions
All input types
MIN
TYP
100
MAX
Units
kHz
11.50
9.80
MECHANICAL DIMENSIONS
8 Pin DIP
Conditions
All output types
MIN
0
–55
TYP
MAX
70
150
Units
°C
°C
Free air convection
4 Pin SIP
PIN
1
2
3
4
GND
V
IN
0V
+V
V nominal
+2.5%
-2.5%
-7.5%
10
50
100
Output Load Current (%)
6.80
7.62
7.62
0.25±0.05
0.25±0.05
4.1
5.08
0.50±0.05
11.50
6.00
10.0
1.9 Printed Face
1.25
762
4.1
0.50±0.05
0.50±0.05
All dimensions in mm XX.XX ±0.25mm. All pins on a
2.54mm pitch and within ±0.25mm of true position.
4 Pin SIP
LME0505D
YYWW
LME0505S
YYWW
1
1
7
5
4
2 3 4
temperature derating graph
0.500
0.375
0.250
0.125
0
–40
0
50
70
100 125 150
Ambient Temperature (°C)
Safe Operating Area