78253 SERIES
MAX253 Compatible Converter Transformers
MECHANICAL DIMENSIONS
6 Pin DIP
9.52 max
Top View
Primary
Secondary
6 Pin SM
12.70
9.52 max
Top View
Primary
Secondary
1
8.89 max
2
3
6
5
4
8.89 max
1
2
3
6
5
4
78253
35
78250M
XYYWW
6.35
XYYWW
6.35
3.44±0.50
0.30
0.20
10.16
2.54
0.63
0.53
0.30
0.20
0.90
2.54
0.63
0.53
All dimensions in mm XX.XX ±0.25mm. All pins on a 2.54mm pitch and within ±0.25mm of true position.
TYPICAL CHARACTERISTICS (VOLTAGE CURVES)
VOLTAGE CURVES
10
8
6
4
2
0
0
20
40 60 80 100 120
Output Current (mA)
FS=Low
FS=High
78253/35(M)
10
8
6
4
2
0
0
100
200
300
Output Current (mA)
400
78253/55(M)
FS=Low/High
10
8
6
4
2
0
0
20
40
60
80
Output Current (mA)
100
FS=High
FS=Low
78253/35(M)V
10
8
6
4
2
0
0
100
200
300
Output Current (mA)
400
FS=High
FS=Low
78253/55(M)V
EFFICIENCY CURVES
100
80
60
40
20
0
0
20
40 60 80 100 120
Output Current (mA)
78253/35(M)
FS=High
FS=Low
100
80
60
40
20
0
0
100
200
300
Output Current (mA)
400
FS=Low/High
78253/55(M)
100
80
60
40
20
0
0
20
40
60
80
Output Current (mA)
100
FS=Low
78253/35(M)V
FS=High
100
80
60
40
20
0
0
100
200
300
Output Current (mA)
400
FS=High
78253/55(M)V
FS=Low
VOLTAGE DEVIATION
110
105
100
95
90
110
110
110
78253/35(M)
FS=High
78253/55(M)
105
100
FS=High
FS=Low
105
100
95
90
78253/35(M)V
FS=High
78253/55(M)V
1
05
FS=Low
FS=Low
100
FS=Low
FS=High
95
90
95
90
-50
-25
0
25 50 75 100
Temperature (°C)
-50
-25
0
25 50 75 100
Temperature (°C)
-50
-25
0
25 50 75 100
Temperature (°C)
-50
-25
0
25 50 75 100
Temperature (°C)
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 2000
NMP 78253.2
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.
8917 Glenwood Avenue, Raleigh
NC 27612, USA
Tel: +1 (919) 571-9405
Fax: +1 (919) 571-9262
email: info@us.cdtechno-ncl.com
CANDD [ C&D TECHNOLOGIES ]
