NDL SERIES

Isolated 2W Wide Input 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.

3400 E Britannia Drive, Tucson,

Arizona 85706, USA

Tel: +1 (800) 547-2537

Fax: +1 (520) 741-4598

email: sales@cdtechno.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 2002

NDC NDL.4

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

ISOLATION CHARACTERISTICS

GENERAL CHARACTERISTICS

RECOMMENDED TEST CIRCUIT

NDL05 POWER DERATING CURVE

Parameter

Conditions

MIN

TYP

MAX

Units

Isolation Test Voltage

Flash tested for 1 second

1000

VDC

Resistance

Viso=1000VDC

1

G

Ω

Parameter

Conditions

MIN

TYP

MAX

Units

Swiching Frequency

MAX rated load to MIN rated load 100

600

kHz

Control Pin (CTRL)

Control voltage applied via 1k0 resistor,

Input Current

output voltage must reduce to 0V

4.0

6.0

mA

NDL

GND

100µF, 25V

Philips Part No.

13556101

OV

2.5

2.0

1.5

1.0

0.5

0

1.75

4.5 5

6

7

8

9

Input Voltage (V)

21.80

9.20

11.10

4.60

3.60

0.55

0.45

MECHANICAL DIMENSIONS

2.54

3.20

0.30 max

0.20 min

2.01±0.50

NDL4805S

XYYWW

ENVIRONMENTAL

Parameter

Conditions

MIN

TYP

MAX

Units

Operation

-40

85

°C

Storage

-50

130

°C

Cooling

Free air convection

1 2

3

5

6

7

8

PIN

1

GND

2

3

CTRL

5*

IC

6

7

0V

8

Weight: 5.0g

*Pin 5 is internally connected and must have no external connection

All dimensions in mm XX.XX ±0.25mm. All pins on a 2.54mm pitch and

within ±0.25mm of true position.

CTRL (PIN 3)

Provides an on/off function. The converter

is on when CTRL is not connected or high

impedance (Z). The CTRL pin will turn the

converter off as indicated in general

characteristics.

CS (PIN 8)

Additional capacitance, up to 100uF can be

added from CS to pin 7. A low ESR

capacitor if fitted will precede the output filter

inductor and will improve ripple and noise.