2.750 (69.85)

1.065 (27.05)

1.375 (34.93)

1-25

26-50

50

34 33

25

18

17

1

26

26-50

1-25

0.125 (3.18)

0.400 (10.16)

0.700 (17.78)

2.586 (65.68)

0.875 (22.23)

R0.080 (R2.03) (2 PLS)

ON CKT BOARD

HEATSINK

0.588 (14.92)

ALL DIMENSIONS IN INCHES (mm)

(See Notes 1 and 2)

Datasheet © Artesyn Technologies® 2005

The information and specifications contained in this datasheet are believed to be correct at time of publication. However, Artesyn Technologies accepts no responsibility for consequences arising

from printing errors or inaccuracies. Specifications are subject to change without notice. No rights under any patent accompany the sale of any such product(s) or information contained herein.

For the most current data and application support visit www.artesyn.com/powergroup/products.htm

NXA66 Series

Single output (Non-Isolated)

DC-DC CONVERTERS 66 W Non-isolated DC-DC Converters

2

Please consult our website for the following items:

www.artesyn.com

PIN CONNECTIONS

PIN NO. ROW A

ROW B

PIN NO.

1

12 Vin

RTN

50

2

12 Vin

RTN

49

3

12 Vin

RTN

48

4

12 Vin

RTN

47

5

12 Vin

RTN

46

6

Reserved

RTN

45

7

VSP

8

PWRGD

Reserved

43

9

OUTEN

Ishare

42

10

Reserved

Reserved

41

11

Vo-sense

Vo-sense rtn

40

12

Vout

Return

39

13

Vout

Return

38

14

Vout

RTN

37

15

Vout

RTN

36

16

Vout

RTN

35

17

Vout

RTN

34

18

Vout

RTN

33

19

Vout

RTN

32

20

Vout

RTN

31

21

Vout

RTN

30

22

Vout

RTN

29

23

Vout

RTN

28

24

Vout

RTN

27

25

Vout

RTN

26

INPUT

NOMINAL OUTPUT

NOMINAL OUTPUT

MINIMUM

MODEL

VOLTAGE

VOLTAGE

CURRENT

EFFICIENCY

12 Vdc

3.3/2.5 Vdc

20 A

86/82%

NXA66-12P3V3CY

Ambient Temperature (

°C)

0

2

4

6

8

10

12

14

16

18

20

10

20

30

40

50

60

70

80

90 100

400 Lfm

300 Lfm

200 Lfm

100 Lfm

Zero Air

File Name: nxa66.pdf Rev (02): 20 Dec 2005

N

No

otte

es

s C

Co

on

nd

d..

4

Initilization level; ESD event shall cause no out-of-regulation conditions.

5

The ‘Y’ suffix indicates that these parts are TSE RoHS 5/6 (non Pb-free)

compliant.

6

NOTICE: Some models do not support all options. Please contact your

local Artesyn representative or use the on-line model number search tool

at http://www.artesyn.com/powergroup/products.htm to find a suitable

alternative.

N

No

otte

es

s

1

In this view, row B of the edge connector is visible. The leftmost pin is pin

50, and the rightmost pin is pin 26. Row A of the connector is on the

opposite side of the unit. Pin 1 is behind pin 50, pin 25 is behind pin 26.

See below for pinout.

2

Recommended mating connector is AMP 145432 or equivalent. Pin 44 is

absent and is used for electrical key. AMP keying plug PN 65025-2 may

be placed in the mating connector between pins 33 and 34, and between

pins 17 and 18. This keying plug serves as a mechanical key.

3

axes.