EUROPE

Astec House, Waterfront Business Park

Merry Hill, Dudley

West Midlands, DY5 1LX, UK

Telephone: 44 (1384) 842-211

Facsimile: 44 (1384) 843-355

AMERICAS

5810 Van Allen Way

Carlsbad, CA 92008

Telephone: 760-930-4600

Facsimile: 760-930-0698

2

Ordering Information

www.astecpower.com

ASIA

Units 2111-2116, Level 21

Tower1, Metroplaza

223, Hing Fong Road

Fwai Fong, New Territories

Hong Kong

Telephone: 852-2437-9662

Facsimile: 852-2402-4426

Input

Output

Output

Model Number

Voltage

Voltage

Current

36V to 75V

3.3V

40A

91% Typ

ALQ40F48 (N)

36V to 75V

2.5V

50A

90% Typ

ALQ50G48(N)

36V to 75V

1.8V

50A

89% Typ

ALQ50Y48 (N)

36V to 75V

1.2V

50A

86% Typ

ALQ50K48 (N)

OPTIONS:

(N)

:

"N" = designates Negative Logic Enable (default is Positive Enable with no suffix “N” required)

2.30

[58.4]

1.48

[37.6]

[1.0Ø] 6 PLACES

[1.5Ø] 2 PLACES

0.04Ø

0.36

[9.1]

PIN SIDEDOWN

SIDEVIEW

0.06Ø

0.24

MAX

[6.0]

[5.0]

0.20

MIN

1

2

3

4

5

6

7

8

Pin Assignments

Single Output

1.

+Vin

2.

Enable (On/Off)

3.

-Vin

4.

-Vout

5.

-Sense

6.

Trim

7.

+Sense

8.

+Vout

Notes:

1. 20 MHz bandwidth. External 10 uF tant. capacitor in

parallel with 1 uF ceramic capacitor placed across

the output and secondary return ground.

2. Efficiency measurements are typical values taken at

3. All specifications are typical at nominal line, full load

4. All specifications subject to change without notice.

5. Mechanical drawings are for reference only.

Dimensions are in inches [millimeters]. Pin

placement tolerance ± 0.005 [0.127]. Mechanical

Tolerance ± 0.02 [0.5].

∅ = 0.060” for Pins 4&8, the

rest are

∅ = 0.40”.

6. Technical Reference Notes should be consulted for

detailed information when available.

7. Warranty 1yr.

Astec reserves the right to make changes to the information

contained herein without notice and assumes no liability as a

result of its use and application. (REV 07: OCTOBER 19, 2004)

PIN SIDEDOWN

1.04

[26.4]

0.44

[11.2]

0.15

[3.8]

L

C

0.74

[18.8]

1.04

[26.5]

0.89

[22.7]

0.74

[18.9]

0.59

[15.0]

2.00

[50.8]

0.44

[11.2]

PIN SIDE UP