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

3

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

Ordering Information

Input Volatge

Output Voltage

Output Current

Model Number

Vo1

Vo2

Io1

Io2

36V to 75V

3.3V

1.5V

20A

20A

90%

ALQ20FM48(N) - (6)

36V to 75V

3.3V

1.2V

20A

20A

90%

ALQ20FK48(N) - (6)

36V to 75V

3.3V

1.2V

15A

15A

90%

ALQ15FK48(N) - (6)

OPTIONS:

Enable Function "N" = Negative Logic Enable (default is Positive Logic Enable - no suffix “N”)

Pin Length

“-6” = 3.7mm nominal pin length (default is 5mm nominal - no suffix “6”)

Dual Output

1. +Vin

2. Enable (On/Off)

3. -Vin

5. Secondary Return/Ground

6. Trim

Notes:

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

parallel with 1 uF ceramic capacitor placed output

and secondary return ground.

2. Efficiency measurements taken at full load - balanced

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

4. All specifications subject to change without notice.

Mechanical drawings are for reference only

5. Technical Reference Notes should be consulted for

detailed information when available

6. Warranty 1yr.

This is a Preliminary Data Sheet. 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 A: APRIL12, 2004)

Pin Assignment

Mechanical Outline

Dimensions are in inches [millimeters]

Pin placement tolerance ± 0.005 [0.127]

Mechanical Tolerance ± 0.02 [0.5]