EUROPE
ASIA
AMERICAS
Astec House, Waterfront Business Park
Merry Hill, Dudley
Units 2111-2116, Level 21
Tower1, Metroplaza
5810 Van Allen Way
Carlsbad, CA 92008
West Midlands, DY5 1LX, UK
Telephone: 44 (1384) 842-211
Facsimile: 44 (1384) 843-355
223, Hing Fong Road
Fwai Fong, New Territories
Hong Kong
Telephone: 760-930-4600
Facsimile: 760-930-0698
Telephone: 852-2437-9662
Facsimile: 852-2402-4426
Ordering Information
Input
Output 1
Output 2
Model Number
Voltage
Voltage / Current
Voltage / Current
36-75V
5.0V @ 20A
3.3V @ 25A
ALH25AF48N
Note:
Enable function
“N” = negative logic enable (without “N” = positive enable)
1. Maximum output power not to exceed 100W total for 5/3.3V version 20/25A).
2. Any output loading ratio within the maximum specified limits is possible.
Pin Assignments
4-
φ1.5 (0.06)
Dual Outputs
only +Vo and -Vo pins
1. -Vin
2. Not present on this converter
3. Control (on/off)
10.2 (0.4)
61.0 (2.4)
4. +Vin
+Vo2
-Vo2
-Vin
5. +Vo2
6. -Vo2
7. TRM2
8. +Vo1
7.62 (0.3)
7.62 (0.3)
Trim2
25.4 (1.0)
9. -Vo1
10. TRM1
10.16 (0.4)
+Vo1
-Vo1
CNT
Notes:
7.62 (0.3)
7.62 (0.3)
10.16 (0.4)
1. 20 MHz bandwidth. An external 2.20mF ceramic capacitor is
recommended to be placed from +Vout to -Vout.
+Vin
5-
except Vo pins
Trim1
2. Recommended external components below:
12.70 (0.5)
φ1.0 (0.04)
C1 = 100uF/100V, C2 =C4= metallic film, 47uF/50V
C3=C5= Electrolytic 1000uF/10V, C6= .01uF/1500V
3. All specifications are typical at nominal line, full load, and 25°C
unless otherwise noted.
4.8 (0.19)
48.26 (1.9)
4. All specifications subject to change without notice. Mechanical
drawings are for reference only
57.9 (2.28)
5. Please refer to the Technical Reference Notes for more
information.
6. Warranty: 1yr
12.7 (0.5)
5.8(0.23)*
Rev02
Revision date: 20040929
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2
ASTEC [ Astec America, Inc ]
