Total Power:100W(5V,12V);62.5W(2.5V);82.5W(3.3V)
Input Voltage :48V
No.of Outputs:Single output
Input
Input Range
36 to 75 VDC
Input Surge
100V /100ms
Efficiency (Typ)
90% (5V,12V);
88%(2.5V);89.5%(3V)
Output
Voltage Tolerance
(line, load, temp)
<1.9%
High efficiency(Typ) :90% (5V,12V);
Ripple&Noise 120mV
Max.
88%(2.5V); 89.5%(3V)
Transient Response
-40C to +70C Ambient Air Operation
Industry standard package
2.28" x 1.45" x 0.5"(baseplated)
2.28" x1.45"x 0.4"(open frame)
Overvoltage Protection
(Hiccup)
3V to 3.8V(2.5V)
High capacitive load limit on start-up
3.9V to 5V(3.3V)
14.4V to 18V(12V)
Basic insulation
Current Limit(Hiccup)
>22A (5V)
Regulation to zero load
>9.2A(12V)
>27A(2.5V,3.3V)
Overtemperature Protection Auto-recovery
Ambient air operating temperature range:
Switching Frequency
300k
-40C to +70C
Overtemperature protection: 115C typ
Control
MTBF: > 2 million hours
Trim range(%)
80 to 110
Enable
Positive & negative enable options
Thermal Derating
UL,CSA,EN
1 North America (USA): 1-888-41-ASTEC Europe(UK): 44 (1384) 842-211 Asia (HK): 852-2437-9662
(di/dt =1A/s,output cap = 1000F aluminium
electrolyte)
The module can deliver up to full power at 55C ambient, Vin: 48V,with
200LFM forced air(output to input).
Ast
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25 Amps,20 Amps,8.33 Amps
Environmental
High Efficiency Quarter Brick
Special Features
ALQ25 Series
Safety
Electrical Specs
Load change 25% of Io max from 50%Io max
,<200mv,<400s
6V to 7.5V (5V)
AMERICAS
EUROPE
ASIA
5810 Van Allen Way
Astec House, Waterfront
Units 2111-2116, Level 21
Carlsbad, CA 92008
Business Park
Merry Hill, Dudley
Tower1, Metroplaza
Telephone: 760-930-4600
West Midlands, DY5 1LX, UK
223, Hing Fong Road
Facsimile: 760-930-0698
Telephone: 44 (1384) 842-211
Fwai Fong, New Territories
Facsimile: 44 (1384) 843-355
Hong Kong
Telephone: 852-2437-9662
Facsimile: 852-2402-4426
48V 2.5V 25A 88% Typ ALQ25G48N,AEQ25G48N
48V 3.3V 25A 89.5% Typ ALQ25F48N,AEQ25F48N
48V 12V 8.33A 90% Typ ALQ08B48N,AEQ08B48N
NOTES: "N" = Negative logic enable (without "N" = Positive logic enable)
Single Output
1. +Vin
2. Enable (On/Off)
3. -Vin
4. + Output
5. +Sense
6. Trim
7. -Sense
8.-Output
Open frame
Baseplated (for 12V)
Device code suffix
Length
-4
4.8mm
!
0.5mm
-6
3.8mm
!
0.5mm
-8
2.8mm
!
0.25mm
None
5.8mm
!
0.5mm
Notes:
1. All specifications subject to change without notice. Mechanical
drawings are for reference only.
2. Technical Reference Notes should be consulted for detailed
information when available.
REV 1: Auguest 2005
2
www.astecpower.com
Open frame
Tolerance: X.Xmm
!
0.5mm; X.XXmm
!
0.25mm
Baseplated (for 2.5V, 3.3V and 5V)
AL
Q
25 Series
Input Voltage Output Voltage Output Current Efficiency Model Number
Pin Assignments
Ordering Information
48V 5V 20A 90% Typ ALQ20A48N,AEQ20A48N
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