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 Efficiency
2
Model Number
Voltage Voltage Current
36V to 75V 5.0V 12A 91% Typ ALD12A48(N) - (6)(S)(L)
36V to 75V 3.3V 18A 90% Typ ALD18F48(N) - (6)(S)(L)
36V to 75V 2.5V 20A 89% Typ ALD20G48(N)- (6)(S)(L)
36V to 75V 1.8V 25A 88% Typ ALD25Y48(N) - (6)(S)(L)
36V to 75V 1.5V 25A 85% Typ ALD25M48(N)- (6)(S)(L)
36V to 75V 1.2V 25A 83% Typ ALD25K48(N) - (6)(S)(L)
NOTES:
Efficiency values taken at nominal input full load condition, 25
o
C ambient temperature.
OPTIONS
(N) : "N" = designates Negatve Logic Enable (default is Positive Enable with no suffix “N” required)
(6) : “-6” = 3.7mm nominal pin length (default is 5mm nominal pin length with no suffix “-6” required)
(S) : “-S” = Surface Mount Termination (default is thru hole termination with no sufix “-S required)
(L) : “L” = RoHS compliant (RoHS 6) / “Blank” - RoHS compliant with Lead (PB) in solder exemption (RoHS 5)
Pin Assignments
ALD25
Single Output
1. + Vin
2. Enable
3. - Vin
4. - Vout
5. - Sense
6. Trim
7. + Sense
8. +Vout
Notes:
1. Measured at 20MHz bandwidth with external 10 µF
tant. capacitor in parallel with 0.1 µF ceramic
capacitor placed across +Vout and -Vout; 33µF e-cap
or equivalent placed across +Vin and -Vin.
2. Efficiency measurements taken at full load, nominal
line and T
A
= 25 °C.
3. All specifications are typical at nominal line, full load
and T
A
= 25 °C unless otherwise noted.
4. Mechanical drawings are for reference only.
Dimensions are in inches [millimeters]. Mechanical
tolerance: ± 0.002[0.5], recommended surface mount
pads: ∅ = 0.11[2.79] ± 0.005 [0.13]; through hole pin
diameter (Pins 4 & 8) ∅ = 0.062 [1.57], others ∅ =
0.04 [1.0] (6X).
5. Technical reference Notes should be consulted for
detailed information when available.
6. All specifications subject to change without notice.
7. Warranty 1 yr.
Astec Industry Standard
Astec reserves the right to make changes to the information
contained herein without notice and assumes no liability as a
result of its use or application. (REV08: MARCH 05, 2006)
Pin 1
Pin 8
TH
Termination
