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80Amps
AEH80
Total Power:
Input Voltages:
No. of Outputs:
144 Watts (1.8V@80Amps)
48 V
Single
ALH80 (Open Frame)
Ultra High Efficiency
PRELIMINARY
Electrical Specs
Input
Input range
Input Surge
Efficiency
36-75 VDC
100V / 100ms
87%@1.8V (Typical)
Control
Enable
TTL compatible
(positive & negative enable
options)
Output
Regulation
(Line, Load, Temp)
<2%
Special Features
• Ultra High efficiency, 1.8V@87% (Typical)
• Open Frame (ALH80) and Baseplate (AEH80)
• Redundant In-line Output Pins Option
• Positive and Negative enable function
• Low output ripple and noise
• High capacitive load limit on start-up
• Remote sense compensation
• Regulation to zero load
• Fixed frequency switching (200 kHz)
Ripple and noise
Remote sense
Output voltage
adjust range
Transient Response
Overvoltage Protection
50mV p-p typical
Up to 10%Vout
+/-10% of nominal output
4% deviation with
50% to 75% step load
300 µs recovery
130% nominal output
Environmental
Operating temperature
-40°C to +100°C Baseplate (AEH80)
-40°C to +85°C Ambient Air (ALH80)
Storage temperature: -55°C to +125°C
Overtemperature protection: 115°C PCB
Temperature (Typical)
MTBF: >1 million hours
Safety
UL, CUL 60950 Recognized (Pending)
TUV EN60950 Licensed (Pending)
2 North America (USA): 1-888-41-ASTEC Europe (UK): 44 (1384) 842-211Asia (HK): 852-2437-9662

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AMERICAS
5810 Van Allen Way
Carlsbad, CA 92008
Telephone: 760-930-4600
Facsimile: 760-930-0698
EUROPE
Astec House, Waterfront Business Park
Merry Hill, Dudley
West Midlands, DY5 1LX, UK
Telephone: 44 (1384) 842-211
Facsimile: 44 (1384) 843-355
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
Voltage
Output
Voltage
Efficiency
Model Number
48V
1.8V @ 80A
87% (Typ)*
AEH80Y48
48V
1.5V @ 80A
85% (Typ)
AEH80M48
48V
1.2V @ 80A
83% (Typ)
AEH80K48
48V
1.8V @ 80A
87% (Typ)
ALH80Y48
48V
1.5V @ 80A
85% (Typ)
ALH80M48
48V
1.2V @ 80A
83% (Typ)
ALH80K48
* Typical Efficiency measured at nominal input voltage at an ambient temperature of Ta = 25°C.
OPTIONS: suffix “N” = for Negative Enable (default is Positive Enable without Suffix “N”)
suffix “-3” = Standard half brick pinout with Pins 6 and 10 removed
Pin Assignments
Single Output
1. +Vin
2. Enable (on/off)
3. Case
4. -Vin
5. +Output
6. +Output (optional pin)
7. + Sense
8. Trim
9. - Sense
10. -Output (optional pin)
11. -Output
Notes:
1. 20 mHz bandwidth. External 10 uF tant. capacitor + 0.1 uF
cer. capacitor placed from +V out to -V out.
2. Requires a 2.2 mf, 100V film capacitor connected between +V
in and -V in to meet FCC class A and ETS300-386-1 require-
ments for conducted noise. Consult Factory for filtering
information to meet FCC class B, VDE or EIC specifications.
3. All specifications are typical at nominal line, full load, and 25°C
unless otherwise noted.
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. Aastec 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 (FEBRUARY 13, 2003)
0.20 [5.1]
-Output
2.30 [58.4]
1.90 [48.3]
- Vin
2.37 [60.3]
2.00 [50.8]
0.42 [10.6]
0.23 [5.9]
0.08Ø[2.0Ø] 4 PLACES
0.04Ø [1.0Ø] 7 PLACES
+ Output
+ Vin
PIN SIDE DOWN
0.50 [12.7]
0.70 [17.8]
0.90 [22.9]
1.20 [30.5]
1.50 [38.1]
11
10
1.70 [43.2]
1.90 [48.3]
9
8
7
6
5
1
2
3
4
0.20 [5.1]
PIN SIDE UP
0.20 [5.1]
1.90 [48.3]
SIDE VIEW
0.50 [12.7]
0.90 [22.8]
1.50 [38.1]
1.90 [48.3]
PIN ASSIGNMENT
1 + Vin
2 Enable (On/Off)
3 CASE
4 - Vin
5-6 -Output
7 -Sense
8 Trim
9 + Sense
10-11 + Output
NOTES:
ALL DIMENSIONS ARE IN INCHES (MILLIMETERS)
PIN PLACEMENT TOLERANCE : ± 0.005(0.127)
MECHANICAL TOLERANCE ± .002(0.5)
M3 X0.5 MOUNTING HOLE
4 PLACES
0.50 [12.7]
0.20 [5.1]
0.20 [5.1]
+ Vin
+ Output
0.08Ø[2.0Ø] 4 PLACES
2.00 [50.8] 2.40 [61.0]
0.04Ø [1.0Ø] 7 PLACES
- Vin -Output
PIN SIDE DOWN
0.50 [12.7]
0.70 [17.7]
0.90 [22.9]
1.20 [30.5]
1.50 [38.1]
11
10
1.70 [43.1]
9
1.90 [48.3]
8
7
6
5
1
2
3
4
0.20 [5.1]
1.90 [48.3]
PIN SIDE UP
inches [mm]
0.50 [12.7]
0.90 [22.8]
1.50 [38.1]
1.90 [48.3]
0.47
[11.9]
SIDE VIEW
PIN ASSIGNMENT
1 + Vin
2 Enable (On/Off)
3 CASE
4 - Vin
5-6 -Output
7 -Sense
8 Trim
9 + Sense
10-11 + Output
NOTES:
ALL DIMENSIONS ARE IN INCHES (MILLIMETERS)
PIN PLACEMENT TOLERANCE : ± 0.005(0.127)
MECHANICAL TOLERANCE ± .002(0.5)
RECOMMENDEDSCREWTORQUE SETTINGFORMOUNTING
INTO CUSTOMER BOARD MUST BE 5-6 LB/IN
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