Technical Reference Notes
ALD12/18/20/25 Series
(Single Output 16th Brick)
Electrical Specifications
ABSOLUTE MAXIMUM RATINGS
Stresses in excess of the absolute maximum ratings can cause permanent damage to the converter. Functional operation of
the device is converter is not implied at these or any other conditions in excess of those given in the operational section of
the specs. Exposure to absolute maximum ratings for extended period can adversely affect device reliability.
Parameter
Input Voltage1
Continuous
Device
Symbol
Min
Typ
Max
Unit
All
VIN
VIN, trans
-0.3
-
-
-
75
100
Vdc
Transient (100ms)
Isolation Voltage
Input to Output
All
All
All
All
All
1500
-40
-40
10
-
-
-
-
-
-
-
-
-
-
-
-
Vdc
ºC
ºC
%
Vdc
W
W
W
W
W
Operating Temperature
Storage Temperature
Operating Humidity
Max Voltage at Enable Pin
Max Output Power
Ta
TSTG
-
85
125
85
25
60
60
50
45
38
30
-0.6
A (5V0)
F (3V3)
G (2V5)
Y (1V8)
M (1V5)
K (1V2)
-
-
-
-
-
-
W
INPUT SPECIFICATIONS
Parameter
Device
All
All
Symbol
VIN
Min
36
Typ
48
Max
75
Unit
Vdc
Operating Input Voltage Range
Input Under-Voltage Lock-out
T_ON Threshold
34.0
31.0
-
-
-
-
34.8
32.5
-
-
-
-
36.0
33.5
2.4
2.4
1.9
1.6
1.4
1.1
4.1
3.9
3.4
3.4
3.4
2.6
10
Vdc
A
T_OFF Threshold
Input Current1
5V0 (A)
3V3 (F)
2V5 (G)
1V8 (Y)
1V5 (M)
1V2 (K)
5V0 (A)
3V3 (F)
2V5 (G)
1V8 (Y)
1V5 (M)
1V2 (K)
All
IIN-MAX
(VIN = VIN, Min; IO = IO, Max
)
Max Pdiss @ IO = 0A
-
-
-
-
-
-
-
-
W
(VIN = VIN, Nom; TA ≥ 25°C)
Input Ripple Current2
5Hz to 20MHz
Input Voltage Rise Time
10% to 90% of Vout
Inrush Current
II1
-
-
-
-
1
-
mAp-p
V/ms
A2/s
All
All
-
I2/s
1
MODEL: ALD12/18/20/25 SERIES
AUGUST 17, 2005 – REVISION C
SHEET 2 OF 20
ASTEC [ Astec America, Inc ]
