Technical Reference Notes
ALD12/18/20/25 Series
(Single Output 16
th
Brick)
MODEL: ALD12/ 18/20/ 25 SERIES SHEET 3 OF 20
AUGUST 17, 2005 – REVISION C
Electrical Specifications (continued)
OUTPUT SPECIFICATIONS
Parameter Device Symbol Min Typ Max Unit
Output Voltage Set point
V
IN
= V
IN, MIN
to
V
IN,MAX;
I
O
=I
O,Max
5V0 (A)
3V3 (F)
2V5 (G)
1V8 (Y)
1V5 (M)
1V2 (K)
V
O,SET
4.930
3.260
2.465
1.770
1.470
1.180
5.000
3.300
2.500
1.800
1.500
1.200
5.070
3.340
2.535
1.830
1.530
1.220
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Output Regula tion
Line : V
IN
= V
IN, Min
to V
IN, Max
Load: I
O
= I
O, Min
to I
O, Max
Temperature: T
A
= -40 ºC to
+85ºC
All
All
All
-
-
-
-
-
-
0.1
0.1
0.3
0.4
0.4
0.8
%Vo
%Vo
%Vo
Ripple and Noise
3
Peak-to-Peak: (5Hz to 20MHz)
All - - 40 100 mVp-p
Output Current 5V0 (A)
3V3 (F)
2V5 (G)
1V8 (Y)
1V5 (M)
1V2 (K)
I
O
0
0
0
0
0
0
-
-
-
-
-
-
12
18
20
25
25
25
A
External Load Capacitance
Capacitor ESR
All - -
4
-
-
10,000
-
µF
mΩ
Output Current-limit Inception
V
OUT
= 90% V
O,SET
(Autorecovery)
5V0 (A)
3V3 (F)
2V5 (G)
1V8 (Y)
1V5 (M)
1V2 (K)
I
O
13.0
19.5
21.5
26.5
26.5
26.5
-
-
-
-
-
-
19
25
30
34
34
34
A
Over Voltage Range
(Autorecovery)
5V0 (A)
3V3 (F)
2V5 (G)
1V8 (Y)
1V5 (M)
1V2 (K)
5.9
3.9
3.0
2.1
1.8
1.4
6.2
4.1
3.2
2.4
2.1
1.6
6.9
4.9
3.9
2.9
2.5
2.1
V
Over Temperature Range
(AVG. PCB TEMP) - Auto recovery
All 110 - 120
°C
Efficiency
V
IN
= V
IN-NOM
I
O
= I
O,MAX
T
A
=25°C
5V0 (A)
3V3 (F)
2V5 (G)
1V8 (Y)
1V5 (M)
1V2 (K)
η
η
η
η
η
η
90.0
89.0
88.5
87.0
83.5
82.0
91.0
90.0
89.5
88.0
84.5
83.0
94.0
93.0
92.0
90.0
88.0
86.0
%
%
%
%
%
%