ADDC02803SC/ADDC02805SA–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
(TC = +25؇C, VIN = 28 V dc ؎ 0.5 V dc, unless otherwise noted; full temperature range is
–55؇C to +90؇C; all temperatures are case and TC is the temperature measured at the center of the package bottom.)
Case
Test
ADDC02803SC
Min Typ Max Min Typ
ADDC02805SA
Max Units
Parameter
Temp Level Conditions
INPUT CHARACTERISTICS
Steady State Operating Input Voltage Range1 Full
Abnormal Operating Input Voltage Range
VI
IO = 2 A to 20 A
IO = 2 A to 16 A
18
28 40
18
28
40
50
V
(Per MIL-STD-704D)1
Input Overvoltage Shutdown
No Load Input Current
Disabled Input Current
Full
VI
I
I
16
50
50
52.5 55
90
16
50
V
V
mA
mA
+25°C
+25°C
Full
52.5 55
90
0.85 2.0
VI
0.85 2.0
OUTPUT CHARACTERISTICS2, 3
Output Voltage (VO)
+25°C
Full
Full
+25°C
+25°C
+25°C
Full
+25°C
+25°C
+25°C
I
IO = 2 A to 20 A, VIN = 18 V to 40 V dc
IO = 2 A to 20 A, VIN = 18 V to 40 V dc
IO = 2 A to 16 A, VIN = 16 V to 50 V dc
IO = 20 A, VIN = 18 V to 40 V dc
VIN = 28 V dc, IO = 2 A to 20 A
IO = 20 A, 5 kHz – 2 MHz BW
VIN = 18 V to 40 V dc
3.26 3.30 3.34 5.00 5.025 5.05
V
V
V
mV
mV
mV p-p
A
% VO Nom
% IO max
A
VI
VI
V
V
I
VI
V
V
I
3.2
3.2
3.4
3.4
4.925
4.925
5.125
5.125
Line Regulation
Load Regulation
1
1
1
1
Output Ripple/Noise4
Output Current (IO)
Output Overvoltage Protection
Output Current Limit
Output Short Circuit Current
15 35
21.2
15
50
20
2
2
IO = 20 A, Open Remote Sense Connection
VO = 90% VOUT Nom
145
125
130
39
35
ISOLATION CHARACTERISTICS
Isolation Resistance
+25°C
I
Input to Output or Any Pin to Case at 500 V dc
100
100
MΩ
DYNAMIC CHARACTERISTICS4
Output Voltage Deviation Due to
Step Change in Load
+25°C
V
V
IO = 10 A to 20 A or 20 A to 10 A di/dt = 0.5 A/µs
IO = 10 A to 20 A or 20 A to 10 A, di/dt = 0.5 A/µs,
Time for VOUT to Return within 2% of Final Value
IO = 20 A, From Inhibit High to Status High
350
135
500
125
mV
µs
Response Time Due to Step Change in Load +25°C
Soft Start Turn-On Time5
+25°C
I
1
4
7
20
ms
THERMAL CHARACTERISTICS
Efficiency
+25°C
Max
Min
+25°C
Max
Min
I
IO = 12 A
IO = 12 A
IO = 12 A
IO = 20 A
IO = 20 A
IO = 20 A
IO = 20 A
75
75
72
74
74
73
79
77
77
75
77
77
75
80
%
%
%
%
%
%
°C
VI
VI
I
VI
VI
V
77
79
Hottest Junction Temperature6
+90°C
110
110
CONTROL CHARACTERISTICS
Clock Frequency
ADJUST (Pin 3) V ADJ
STATUS (Pin 4)
VOH
Full
+25°C
VI
I
IO = 2 A
0.85
0.99 0.85
0.99 MHz
1.26 1.32 1.38 1.92 2.04 2.10
V
+25°C
+25°C
I
I
IOH = 400 µA
IOL = 1 mA
2.4 4.0
0.15 0.7
2.4
4.0
V
V
VOL
0.15 0.7
VAUX (Pin 5)
VO (nom)
INHIBIT (Pin 6)
VIL
+25°C
I
IAUX = 5 mA, Load Current = 20 A
VIL = 0.5 V
13.2 13.7 14.2 14.3 14.7 15.3
V
+25°C
+25°C
+25°C
I
I
I
0.5
1.2
15
0.5
1.2
15
V
mA
V
IIL
VI (Open Circuit)
SYNC (Pin 7)7
VIH
+25°C
+25°C
+25°C
+25°C
I
I
I
V
4.0
4.0
V
µA
V
IIH
VIH = 7.0 V
IO = 20 A
175
175
ISHARE (Pin 8)
TEMP (Pin 9)
2.62 2.72 2.82 2.75 2.82 2.95
3.90 3.90
V
NOTES
150 V dc upper limit rated for transient condition of up to 50 ms. 16 V dc lower limit rated for continuous operation during emergency condition. Steady state and
abnormal input voltage range require source impedance sufficient to insure input stability at low line. See sections entitled System Instability Considerations and Input
Voltage Range.
2Measured at the remote sense points.
3Unit regulates output voltage to zero load.
4CLOAD = 0.
5Output is fully loaded into a constant resistive load.
6Refer to section entitled Thermal Characteristics for more information.
7Unit has internal pull-down; refer to section entitled Pin 7 (SYNC).
Specifications subject to change without notice.
–2–
REV. A
ADI [ ADI ]
