KA78XX/KA78XXA
Electrical Characteristics (KA7808/KA7808R)
(Refer to test circuit ,0
°
C < T
J
< 125
°
C, I
O
= 500mA, V
I
=14V, C
I
= 0.33µF, C
O
=0.1µF, unless otherwise specified)
Parameter
Symbol
T
J
=+25
o
C
Output Voltage
V
O
5.0mA
≤
I
O
≤
1.0A, P
O
≤
15W
V
I
= 10.5V to 23V
T
J
=+25
o
C
V
I
= 10.5V to 25V
V
I
= 11.5V to 17V
I
O
= 5.0mA to 1.5A
Load Regulation (Note1)
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
Regload
I
Q
∆I
Q
∆V
O
/∆T
V
N
RR
V
Drop
r
O
I
SC
I
PK
T
J
=+25
o
C
T
J
=+25
o
C
I
O
= 5mA to 1.0A
V
I
= 10.5A to 25V
I
O
= 5mA
f = 10Hz to 100KHz, T
A
=+25
o
C
f = 120Hz, V
I
= 11.5V to 21.5V
I
O
= 1A, T
J
=+25
o
C
f = 1KHz
V
I
= 35V, T
A
=+25
o
C
T
J
=+25
o
C
I
O
= 250mA to
750mA
Conditions
KA7808
Min.
7.7
7.6
-
-
-
-
-
-
-
-
-
56
-
-
-
-
Typ.
8.0
8.0
5.0
2.0
10
5.0
5.0
0.05
0.5
-0.8
52
73
2
17
230
2.2
Max.
8.3
8.4
160
80
160
80
8.0
0.5
1.0
-
-
-
-
-
-
-
mV
mA
mA
mV/
o
C
µV/Vo
dB
V
mΩ
mA
A
V
mV
Unit
Line Regulation (Note1)
Regline
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
4
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
