Electrical Characteristics (KA7808E / KA7808ER)
Refer to test circuit, -40°C < TJ < 125°C, IO = 500 mA, VI = 14 V, CI = 0.33 μF, CO = 0.1 μF, unless otherwise specified.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
TJ = +25°C
7.7
8.0
8.3
VO
Output Voltage
V
5.0 mA ≤ IO ≤ 1.0 A, PO ≤ 15 W,
VI = 10.5 V to 23 V
7.6
8.0
8.4
VI = 10.5 V to 25 V
TJ = +25°C
5
2
160
80
Regline
Line Regulation(7)
mV
VI = 11.5 V to 17 V
IO = 5.0 mA to 1.5 A
TJ = +25°C
10
5
160
80
Regload
IQ
Load Regulation(7)
Quiescent Current
mV
mA
mA
IO = 250 mA to 750 mA
TJ = +25°C
5
8
I
O = 5 mA to 1.0 A
0.05
0.50
-0.8
52
73
2
0.50
1.00
Quiescent Current
Change
ΔIQ
VI = 10.5 A to 25 V
IO = 5 mA
ΔVO/ΔT
VN
Output Voltage Drift(8)
Output Noise Voltage
Ripple Rejection(8)
Dropout Voltage
Output Resistance(8)
Short-Circuit Current
Peak Current(8)
mV/°C
μV
f = 10 Hz to 100 kHz, TA = +25°C
f = 120 Hz, VI= 11.5 V to 21.5 V
IO = 1 A, TJ = +25°C
f = 1 kHz
RR
56
dB
VDrop
RO
V
17
230
2.2
mΩ
mA
A
ISC
VI = 35 V, TA = +25°C
TJ = +25°C
IPK
Notes:
7. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
8. These parameters, although guaranteed, are not 100% tested in production.
© 2006 Fairchild Semiconductor Corporation
KA78XXE / KA78XXAE Rev. 1.9
www.fairchildsemi.com
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