LM78XX (KA78XX, MC78XX) FIXED VOLTAGE REGULATOR (POSITIVE)
LM7808A/RA ELECTRICAL CHARACTERISTICS
(Refer to the test circuits. TJ = 0 to+150 °C, IO = 1A, V I = 14V, C I = 0.33µF, C O=0.1µF, unless otherwise specified)
Characteristic
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
Symbol
VO
∆VO
∆VO
IQ
∆IQ
∆V/∆T
VN
RR
VD
RO
ISC
IPK
Test Conditions
TJ =+25 °C
IO = 5mA to 1A, PD ≤15W
VI = 8.6 to 21V
VI= 10.6 to 25V
IO = 500mA
VI= 11to 17V
TJ =+25 °C VI= 10.4V to 23V
VI= 11V to 17V
TJ =+25 °C
IO = 5mA to 1.5A
IO = 5mA to 1A
IO = 250 to 750mA
TJ =+25 °C
IO = 5mA to 1A
VI = 11V to 25V, IO = 500mA
VI= 10.6V to 23V, TJ =+25 °C
IO = 5mA
f = 10Hz to 100KHz
TA =+25 °C
f = 120Hz, IO = 500mA
VI = 11.5V to 21.5V
IO = 1A, TJ =+25 °C
f = 1KHz
VI= 35V, TA =+25°C
TJ=+25 °C
Min Typ Max Unit
7.84
8
8.16
7.7
8
8.3
V
6
80
3
80
mV
6
80
2
40
12 100
12 100
mV
5
50
5.0
6
mA
0.5
0.8
mA
0.8
-0.8
mV /°C
10
µV/VO
62
dB
2
V
18
mΩ
250
mA
2.2
A
* Load and line regulation are specified at constant, junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.