LM7808C
Electrical Characteristics
0˚C ≤ TJ ≤ +150˚C, VI = 14V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF, unless otherwise specified
Symbol
Parameter
Conditions (Note 6)
LM7808C
Typ
8.0
Units
Min
Max
8.3
160
80
VO
Output Voltage
TJ = 25˚C
TJ = 25˚C
7.7
V
∆VO
Line Regulation
Load Regulation
10.5V ≤ VI ≤ 25V
6.0
mV
11.0V ≤ VI ≤ 17V
5.0 mA ≤ IO ≤ 1.5A
250 mA ≤ IO ≤ 750
mA
2.0
∆VO
TJ = 25˚C
12
160
80
mV
4.0
VO
IQ
Output Voltage
Quiescent Current
Quiescent
11.5V ≤ VI ≤ 23V, 5.0 mA ≤ IO ≤ 1.0A, P ≤ 15W
TJ = 25˚C
7.6
56
8.4
8.0
1.0
0.5
V
4.3
mA
mA
∆IQ
With Line
With Load
11.5V ≤ VI ≤ 25V
Current Change
Noise
5.0 mA ≤ IO ≤ 1.0A
VN
TA = 25˚C, 10 Hz ≤ f ≤ 100 kHz
f = 120 Hz, IO = 350 mA, TJ = 25˚C
IO = 1.0A, TJ = 25˚C
f = 1.0 kHz
52
72
µV
dB
∆VI/∆VO Ripple Rejection
VDO
RO
Dropout Voltage
2.0
16
V
Output Resistance
mΩ
A
IOS
Output Short Circuit Current
Peak Output Current
TJ = 25˚C, VI = 35V
TJ = 25˚C
0.45
2.2
0.8
IPK
A
∆VO/∆T
Average Temperature
IO = 5.0 mA
mV/˚C
Coefficient of Output Voltage
Note 6: All characteristics are measured with a 0.22 µF capacitor from input to ground and a 0.1 µF capacitor from output to ground. All characteristics except noise
voltage and ripple rejection ratio are measured using pulse techniques (t ≤ 10 ms, duty cycle ≤ 5%). Output voltage changes due to changes in internal temperature
w
must be taken into account separately.
7
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