Electrical Characteristics (LM7805A) (Continued)
Refer to the test circuits. 0°C < TJ < 125°C, IO = 1A, VI = 10V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Symbol
Parameter
Conditions
Min. Typ. Max. Unit
VO Output Voltage
TJ = +25°C
4.9
IO = 5mA to 1A, PO ≤ 15W,
4.8
VI = 7.5V to 20V
Regline Line Regulation(19)
VI = 7.5V to 25V, IO = 500mA
–
VI = 8V to 12V
–
TJ = +25°C
VI = 7.3V to 20V
–
VI = 8V to 12V
–
Regload Load Regulation(19)
TJ = +25°C, IO = 5mA to 1.5A
–
IO = 5mA to 1A
–
IO = 250mA to 750mA
–
IQ Quiescent Current
TJ = +25°C
–
∆IQ Quiescent Current
IO = 5mA to 1A
–
Change
VI = 8V to 25V, IO = 500mA
–
VI = 7.5V to 20V, TJ = +25°C
–
∆VO/∆T Output Voltage Drift(20) IO = 5mA
–
VN Output Noise Voltage f = 10Hz to 100kHz, TA = +25°C
–
RR Ripple Rejection(20)
f = 120Hz, IO = 500mA, VI = 8V to 18V
–
VDROP Dropout Voltage
IO = 1A, TJ = +25°C
–
rO
Output Resistance(20) f = 1kHz
–
ISC Short Circuit Current VI = 35V, TA = +25°C
–
IPK
Peak Current(20)
TJ = +25°C
–
5.0
5.1
V
5.0
5.2
5.0
50.0
mV
3.0
50.0
5.0
50.0
1.5
25.0
9.0
100
mV
9.0
100
4.0
50.0
5.0
6.0
mA
–
0.5
mA
–
0.8
–
0.8
-0.8
–
mV/°C
10.0
–
µV/VO
68.0
–
dB
2.0
–
V
17.0
–
mΩ
250
–
mA
2.2
–
A
Notes:
19. 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.
20. These parameters, although guaranteed, are not 100% tested in production.
12
LM78XX/LM78XXA Rev. 1.0
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