LM78XX/LM78XXA 3-Terminal 1A Positive Voltage Regulator
Electrical Characteristics (LM7805)
Refer to the test circuits. -40°C
<
T
J
<
125°C, I
O
= 500mA, V
I
= 10V, C
I
= 0.1
µ
F, unless otherwise specified.
Symbol
V
O
Parameter
Output Voltage
T
J
= +25°C
Conditions
5mA
≤
I
O
≤
1A, P
O
≤
15W,
V
I
= 7V to 20V
Min.
4.8
4.75
–
–
–
–
–
–
–
–
–
62.0
–
–
–
–
Typ.
5.0
5.0
4.0
1.6
9.0
4.0
5.0
0.03
0.3
-0.8
42.0
73.0
2.0
15.0
230
2.2
Max.
5.2
5.25
100
50.0
100
50.0
8.0
0.5
1.3
–
–
–
–
–
–
–
Unit
V
Regline
Line Regulation
(1)
T
J
= +25°C
T
J
= +25°C
T
J
= +25°C
V
O
= 7V to 25V
V
I
= 8V to 12V
I
O
= 5mA to 1.5A
I
O
= 250mA to 750mA
mV
Regload Load Regulation
(1)
mV
I
Q
∆
I
Q
∆
V
O
/
∆
T
V
N
RR
V
DROP
r
O
I
SC
I
PK
Quiescent Current
mA
mA
Quiescent Current Change I
O
= 5mA to 1A
V
I
= 7V to 25V
Output Voltage Drift
(2)
Output Noise Voltage
Ripple Rejection
(2)
Dropout Voltage
Output Resistance
(2)
Short Circuit Current
Peak Current
(2)
I
O
= 5mA
f = 10Hz to 100kHz, T
A
= +25°C
f = 120Hz, V
O
= 8V to 18V
I
O
= 1A, T
J
= +25°C
f = 1kHz
V
I
= 35V, T
A
= +25°C
T
J
= +25°C
mV/°C
µ
V/V
O
dB
V
m
Ω
mA
A
Notes:
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.
2. These parameters, although guaranteed, are not 100% tested in production.
3
LM78XX/LM78XXA Rev. 1.0.1
www.fairchildsemi.com
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