L78xx, L78xxC, L78xxAB, L78xxAC
Electrical characteristics
5
Electrical characteristics
Refer to the test circuits, T = -55 to 150 °C, V = 10 V, I = 500 mA, C = 0.33 µF,
J
I
O
I
C = 0.1 µF unless otherwise specified.
O
Table 4. Electrical characteristics of L7805
Test conditions
Symbol
Parameter
Output voltage
Min.
Typ.
Max.
Unit
VO
VO
TJ = 25°C
4.8
5
5
3
1
5.2
5.35
50
V
V
Output voltage
IO = 5 mA to 1 A, VI = 8 to 20 V
VI = 7 to 25 V, TJ = 25°C
VI = 8 to 12 V, TJ = 25°C
4.65
(1)
VO
Line regulation
mV
25
I
O = 5 mA to 1.5 A, TJ = 25°C
100
25
(1)
VO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
6
IO = 5 mA to 1 A
VI = 8 to 25 V
0.5
0.8
Id
Quiescent current change
VO/T Output voltage drift
IO = 5 mA
0.6
mV/°C
µV/VO
dB
eN
SVR
Vd
Output noise voltage
Supply voltage rejection
Dropout voltage
B =10 Hz to 100 kHz, TJ = 25°C
VI = 8 to 18 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 kHz
40
68
2
2.5
V
RO
Isc
Output resistance
17
m
A
Short circuit current
Short circuit peak current
VI = 35 V, TJ = 25°C
TJ = 25°C
0.75
2.2
1.2
3.3
Iscp
1.3
A
1. 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 cycle is used.
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