Electrical characteristics
L78xx - L78xxC
Table 15. Electrical characteristics of L7808C (refer to the test circuits, T = 0 to 150°C, V = 14 V,
J
I
I = 500 mA, C = 0.33 µF, C = 0.1 µF unless otherwise specified)
O
I
O
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
Output voltage
TJ = 25°C
7.7
8
8.3
V
IO = 5 mA to 1 A, PO ≤15 W
VI = 10.5 to 25 V
VO
7.6
8
8.4
V
VI = 10.5 to 25 V, TJ = 25°C
VI = 11 to 17 V, TJ = 25°C
160
80
160
80
8
(1)
ΔVO
Line regulation
mV
I
O = 5 mA to 1.5 A, TJ = 25°C
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
I
O = 5 mA to 1 A
0.5
1
ΔId
Quiescent current change
VI = 10.5 to 25 V
ΔVO/ΔT Output voltage drift
IO = 5 mA
-0.8
52
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 = 11.5 to 21.5 V, f = 120 Hz
IO = 1 A, TJ = 25°C
f = 1 KHz
56
2
V
RO
Isc
Output resistance
16
mΩ
A
Short circuit current
VI = 35 V, TJ = 25°C
0.45
2.2
Iscp
Short circuit peak current TJ = 25°C
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.
22/52
STMICROELECTRONICS [ ST ]
