L78xx, L78xxC, L78xxAB, L78xxAC
Electrical characteristics
Refer to the test circuits, TJ = 0 to 125 °C, VI = 14 V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF
unless otherwise specified.
Table 14. Electrical characteristics of L7808C
Symbol
Parameter
Output voltage
Test conditions
Min.
Typ.
Max.
Unit
VO
VO
VO
TJ = 25°C
7.7
7.6
7.6
8
8
8
8.3
8.4
8.4
160
80
V
V
V
Output voltage
Output voltage
IO = 5 mA to 1 A, VI = 10.5 to 21 V
IO = 1 A, VI = 21 to 25 V, TJ = 25°C
VI = 10.5 to 25 V, TJ = 25°C
(1)
ΔVO
Line regulation
mV
VI = 11 to 17 V, TJ = 25°C
I
O = 5 mA to 1.5 A, TJ = 25°C
160
80
(1)
ΔVO
Load regulation
mV
mA
mA
IO = 250 to 750 mA, TJ = 25°C
TJ = 25°C
Id
Quiescent current
8
IO = 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 V due to heating effects must be
O
taken into account separately. Pulse testing with low duty cycle is used.
Doc ID 2143 Rev 30
19/57
STMICROELECTRONICS [ ST ]
