L78xxAB Datasheet, PDF (10/26 Pages) STMicroelectronics – Precision 1 A regulators

Electrical characteristics
L78xxAB - L78xxAC
Table 7.
Symbol
Electrical characteristics of L7809A (V_I = 15 V, I_O = 1 A, T_J = 0 to 150 °C (L7809AC),
T_J = -40 to 125 °C (L7809AB), unless otherwise specified)
Parameter
Test conditions
Min. Typ. Max. Unit
V_O Output voltage
V_O Output voltage
ΔV_O ⁽¹⁾ Line regulation
ΔV_O ⁽¹⁾ Load regulation
I_q
Quiescent current
T_J = 25°C
I_O = 5mA to 1A, P_O ≤15W
V_I = 10.6 to 23V
V_I = 10.6 to 25V, I_O = 500 mA
V_I = 11 to 17V
V_I = 11 to 17V, T_J = 25°C
V_I = 10.4 to 23V, T_J = 25°C
I_O = 5mA to 1A
I_O = 5mA to 1.5A, T_J = 25°C
I_O = 250 to 750mA
T_J = 25°C
8.82 9 9.18 V
8.65 9 9.35 V
12
90
mV
15
90
mV
5
45 mV
12
90
mV
25 100 mV
30 100
V
10
50
V
4.3
6
mA
6
mA
V_I = 11 to 25V, I_O = 500 mA
0.8 mA
ΔI_q Quiescent current change V_I = 10.6 to 23V, T_J = 25°C
0.8 mA
I_O = 5mA to 1A
0.5 mA
SVR Supply voltage rejection
V_I = 11.5 to 21.5V, f = 120Hz,
I_O = 500mA
61
dB
V_d Dropout voltage
I_O = 1A, T_J = 25°C
2
V
eN Output noise voltage
T_A = 25°C, B =10Hz to 100kHz
10
µV/V_O
R_O Output resistance
f =1kHz
18
mΩ
I_sc Short circuit current
V_I = 35V, T_A = 25°C
0.2
A
I_scp Short circuit peak current T_J = 25°C
2.2
A
ΔV_O/ΔT Output voltage drift
-0.8
mV/°C
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 cycle is used.
10/26