Data Sheet

LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
LM78XX / LM78XXA Rev. 1.3.1 3
Electrical Characteristics (LM7805)
Refer to the test circuit, -40°C < T
J
< 125°C, I
O
= 500 mA, V
I
= 10 V, C
I
= 0.1 μF, unless otherwise specified.
Notes:
2. 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.
3. These parameters, although guaranteed, are not 100% tested in production.
Symbol Parameter Conditions Min. Typ. Max. Unit
V
O
Output Voltage
T
J
= +25°C 4.805.005.20
V
I
O
= 5 mA to 1 A, P
O
≤ 15 W,
V
I
= 7 V to 20 V
4.75 5.00 5.25
Regline Line Regulation
(2)
T
J
= +25°C
V
I
= 7 V to 25 V 4.0 100.0
mV
V
I
= 8 V to 12 V 1.6 50.0
Regload Load Regulation
(2)
T
J
= +25°C
I
O
= 5 mA to 1.5 A 9.0 100.0
mV
I
O
= 250 mA to 750 mA 4.0 50.0
I
Q
Quiescent Current T
J
= +25°C58mA
ΔI
Q
Quiescent Current
Change
I
O
= 5 mA to 1 A 0.03 0.50
mA
V
I
= 7 V to 25 V 0.30 1.30
ΔV
O
/ΔT Output Voltage Drift
(3)
I
O
= 5 mA -0.8 mV/°C
V
N
Output Noise Voltage f = 10 Hz to 100 kHz, T
A
= +25°C42μV
RR Ripple Rejection
(3)
f = 120 Hz, V
I
= 8 V to 18 V 62 73 dB
V
DROP
Dropout Voltage T
J
= +25°C, I
O
= 1 A 2 V
R
O
Output Resistance
(3)
f = 1 kHz 15 mΩ
I
SC
Short-Circuit Current T
J
= +25°C, V
I
= 35 V 230 mA
I
PK
Peak Current
(3)
T
J
= +25°C2.2A