LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator
Electrical Characteristics (LM7815)
Refer to the test circuit, -40°C < T
J
< 125°C, I
O
= 500 mA, V
I
= 23 V, C
I
= 0.33
μF,C
O
= 0.1
μF,
unless otherwise
specified.
Symbol
V
O
Parameter
T
J
= +25°C
Output Voltage
Conditions
I
O
= 5 mA to 1 A, P
O
≤
15 W,
V
I
= 17.5 V to 30 V
T
J
= +25°C
T
J
= +25°C
T
J
=+25°C
I
O
= 5 mA to 1 A
V
I
= 17.5 V to 30 V
I
O
= 5 mA
f = 10 Hz to 100 kHz, T
A
= +25°C
f = 120 Hz, V
I
= 18.5 V to 28.5 V
I
O
= 1 A, T
J
=+25°C
f = 1 kHz
V
I
= 35 V, T
J
= +25°C
T
J
= +25°C
V
I
= 17.5 V to 30 V
V
I
= 20 V to 26 V
I
O
= 5 mA to 1.5 A
I
O
= 250 mA to 750 mA
Min.
14.40
14.25
Typ.
15.00
15.00
11
3
12
4
5.2
Max.
15.60
15.75
300
150
300
150
8.0
0.5
1.0
Unit
V
Regline
Line Regulation
(14)
Load Regulation
(14)
Quiescent Current
Quiescent Current
Change
Output Voltage Drift
(15)
Output Noise Voltage
Ripple Rejection
(15)
Dropout Voltage
Output Resistance
(15)
Short-Circuit Current
Peak Current
(15)
mV
Regload
I
Q
ΔI
Q
ΔV
O
/ΔT
V
N
RR
V
DROP
R
O
I
SC
I
PK
mV
mA
mA
mV/°C
μV/V
O
dB
V
mΩ
mA
A
-1.0
90.0
54.0
70.0
2.0
19.0
250
2.2
Notes:
14. 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.
15. These parameters, although guaranteed, are not 100% tested in production.
© 2006 Fairchild Semiconductor Corporation
LM78XX / LM78XXA Rev. 1.3.0
www.fairchildsemi.com
9
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