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LM340A Datasheet(PDF) 5 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza LM340A
Descripción Electrónicos  Series 3-Terminal Positive Regulators
Download  15 Pages
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM340A Datasheet(HTML) 5 Page - National Semiconductor (TI)

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LM7808C
Electrical Characteristics
0˚C
≤ T
J ≤ +150˚C, VI = 14V, IO = 500 mA, CI = 0.33 µF, CO = 0.1 µF, unless otherwise specified
Symbol
Parameter
Conditions (Note 6)
LM7808C
Units
Min
Typ
Max
V
O
Output Voltage
T
J = 25˚C
7.7
8.0
8.3
V
∆V
O
Line Regulation
T
J = 25˚C
10.5V
≤ V
I ≤ 25V
6.0
160
mV
11.0V
≤ V
I ≤ 17V
2.0
80
∆V
O
Load Regulation
T
J = 25˚C
5.0 mA
≤ I
O ≤ 1.5A
12
160
mV
250 mA
≤ I
O ≤ 750
mA
4.0
80
V
O
Output Voltage
11.5V
≤ V
I ≤ 23V, 5.0 mA ≤ IO ≤ 1.0A, P ≤ 15W
7.6
8.4
V
I
Q
Quiescent
Current
T
J = 25˚C
4.3
8.0
mA
∆I
Q
Quiescent
With Line
11.5V
≤ V
I ≤ 25V
1.0
mA
Current Change
With
Load
5.0 mA
≤ I
O ≤ 1.0A
0.5
V
N
Noise
T
A = 25˚C, 10 Hz ≤ f ≤ 100 kHz
52
µV
∆V
I/∆VO
Ripple Rejection
f = 120 Hz, I
O = 350 mA, TJ = 25˚C
56
72
dB
V
DO
Dropout Voltage
I
O = 1.0A, TJ = 25˚C
2.0
V
R
O
Output Resistance
f = 1.0 kHz
16
m
I
OS
Output Short Circuit Current
T
J = 25˚C, VI = 35V
0.45
A
I
PK
Peak Output Current
T
J = 25˚C
2.2
A
∆V
O/∆T
Average Temperature
I
O = 5.0 mA
0.8
mV/˚C
Coefficient of Output Voltage
Note 6: All characteristics are measured with a 0.22 µF capacitor from input to ground and a 0.1 µF capacitor from output to ground. All characteristics except noise
voltage and ripple rejection ratio are measured using pulse techniques (tw ≤ 10 ms, duty cycle ≤ 5%). Output voltage changes due to changes in internal temperature
must be taken into account separately.
Typical Performance Characteristics
Maximum Average Power
Dissipation
DS007781-22
Maximum Average Power
Dissipation
DS007781-23
Maximum Power
Dissipation (TO-263)
(See Note 2)
DS007781-24
www.national.com
5


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