LM340-N, LM78xx
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SNOSBT0I –FEBRUARY 2000–REVISED MARCH 2013
LM340-N Electrical Characteristics(1) (continued)
0°C ≤ TJ ≤ +125°C unless otherwise specified
Output Voltage
5V
10V
Typ
2.0
8
12V
19V
Typ
2.0
15V
23V
Typ
2.0
Symbol
Input Voltage (unless otherwise noted)
Units
Parameter
Conditions
Min
Max
Min
Max
Min
Max
RO
Dropout Voltage TJ = 25°C, IO = 1A
V
Output
Resistance
f = 1 kHz
TJ = 25°C
TJ = 25°C
18
19
mΩ
Short-Circuit
Current
2.1
2.4
1.5
2.4
1.2
2.4
A
A
Peak Output
Current
Average TC of
VOUT
0°C ≤ TJ ≤ +125°C, IO = 5
mA
−0.6
−1.5
−1.8
mV/°C
VIN
Input Voltage
Required to
Maintain Line
Regulation
TJ = 25°C, IO ≤ 1A
7.5
14.6
17.7
V
LM7808C
Electrical Characteristics
0°C ≤ TJ ≤ +150°C, VI = 14V, IO = 500 mA, CI = 0.33 μF, CO = 0.1 μF, unless otherwise specified
Symbol
Parameter
Conditions(1)
LM7808C
Typ
8.0
Units
Min
Max
8.3
160
80
VO
Output Voltage
TJ = 25°C
TJ = 25°C
7.7
V
ΔVO
Line Regulation
10.5V ≤ VI ≤ 25V
6.0
mV
11.0V ≤ VI ≤ 17V
2.0
ΔVO
Load Regulation
TJ = 25°C
5.0 mA ≤ IO ≤ 1.5A
250 mA ≤ IO ≤ 750 mA
12
160
80
mV
4.0
VO
IQ
Output Voltage
Quiescent Current
Quiescent
11.5V ≤ VI ≤ 23V, 5.0 mA ≤ IO ≤ 1.0A, P ≤ 15W
TJ = 25°C
7.6
56
8.4
8.0
1.0
0.5
V
4.3
mA
mA
ΔIQ
With Line
With Load
11.5V ≤ VI ≤ 25V
Current Change
Noise
5.0 mA ≤ IO ≤ 1.0A
VN
TA = 25°C, 10 Hz ≤ f ≤ 100 kHz
f = 120 Hz, IO = 350 mA, TJ = 25°C
IO = 1.0A, TJ = 25°C
f = 1.0 kHz
52
72
μV
dB
V
ΔVI/ΔVO Ripple Rejection
VDO
RO
Dropout Voltage
2.0
16
Output Resistance
mΩ
A
IOS
Output Short Circuit Current
Peak Output Current
TJ = 25°C, VI = 35V
0.45
2.2
IPK
TJ = 25°C
A
ΔVO/ΔT
Average Temperature Coefficient of IO = 5.0 mA
Output Voltage
0.8
mV/°C
(1) 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.
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