LM340-N, LM78xx
SNOSBT0I –FEBRUARY 2000–REVISED MARCH 2013
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LM340A Electrical Characteristics
IOUT = 1A, 0°C ≤ TJ ≤ + 125°C (LM340A) unless otherwise specified(1)
Output Voltage
5V
10V
Typ
5
12V
19V
Typ
12
15V
23V
Typ
15
Symbol
Input Voltage (unless otherwise noted)
Units
Parameter
Conditions
TJ = 25°C
Min
4.9
4.8
Max
5.1
Min
11.75
11.5
Max
12.25
12.5
Min
14.7
14.4
Max
VO
Output
Voltage
15.3
15.6
V
V
P
D ≤ 15W, 5 mA ≤ IO ≤ 1A
MIN ≤ VIN ≤ VMAX
5.2
V
(7.5 ≤ VIN ≤ 20)
10
(7.5 ≤ VIN ≤ 20)
(14.8 ≤ VIN ≤ 27)
18
(14.8 ≤ VIN ≤ 27)
(17.9 ≤ VIN ≤ 30)
22
(17.9 ≤ VIN ≤ 30)
V
ΔVO
Line
Regulation
IO = 500 mA
ΔVIN
mV
V
TJ = 25°C
ΔVIN
3
10
4
18
4
22
mV
V
(7.5 ≤ VIN ≤ 20)
(14.5 ≤ VIN ≤ 27)
(17.5 ≤ VIN ≤ 30)
TJ = 25°C
Over Temperature
ΔVIN
4
9
10
30
(20 ≤ VIN ≤ 26)
12
mV
mV
V
12
30
(8 ≤ VIN ≤ 12)
(16 ≤ VIN ≤ 22)
ΔVO
Load
TJ =
5 mA ≤ IO ≤ 1.5A
10
25
15
12
32
19
35
21
mV
mV
Regulation
25°C
250 mA ≤ IO
≤
750 mA
Over Temperature,
5 mA ≤ IO ≤ 1A
TJ = 25°C
25
60
75
mV
IQ
Quiescent
Current
6
6
6
mA
mA
mA
mA
V
Over Temperature
5 mA ≤ IO ≤ 1A
TJ = 25°C, IO = 1A
6.5
6.5
6.5
ΔIQ
Quiescent
Current
Change
0.5
0.5
0.5
0.8
0.8
0.8
V
MIN ≤ VIN ≤ VMAX
IO = 500 mA
MIN ≤ VIN ≤ VMAX
Output Noise TA = 25°C, 10 Hz ≤ f ≤ 100
(7.5 ≤ VIN ≤ 20)
0.8
(14.8 ≤ VIN ≤ 27)
0.8
(17.9 ≤ VIN ≤ 30)
0.8
mA
V
V
(8 ≤ VIN ≤ 25)
(15 ≤ VIN ≤ 30)
(17.9 ≤ VIN ≤ 30)
VN
40
75
90
μV
Voltage
kHz
Ripple
Rejection
TJ = 25°C, f = 120 Hz, IO
1A
=
68
68
80
61
61
72
60
60
70
dB
dB
or f = 120 Hz, IO = 500 mA,
Over Temperature,
V
MIN ≤ VIN ≤ VMAX
(8 ≤ VIN ≤ 18)
(15 ≤ VIN ≤ 25)
(18.5 ≤ VIN ≤ 28.5)
V
V
RO
Dropout
Voltage
TJ = 25°C, IO = 1A
2.0
2.0
2.0
Output
Resistance
f = 1 kHz
8
18
1.5
19
1.2
mΩ
A
Short-Circuit TJ = 25°C
Current
2.1
2.4
−0.6
Peak Output TJ = 25°C
Current
2.4
2.4
A
Average TC
of VO
Min, TJ = 0°C, IO = 5 mA
−1.5
−1.8
mV/°C
VIN
Input Voltage TJ = 25°C
Required to
7.5
14.5
17.5
V
Maintain Line
Regulation
(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.
4
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