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參數(shù)資料
| 型號： | LM7800C |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Series 3-Terminal Positive Regulators |
| 中文描述： | 系列三端穩(wěn)壓器正 |
| 文件頁數(shù)： | 4/15頁 |
| 文件大小： | 512K |
| 代理商： | LM7800C |
LM340/LM7800C
Electrical Characteristics
(Note 4)
0C
≤
T
J
≤
+125C unless otherwise specified
Output Voltage
5V
10V
Typ
5
12V
19V
Typ
12
15V
23V
Typ
15
Symbol
Input Voltage (unless otherwise noted)
Parameter
Output Voltage
T
J
= 25C, 5 mA
≤
I
O
≤
1A
P
D
≤
15W, 5 mA
≤
I
O
≤
1A
V
MIN
≤
V
IN
≤
V
MAX
Line Regulation
I
O
= 500 mA
Units
Conditions
Min
4.8
4.75
(7.5
≤
V
IN
≤
20)
Max
5.2
5.25
Min
11.5
11.4
(14.5
≤
V
IN
≤
27)
Max
12.5
12.6 14.25
Min
14.4
Max
15.6
15.75
V
O
V
V
V
(17.5
≤
V
IN
≤
30)
4
(17.5
≤
V
IN
≤
30)
V
O
T
J
= 25C
V
IN
0C
≤
T
J
≤
+125C
V
IN
T
J
= 25C
V
IN
0C
≤
T
J
≤
+125C
V
IN
5 mA
≤
I
O
≤
1.5A
250 mA
≤
I
O
≤
750 mA
3
50
4
120
150
mV
V
mV
V
mV
V
mV
V
mV
mV
mV
mA
mA
mA
mA
V
mA
V
μV
dB
dB
(7
≤
V
IN
≤
25)
(14.5
≤
V
IN
≤
30)
50
120
150
(8
≤
V
IN
≤
20)
(15
≤
V
IN
≤
27)
(18.5
≤
V
IN
≤
30)
I
O
≤
1A
50
120
150
(7.5
≤
V
IN
≤
20)
(14.6
≤
V
IN
≤
27)
(17.7
≤
V
IN
≤
30)
25
60
75
(8
≤
V
IN
≤
12)
10
(16
≤
V
IN
≤
22)
12
(20
≤
V
IN
≤
26)
12
V
O
Load Regulation
T
J
= 25C
50
25
50
8
8.5
0.5
1.0
120
60
120
8
8.5
0.5
1.0
150
75
150
8
8.5
0.5
1.0
5 mA
≤
I
O
≤
1A, 0C
≤
T
J
≤
+125C
I
O
≤
1A
T
J
= 25C
0C
≤
T
J
≤
+125C
5 mA
≤
I
O
≤
1A
T
J
= 25C, I
O
≤
1A
V
MIN
≤
V
IN
≤
V
MAX
I
O
≤
500 mA, 0C
≤
T
J
≤
+125C
V
MIN
≤
V
IN
≤
V
MAX
T
A
= 25C, 10 Hz
≤
f
≤
100 kHz
I
Q
Quiescent Current
I
Q
Quiescent Current
Change
(7.5
≤
V
IN
≤
20)
(14.8
≤
V
IN
≤
27)
(17.9
≤
V
IN
≤
30)
1.0
1.0
1.0
(7
≤
V
IN
≤
25)
40
62
80
62
(14.5
≤
V
IN
≤
30)
75
55
72
55
(17.5
≤
V
IN
≤
30)
90
54
70
54
V
N
Output Noise Voltage
Ripple Rejection
I
O
≤
1A, T
J
= 25C
or I
O
≤
500 mA,
0C
≤
T
J
≤
+125C
f = 120 Hz
V
MIN
≤
V
IN
≤
V
MAX
(8
≤
V
IN
≤
18)
(15
≤
V
IN
≤
25)
(18.5
≤
V
IN
≤
28.5)
2.0
19
1.2
2.4
1.8
V
R
O
Dropout Voltage
Output Resistance
Short-Circuit Current
Peak Output Current
Average TC of V
OUT
Input Voltage
Required to Maintain
Line Regulation
T
J
= 25C, I
O
= 1A
f = 1 kHz
T
J
= 25C
T
J
= 25C
0C
≤
T
J
≤
+125C, I
O
= 5 mA
T
J
= 25C, I
O
≤
1A
2.0
8
2.1
2.4
0.6
2.0
18
1.5
2.4
1.5
V
m
A
A
mV/C
V
IN
7.5
14.6
17.7
V
Note 1:
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions are conditions under which the device functions
but the specifications might not be guaranteed. For guaranteed specifications and test conditions see the Electrical Characteristics.
Note 2:
The maximum allowable power dissipation at any ambient temperature is a function of the maximum junction temperature for operation (T
= 125C or
150C), the junction-to-ambient thermal resistance (
θ
JA
), and the ambient temperature (T
A
). P
DMAX
= (T
JMAX
T
A
)/
θ
JA
. If this dissipation is exceeded, the die tem-
perature will rise above T
and the electrical specifications do not apply. If the die temperature rises above 150C, the device will go into thermal shutdown. For
the TO-3 package (K, KC), the junction-to-ambient thermal resistance (
θ
) is 39C/W. When using a heatsink,
θ
is the sum of the 4C/W junction-to-case thermal
resistance (
θ
) of the TO-3 package and the case-to-ambient thermal resistance of the heatsink. For the TO-220 package (T),
θ
is 54C/W and
θ
JC
is 4C/W. If
SOT-223 is used, the junction-to-ambient thermal resistance is 174C/W and can be reduced by a heatsink (see Applications Hints on heatsinking).
If the TO-263 package is used, the thermal resistance can be reduced by increasing the PC board copper area thermally connected to the package: Using 0.5 square
inches of copper area,
θ
JA
is 50C/W; with 1 square inch of copper area,
θ
JA
is 37C/W; and with 1.6 or more inches of copper area,
θ
JA
is 32C/W.
Note 3:
ESD rating is based on the human body model, 100 pF discharged through 1.5 k
.
Note 4:
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 (t
w
≤
10 ms, duty cycle
≤
5%). Output voltage changes due to changes in internal temperature
must be taken into account separately.
Note 5:
A military RETS specification is available on request. At the time of printing, the military RETS specifications for the LM140AK-5.0/883, LM140AK-12/883,
and LM140AK-15/883 complied with the min and max limits for the respective versions of the LM140A. At the time of printing, the military RETS specifications for
the LM140K-5.0/883, LM140K-12/883, and LM140K-15/883 complied with the min and max limits for the respective versions of the LM140. The LM140H/883,
LM140K/883, and LM140AK/883 may also be procured as a Standard Military Drawing.
www.national.com
4
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