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參數(shù)資料
| 型號(hào)： | MC78L18ACS |
| 廠(chǎng)商： | VISHAY SEMICONDUCTORS |
| 元件分類(lèi)： | 固定正電壓?jiǎn)温份敵鰳?biāo)準(zhǔn)穩(wěn)壓器 |
| 英文描述： | 18 V FIXED POSITIVE REGULATOR, PDSO8 |
| 封裝： | SO-8 |
| 文件頁(yè)數(shù)： | 7/8頁(yè) |
| 文件大?。?/td> | 71K |
| 代理商： | MC78L18ACS |
Ratings and
Characteristic Curves (TA = 25°C unless otherwise noted)
0
Fig. 1 – Dropout Characteristics
V
O
-
-Output
V
oltage
(V)
VI -- Input Voltage (V)
0
Fig. 4 – Input Bias Current
vs. Input Voltage
I IB
-
-Input
Bias
Current
(mA)
VI -- Input Voltage (V)
0
Fig. 2 – Dropout Voltage
vs. Junction Temperature
V
I-V
O
-
-Input/Output
Dif
ferential
V
oltage
(V)
TJ -- Junction Temperature (°C)
P
D
-
-Power
Dissipation
(mW)
TA -- Ambient Temperature (°C)
Fig. 5 – Max. Average Power Dissipation
vs. Ambient Temperature – TO-92
0
I IB
-
-Input
Bias
Current
(mA)
TA -- Ambient Temperature (°C)
Fig. 3 – Input Bias Current
vs. Ambient Temperature
0
R
θJA
-
Thermal
Resistance
Junction-to-Air
(°
C/W)
L -- Length of Copper (mm)
Fig. 6 – SOP-8 Thermal Resistance & Max.
Power Dissipation vs. P.C.B.Copper Length
2.0
4.0
6.0
8.0
0.5
1.0
1.5
2.0
2.5
1.0
2.0
3.0
4.0
5.0
4.0
6.0
8.0
10
25
50
75
100
125
5.0
10
15
20
25
30
35
40
10
20
30
40
50
25
50
75
100
125
3.0
10,000
1000
100
10
3.2
3.4
3.6
3.8
4.0
4.2
25
50
75
100
125
150
30
50
70
90
110
130
150
170
2.0 oz.
Copper
3.0 mm
L
MC78L05
Vout = 5.0V
TJ = 25°C
IO = 1.0mA
IO = 40mA
IO = 100mA
IO = 70mA
IO = 40mA
IO = 1.0mA
Dropout of Regulation
is defined as when
VO = 2% of VO
MC78L05
VI = 10V
VO = 5.0V
IO = 40mA
R
θJA = 200°C/W
PD(max) to 25°C = 625mW
MC78L05
Vout = 5.0V
IO = 40mA
TJ = 25°C
No Heatsink
PD(max) for TA = 50°C
R
θJA
MC78L00
Vishay
formerly General Semiconductor
Document Number 74823
www.vishay.com
18-Dec-02
7
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