參數(shù)資料
型號: MC7812ABD2TR4G
廠商: ON SEMICONDUCTOR
元件分類: 固定正電壓單路輸出標準穩(wěn)壓器
英文描述: 1.0A positive voltage regulators
中文描述: 12 V FIXED POSITIVE REGULATOR, PSSO2
封裝: LEAD FREE, D2PAK-3
文件頁數(shù): 15/33頁
文件大?。?/td> 289K
代理商: MC7812ABD2TR4G
MC7800, MC7800A, MC7800AE, NCV7800
http://onsemi.com
22
Figure 13. Worst Case Power Dissipation versus
Ambient Temperature (Case 221A)
Figure 14. Input Output Differential as a Function
of Junction Temperature (MC78XXC, AC, B)
,POWER
DISSIP
A
TION
(W)
D
20
16
12
8.0
4.0
0
-50
-25
0
25
50
75
100
125
150
TA, AMBIENT TEMPERATURE (°C)
P
qHS = 0°C/W
DIFFERENTIAL
(V)
in
out
,INPUT-OUTPUT
VOL
TAGE
0.5
0
-75
-50
-25
0
25
50
75
100
125
TJ, JUNCTION TEMPERATURE (°C)
-V
V
IO = 0 mA
IO = 20 mA
IO = 1.0 A
IO = 500 mA
IO = 200 mA
DVO = 2% of VO
- - - Extended Curve for MC78XXB
qJC = 5°C/W
qJA = 65°C/W
TJ(max) = 150°C
qHS = 5°C/W
qHS = 15°C/W
No Heatsink
2.0
1.5
1.0
2.5
Figure 15. D2PAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
R
,THERMAL
RESIST
ANCE
JA
θ
JUNCTION‐T
O‐AIR
(
C/W)°
30
40
50
60
70
80
1.0
1.5
2.0
2.5
3.0
3.5
0
102030
25
15
5.0
L, LENGTH OF COPPER (mm)
PD(max) for TA = 50°C
Minimum
Size Pad
2.0 oz. Copper
L
Free Air
Mounted
Vertically
P
D
,MAXIMUM
POWER
DISSIP
A
TION
(W)
RqJA
40
50
60
70
80
90
100
0
0.4
0.8
1.2
1.6
2.0
2.4
010
20
30
25
15
5.0
L, LENGTH OF COPPER (mm)
PD(max) for TA = 50°C
Minimum
Size Pad
P
D
L
,MAXIMUM
POWER
DISSIP
A
TION
(W)
Free Air
Mounted
Vertically
RqJA
2.0 oz. Copper
R
,THERMAL
RESIST
ANCE
JA
θ
JUNCTION-T
O-AIR
(
C/W)°
Figure 16. DPAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
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