GM1117S 查看數據表（PDF） - Gamma Microelectronics Inc.
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GM1117S Datasheet PDF : 15 Pages
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GM1117S
1A LOW DROPOUT
PRECISION VOLTAGE REGULATOR
As a design aid, the table below shows the value of the ΘJA of SOT-223 and TO-252 for different
heat sink area.
Layout
Copper Area
* Top Side (in2)
Bottom Side (in2)
1
0.0123
0
2
0.066
0
3
0.3
0
4
0.53
0
5
0.76
0
6
1
0
7
0
0.2
8
0
0.4
9
0
0.6
10
0
0.8
11
0
1
12
0.066
0.066
13
0.175
0.175
14
0.284
0.284
15
0.392
0.392
16
0.5
0.5
* Tab of device attached to top side copper.
Thermal Resistance
(ΘJA, °C/W) SOT-223 (ΘJA, °C/W) TO-252
136
103
123
87
84
60
75
54
69
52
66
47
115
84
98
70
89
63
82
57
79
57
125
89
93
72
83
61
75
55
70
53
12
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