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L4993 数据表(PDF) 21 Page - STMicroelectronics

部件名 L4993
功能描述  Low drop voltage regulator
PDF  30 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L4993 数据表(HTML) 21 Page - STMicroelectronics

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L4993
Package and PCB thermal data
21/30
4.2
SO-20 thermal data
Figure 32.
SO-20 PC board
Note:
Layout condition of Rth and Zth measurements (PCB FR4 area= 58mm x 58mm,PCB
thickness = 2mm, Cu thickness=35
µm , Copper areas: from minimum pad lay-out to 6cm2).
Figure 33.
Rthj-amb Vs. PCB copper area in open box free air condition
50
52
54
56
58
60
62
64
66
68
70
01
2
3
45
6
7
PCB Cu heatsink area (cm^2)



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