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VN7140AS Datasheet(PDF) 29 Page - STMicroelectronics

Part # VN7140AS
Description  High-side driver with MultiSense analog feedback for automotive applications
PDF  45 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VN7140AS Datasheet(HTML) 29 Page - STMicroelectronics

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Figure 43. SO-8 Rthj-amb vs PCB copper area in open box free air condition (one channel on)
50
60
70
80
90
100
110
0
2
4
6
8
10
RTHjamb
RTHjamb
GAPGCFT01152
RTHj_amb on 4Layer PCB: 48.5°C/W
Figure 44. SO-8 thermal impedance junction ambient single pulse (one channel on)
GAPGCFT01153
0.1
1
10
100
0.0001
0.001
0.01
0.1
1
10
100
1000
ZTH (°C/W)
Time (s)
Cu=8 cm2
Cu=2 cm2
Cu=foot print
4 Layer
Equation: pulse calculation formula
ZTHδ = RTH · δ + ZTHtp (1 - δ)
where δ = tP/T
VN7140AJ, VN7140AS
SO-8 thermal data
DS10830 - Rev 4
page 29/45



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