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VND5050AJ-E Fiches technique(PDF) 17 Page - STMicroelectronics

No de pièce VND5050AJ-E
Description  Double channel high side driver with analog current sense for automotive applications
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VND5050AJ-E Fiches technique(HTML) 17 Page - STMicroelectronics

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VND5050AJ-E / VND5050AK-E
Package and PCB thermal data
17/26
4
Package and PCB thermal data
4.1
PowerSSO-12 thermal data
Figure 25. PowerSSO-12 PC Board
Figure 26. Rthj-amb Vs. PCB copper area in open box free air condition
Figure 27.
PowerSSO-12 Thermal Impedance Junction Ambient Single Pulse
Pulse Calculation Formula
Z
TH
δ
R
TH δ
Z
THtp 1
δ
()
+
=
where
δ = t
P/T
Layout condition of Rth and Zth measurements (PCB: Double layer, Thermal Vias, FR4 area= 77mm x 86mm,
PCB thickness=1.6mm, Cu thickness=70
µm (front and back side), Copper areas: from minimum pad lay-out to 8cm2).
40
45
50
55
60
65
70
02
46
8
10
RTHj_amb(°C/W)
PCB Cu heatsink area (cm^2)
0.1
1
10
100
1000
0.0001
0.001
0.01
0.1
1
10
100
1000
Time (s)
ZTH (˚C/W)
Footprint
8 cm2
2 cm
2


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