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VNF9D5F Datasheet(PDF) 92 Page - STMicroelectronics

Part # VNF9D5F
Description  2-channel high-side driver with STi²Fuse protection for automotive power distribution applications
PDF  106 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VNF9D5F Datasheet(HTML) 92 Page - STMicroelectronics

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Figure 47. QFN 6x6 thermal impedance junction ambient
101
100
102
10-4
10-3
10-2
103
10-1
100
101
102
Time (s)
ZthJA (°C/W)
Cu = footprint
Cu = 2 cm2
Cu = 8 cm2
4 layer
Zthδ = Rth · δ + Ztht
p (1 - δ)
where δ = tP/T
Figure 48. Thermal fitting model
PdCh1
PdCh2
TJ
TJ
R1
R2
R3
R4
R5
R6
R7
R8
C1
C2
C3
C4
C5
C6
C7
C8
GAPGCFT00438
Note:
The fitting model is a simplified thermal tool and is valid for transient evolutions where the embedded protections
(power limitation or thermal cycling during thermal shutdown) are not triggered.
VNF9D5F
Package and PCB thermal data
DS13946 - Rev 6
page 92/106



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