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L4993D Datasheet(PDF) 22 Page - STMicroelectronics

Part # L4993D
Description  Low drop voltage regulator
PDF  30 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4993D Datasheet(HTML) 22 Page - STMicroelectronics

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Package and PCB thermal data
L4993
22/30
Figure 34. SO-20 thermal impedance junction ambient single pulse
Equation 2: pulse calculation formula
where
δ = tP/T
Figure 35.
Thermal fitting model of Vreg in SO-20
1
10
100
0,0001
0,001
0,01
0,1
1
10
100
1000
Time (s)
ZTH (°C/W)
Footprint
6 c
m2
Z
TH
δ
R
TH
δ Z
THtp
1
δ
–
()
+
⋅
=



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