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LP3852 Fiches technique(PDF) 16 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
No de pièce LP3852
Description  1.5A Fast Response Ultra Low Dropout Linear Regulators
PDF  19 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

LP3852 Fiches technique(HTML) 16 Page - National Semiconductor (TI)

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Application Hints (Continued)
θ
JA of TO-263 package for different copper area sizes, using
a typical PCB with 1 ounce copper and no solder mask over
the copper area for heat sinking.
As shown in the figure, increasing the copper area beyond 1
square inch produces very little improvement. The minimum
value for
θ
JA for the TO-263 package mounted to a PCB is
32˚C/W.
Figure 6 shows the maximum allowable power dissipation
for TO-263 packages for different ambient temperatures,
assuming
θ
JA is 35˚C/W and the maximum junction tempera-
ture is 125˚C.
20031032
FIGURE 5.
θ
JA vs Copper (1 Ounce) Area for TO-263
package
20031033
FIGURE 6. Maximum power dissipation vs ambient
temperature for TO-263 package
www.national.com
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