LM2940S NSC [National Semiconductor], LM2940S Datasheet - Page 15

• Manufacturer Part Number: LM2940S
• Description: 1A Low Dropout Regulator
• Manufacturer: NSC [National Semiconductor]

HEATSINKING LLP PACKAGE PARTS
The value of θ
for the LLP package is specifically dependent
JA
on PCB trace area, trace material, and the number of layers
and thermal vias. It is recommended that a minimum of 6
thermal vias be placed under the center pad to improve ther-
mal performance.
For techniques for improving the thermal resistance and pow-
er dissipation for the LLP package, please refer to Application
Note AN-1187.
882241
FIGURE 6. Maximum Power Dissipation vs. T
for the
A
SOT-223 Package
15
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