LP3872 Datasheet, PDF (15/18 Pages) National Semiconductor (TI) – 1.5A Fast Ultra Low Dropout Linear Regulators

Application Hints (Continued)
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FIGURE 5. θ_JA vs Copper(1 Ounce) Area for SOT-223
package
The following figures show different layout scenarios for
SOT-223 package.
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FIGURE 6. SCENARIO A, θ_JA = 148˚C/W
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FIGURE 7. SCENARIO B, θ_JA = 125˚C/W
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