LP3961 Datasheet, PDF (14/20 Pages) National Semiconductor (TI) – 800mA Fast Ultra Low Dropout Linear Regulators

Applications Information (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 8. SCENARIO C, θ_JA = 92˚C/W
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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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FIGURE 9. SCENARIO D, θ_JA = 83˚C/W
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