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CA3282AS1 Datasheet(PDF) 8 Page - Intersil Corporation |
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CA3282AS1 Datasheet(HTML) 8 Page - Intersil Corporation |
8 / 10 page 8 The number of output drivers ON and conducting (m) may be from 1 to n. (i.e., For all 8 output drivers conducting, m = n = 8.) Maximum temperature, dissipation and current ratings must be observed. The drain current vs case temperature may be plotted for any value of m from 1 to 8, provided drain currents remain equal. The curve of Figure 5 illustrates the boundary limits for tem- perature and dissipation. Figure 6 shows the maximum cur- rent for all 8 outputs ON with equal current plotted versus Case Temperature, TC. Boundary conditions relate to the Absolute Maximum Ratings as defined in the data sheet. FIGURE 5. DISSIPATION DERATING CURVE FIGURE 6. CURRENT vs CASE (TAB) TEMPERATURE, ALL OUTPUTS ON WITH EQUAL CURRENT 2 4 6 8 10 12 0 -40 -25 0 25 50 75 100 125 150 AMBIENT TEMPERATURE (oC) CA3282 WITH EXT. 6oC/W HEAT SINK ( θJA = 9oC/W) CA3282 WITH INFINITE HEAT SINK ( θJC = 3oC/W) CA3282 WITH NO HEAT SINK ( θJA = 45oC/W) 50 75 100 125 150 0.0 0.5 1.0 CASE TEMPERATURE (oC) IMAX ALL ON DISSIPATION LIMITED MAX 150 T C – 8 θ JC r DS ON () () × × ----------------------------------------------------- = MAX. ALL ON CURRENT LIMITED (0.625A EA. X 8 = 5A TOTAL CURRENT) rDS(ON) = 1Ω THERMAL RESISTANCE, θJC = 3oC/W CA3282 |
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