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FDD3860 Datasheet(PDF) 5 Page - Fairchild Semiconductor |
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FDD3860 Datasheet(HTML) 5 Page - Fairchild Semiconductor |
5 / 6 page www.fairchildsemi.com 5 ©2008 Fairchild Semiconductor Corporation FDD3860 Rev.C1 Figure 13. Transient Thermal Response Curve 10 -6 10 -5 10 -4 10 -3 10 -2 10 -1 1 0.001 0.01 0.1 1 2 DUTY CYCLE-DESCENDING ORDER t, RECTANGULAR PULSE DURATION (sec) D = 0.5 0.2 0.1 0.05 0.02 0.01 SINGLE PULSE RθJC = 1.8 o C/W I = I 25 FOR TEMPERATURES ABOVE 25oC DERATE PEAK CURRENT AS FOLLOWS: 150 T C – 125 ------------------------ TC = 25 oC PDM t1 t2 NOTES: DUTY FACTOR: D = t1/t2 PEAK TJ = PDM x ZθJC x RθJC + TC 10 -4 10 -3 10 -2 10 -1 110 100 1000 0.001 0.01 0.1 1 SINGLE PULSE RθJA = 40 o C/W (Note 1a) DUTY CYCLE-DESCENDING ORDER t, RECTANGULAR PULSE DURATION (sec) D = 0.5 0.2 0.1 0.05 0.02 0.01 2 PDM t1 t2 NOTES: DUTY FACTOR: D = t1/t2 PEAK TJ = PDM x ZθJA x RθJA + TA Figure 14. Transient Thermal Response Curve Figure 15. 10 -4 10 -3 10 -2 10 -1 110 100 1000 0.0001 0.001 0.01 0.1 1 SINGLE PULSE RθJA = 96 o C/W (Note 1b) DUTY CYCLE-DESCENDING ORDER t, RECTANGULAR PULSE DURATION (sec) D = 0.5 0.2 0.1 0.05 0.02 0.01 2 PDM t1 t2 NOTES: DUTY FACTOR: D = t1/t2 PEAK TJ = PDM x ZθJA x RθJA + TA Transient Thermal Response Curve Typical Characteristics T J = 25°C unless otherwise noted |
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