TPS54383, TPS54386
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SLUS774B–AUGUST 2007–REVISED OCTOBER 2007
TYPICAL CHARACTERISTICS (continued)
SOFT START TIME
vs
JUNCTION TEMPERATURE
SWITCHING FREQUENCY (300 kHz)
vs
JUNCTION TEMPERATURE
3.5
3.0
2.5
2.0
1.5
350
V
BP = 5.25 V
VBP = 5.25 V
330
310
290
270
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
TJ - Junction Temperature - °C
TJ - Junction Temperature - °C
Figure 5.
Figure 6.
SWITCHING FREQUENCY (600 kHz)
FEEDBACK BIAS CURRENT
vs
JUNCTION TEMPERATURE
vs
JUNCTION TEMPERATURE
680
660
640
5
VBP = 5.25 V
3
1
620
600
580
-1
-3
-5
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
TJ - Junction Temperature - °C
TJ - Junction Temperature - °C
Figure 7.
Figure 8.
6
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