TPS54383, TPS54386
www.ti.com
SLUS774B–AUGUST 2007–REVISED OCTOBER 2007
TYPICAL CHARACTERISTICS
QUIESCENT CURRENT (NON-SWITCHING)
SHUTDOWN CURRENT
vs
JUNCTION TEMPERATURE
vs
JUNCTION TEMPERATURE
2.1
140
120
100
80
VBP = 5.25 V
VPVDDx = 28 V
2.0
1.9
VPVDDx = 12 V
1.8
1.7
60
40
V
PVDDx = 4.5 V
1.6
1.5
20
0
-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 1.
Figure 2.
UNDERVOLTAGE LOCKOUT THRESHOLD
ENABLE THRESHOLDS
vs
JUNCTION TEMPERATURE
vs
JUNCTION TEMPERATURE
4.2
1.25
EN(Off)
4.1
4.0
1.23
1.21
UVLO(On)
3.9
3.8
EN(On)
UVLO(Off)
1.19
1.17
1.15
3.7
3.6
-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 3.
Figure 4.
Copyright © 2007, Texas Instruments Incorporated
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