TPS40192 Datasheet, PDF (8/35 Pages) Texas Instruments – 4.5V TO 18V INPUT 10 PIN SYNCHRONOUS BUCK CONTROLLER WITH POWER GOOD

TPS40192, TPS40193
SLUS719 – MARCH 2007
TYPICAL CHARACTERISTICS (continued)
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POWERGOOD THRESHOLD VOLTAGE
vs
JUNCTION TEMPERATURE
680
Overvoltage
660
640
620
600
580
560
540 ^Undervoltage
520
500
−40 −25 −10 5 20 35 50 65 80 95 110 125
T_J − Junction Temperature − °C
Figure 9.
SHUTDOWN CURRENT
vs
INPUT VOLTAGE
100
V_ENABLE < 0.6 V
90
80
70
60
50
40
30
20
10
0
4
6
8
10 12 14 16 18
V_VDD − Input Voltage − V
Figure 10.
RELATIVE OVERCURRENT TRIP POINT
vs
FREEWHEEL TIME
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0.4
0.6 0.8
1.0
1.2
1.4 1.6
1-D - Freewheel Time - ms
Figure 11.
8
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