TPS54560
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SLVSBN0 –MARCH 2013
TYPICAL CHARACTERISTICS (continued)
BOOT-SW UVLO vs JUNCTION TEMPERATURE
INPUT VOLTAGE UVLO vs JUNCTION TEMPERATURE
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
4.5
BOOT-PH UVLO Falling
BOOT-PH UVLO Rising
UVLO Start Switching
UVLO Stop Switching
4.4
4.3
4.2
4.1
4.0
3.9
3.8
3.7
œ50
œ25
0
25
50
75
100
125
150
œ50
œ25
0
25
50
75
100
125
150
C043
C044
TJ - Junction Temperature (°C)
TJ - Junction Temperature (°C)
Figure 19.
Figure 20.
SOFT-START TIME vs SWITCHING FREQUENCY
5 V START and STOP VOLTAGE
5.6
5.5
5.4
5.3
5.2
5.1
5
10
9
8
7
6
5
4
3
2
1
0
12 V, 25 °C
12 V, 25
Start
Stop
Dropout
Voltage
4.9
4.8
4.7
4.6
Dropout
Voltage
0
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
C046
Output Current (A)
C045
Switching Frequency (kHz)
Figure 21.
Figure 22.
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