SLVSBN0 – MARCH 2013
TYPICAL CHARACTERISTICS (continued)
BOOT-SW UVLO vs JUNCTION TEMPERATURE
2.6
2.5
2.4
V
I
- BOOT-PH (V)
2.3
V
IN
(V)
2.2
2.1
2.0
BOOT-PH UVLO Falling
BOOT-PH UVLO Rising
INPUT VOLTAGE UVLO vs JUNCTION TEMPERATURE
4.5
4.4
4.3
4.2
4.1
4.0
3.9
UVLO Start Switching
UVLO Stop Switching
1.9
1.8
±50
±25
0
25
50
75
100
125
150
C043
3.8
3.7
±50
±25
0
25
50
75
100
125
150
C044
T
J
- Junction Temperature (ƒC)
T
J
- Junction Temperature (ƒC)
Figure 19.
SOFT-START TIME vs SWITCHING FREQUENCY
10
9
8
Soft-Start Time (ms)
7
V
IN
(V)
6
5
12 V, 25
ƒC
12 V, 25 C
5.6
5.5
5.4
5.3
5.2
5.1
Figure 20.
5 V START and STOP VOLTAGE
Start
Stop
4
3
2
1
0
100
300
500
700
900
1100
1300
1500
1700
1900
2100
2300
2500
C045
5
4.9
4.8
4.7
4.6
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
Dropout
Voltage
Dropout
Voltage
0.4
0.45
0.5
C046
Output Current (A)
Switching Frequency (kHz)
Figure 21.
Figure 22.
Copyright © 2013, Texas Instruments Incorporated
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