Datasheet

0
1
2
3
4
5
6
7
8
9
10
100 300 500 700 900
1100 1300 1500 1700 1900 2100 2300 2500
Soft-Start Time (ms)
Switching Frequency (kHz)
C045
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
−50 −25 0 25 50 75 100 125 150
T
J
− Junction Temperature (°C)
V
IN
− (BOOT−SW) (dB)
BOOT-SW UVLO Falling
BOOT-SW UVLO Rising
G018
3.7
3.8
3.9
4
4.1
4.2
4.3
4.4
4.5
−50 −25 0 25 50 75 100 125 150
Tj − Junction Temperature (°C)
Input Voltage (V)
UVLO Start Switching
UVLO Stop Switching
G019
70
90
110
130
150
170
190
210
±50 ±25 0 25 50 75 100 125 150
I
VIN
(µA)
T
J
- Junction Temperature (C)
C041
70
90
110
130
150
170
190
210
0
V
IN
− Input Voltage (V)
V
IN
− Supply Current (µA)
G018
5 15 20 25 30 4035 4510
TPS54340
www.ti.com SLVSBK0B –OCTOBER 2012–REVISED MARCH 2014
Typical Characteristics (continued)
T
J
= 25°C
V
IN
= 12 V
Figure 19. V
IN
Supply Current vs Input Voltage
Figure 18. V
IN
Supply Current vs Junction Temperature
Figure 20. BOOT-SW UVLO vs Junction Temperature Figure 21. Input Voltage UVLO vs Junction Temperature
V
IN
= 12 V T
J
= 25°C
Figure 22. Soft-Start Time vs Switching Frequency
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