TPS54418_17 Datasheet, PDF (9/42 Pages) Texas Instruments – 2.95-V to 6-V Input, 4-A Output, 2-MHz , Synchronous Step-Down Switcher With Integrated FETs (SWIFT)

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Typical Characteristics (continued)
-1
-1.2
-1.4
-1.6
V_IN = 5 V
-1.8
-2
-2.2
-2.4
-2.6
-2.8
-3
-50 -25
0
25
50
75 100 125 150
T_J - Junction Temperature - °C
Figure 13. Charge Current vs Junction Temperature
3
2.9
2.8
2.7
UVLO Start Switching
2.6
2.5
2.4
UVLO Stop Switching
2.3
2.2
2.1
2
-50 -25
0
25
50
75 100 125 150
T_J - Junction Temperature - °C
Figure 15. Input Voltage vs Junction Temperature
3
T_J = 25°C
2.5
2
1.5
1
0.5
0
3
3.5
4
4.5
5
5.5
6
V_IN - Input Voltage - V
Figure 17. Shutdown Supply Current vs Input Voltage
TPS54418
SLVS946D – SEPTEMBER 2009 – REVISED DECEMBER 2014
105
103
101
V_IN = 5 V
99
97
95
93
91
89
87
85
-50 -25
0
25
50
75 100 125 150
T_J - Junction Temperature - °C
Figure 14. Discharge Current vs Junction Temperature
3
V_IN = 3.3 V
2.5
2
1.5
1
0.5
0
-50 -25
0
25
50
75 100 125 150
T_J - Junction Temperature - °C
Figure 16. Shutdown Supply Current vs Junction
Temperature
400
390 ^VIN ^{= 3.3 V}
380
370
360
350
340
330
320
310
300
-50 -25
0
25
50
75 100 125 150
T_J - Junction Temperature - °C
Figure 18. Supply Current vs Junction Temperature
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