TPS54319_1 Datasheet, PDF (8/35 Pages) Texas Instruments – 2.95-V to 6-V Input, 3-A Output, 2-MHz, Synchronous Step-Down Switcher With Integrated FETs ( SWIFT™)

TPS54319
SLVSA83 – JUNE 2010
www.ti.com
TYPICAL CHARACTERISTICS CURVES (continued)
TRANSCONDUCTANCE (SLOW START) vs
JUNCTION TEMPERATURE
105
V_I = 3.3 V
100
95
90
85
80
75
70
65
60
55
-50 -25
0
25
50
75
100 125 150
T_J - Junction Temperature - °C
Figure 9.
EN PIN VOLTAGE vs TEMPERATURE
1.3
1.29
1.28
1.27
1.26
1.25
1.24
1.23
1.22
1.21
1.2
1.19
1.18
1.17
1.16
1.15
-50 -25
V_I = 3.3 V, rising
V_I = 3.3 V, falling
0
25
50
75
100 125 150
T_J - Junction Temperature - °C
Figure 10.
EN PIN CURRENT vs TEMPERATURE
-4.25
-4.35 ^{VI = 5 V,}
Ven = Threshold +50 mV
-4.45
-4.55
-4.65
-4.75
-4.85
-4.95
-5.05
-5.15
-50 -25
0
25
50
75
100 125 150
T_J - Junction Temperature - °C
Figure 11.
EN PIN CURRENT vs TEMPERATURE
-0.85
-0.95
V_I = 5 V,
Ven = Threshold -50 mV
-1.05
-1.15
-1.25
-1.35
-1.45
-1.55
-1.65
-50 -25
0
25
50
75
100 125 150
T_J - Junction Temperature - °C
Figure 12.
CHARGE CURRENT vs TEMPERATURE
-1.4
-1.6
-1.8
-2
-2.2
V_I = 5 V
-2.4
-2.6
-2.8
-3
-50 -30 -10 10 30 50 70 90 110 130 150
T_J - Junction Temperature - °C
Figure 13.
3
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
-50
INPUT VOLTAGE vs TEMPERATURE
UVLO Start Switching
UVLO Stop Switching
-25
0
25
50
75
100 125 150
T_J - Junction Temperature - °C
Figure 14.
8
Submit Documentation Feedback
Product Folder Link(s): TPS54319
Copyright © 2010, Texas Instruments Incorporated