Datasheet

Ivin - Supply Current - Am
480
490
500
510
520
530
540
550
560
570
580
-50 -25 0 25 50 75 100 125 150
T - Junction Temperature - °C
J
V = 5 V
IN
V = 3.3 V
IN
0
0.5
1
1.5
2
2.5
3
V = 5 V
IN
V = 3.3 V
IN
-50 -25 0 25 50 75 100 125 150
T - Junction Temperature - °C
J
Iq - Shutdown Supply Current - Am
EN - Threshold - V
1.18
1.19
1.2
1.21
1.22
1.23
1.24
1.25
1.26
1.27
1.28
1.29
1.3
1.31
1.32
EN Rising, Vin = 3.3 V
EN Rising, Vin = 5 V
EN Falling, Vin = 3.3 V
EN Falling, Vin = 5 V
-50 -25 0 25 50 75 100 125 150
T - Junction Temperature - °C
J
EN - Pin Current - Am
-4
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
0
EN Pin Current @ Vin = 3.3 V, VEN = Threshold + 50 mV
EN Pin Current @ Vin = 5 V, VEN = Threshold + 50 mV
EN Pin Current @ Vin = 3.3 V, VEN = Threshold - 50 mV
EN Pin Current @ Vin = 5 V, VEN = Threshold - 50 mV
-50 -25 0 25 50 75 100 125 150
T - Junction Temperature - °C
J
V - Voltage Reference - V
ref
0.594
0.595
0.596
0.597
0.598
0.599
0.6
0.601
0.602
0.603
0.604
0.605
0.606
-50 -25 0 25 50 75 100 125 150
T - Junction Temperature - °C
J
V = 5 V
IN
V = 3.3 V
IN
-50 -25 0 25 50 75 100 125 150
T - Junction Temperature - °C
J
RDSON - Top and Bottom MOSFET - W
20
25
30
35
40
45
50
55
60
High Side Rdson Vin = 3.3 V
Low Side Rdson Vin = 3.3 V
High Side Rdson Vin = 5 V
Low Side Rdson Vin = 5 V
TPS54478
www.ti.com SLVSAS2 –JUNE 2011
TYPICAL CHARACTERISTICS CURVES
SHUTDOWN SUPPLY CURRENT vs TEMPERATURE VIN SUPPLY CURRENT vs TEMPERATURE
Figure 1. Figure 2.
EN PIN VOLTAGE vs TEMPERATURE EN PIN CURRENT vs TEMPERATURE
Figure 3. Figure 4.
VOLTAGE REFERENCE vs
TEMPERATURE MOSFET Rdson vs TEMPERATURE
Figure 5. Figure 6.
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