TPS54310-EP
SLVS818–APRIL 2008 ..................................................................................................................................................................................................... www.ti.com
PERFORMANCE GRAPHS
EFFICIENCY
vs
OUTPUT CURRENT
OUTPUT VOLTAGE
vs
LOAD CURRENT
LOOP RESPONSE
100
95
135
90
3.4
3.38
3.36
3.34
60
40
20
V = 5 V
I
V = 4 V
I
T
= 25°C
A
V = 5 V
I
Phase
90
85
V = 6 V
I
45
Gain
3.32
3.3
80
75
0
0
T
A
= 25°C
3.28
3.26
3.24
−45
−20
70
65
−90
1 M
−40
0
1
2
3
4
5
100
1 k
10 k
100 k
0
1
2
3
4
5
I
− Output Current − A
I
− Load Current − A
f − Frequency − Hz
O
L
Figure 13.
Figure 14.
Figure 15.
OUTPUT RIPPLE VOLTAGE
LOAD TRANSIENT RESPONSE
SLOW-START TIMING
V = 5 V
40 µs/div
V (AC)
O
50 mV/div
I
V
(AC)
O
V 2 V/div
I
10 mV/div
V
O
2 V/div
V
5 V/div
PWRGD
I
O
V = 5 V
I
2 A/div
I
O
= 3 A
400 ns/div
1 ms/div
Figure 16.
Figure 17.
Figure 18.
AMBIENT TEMPERATURE
vs
LOAD CURRENT
125
115
105
95
V
= 5 V
I
85
V
= 3.3 V
†
I
75
65
Safe Operating Area
55
45
35
25
0
1
2
3
4
I
− Load Current − A
L
†
Safe operating area is applicable to the test board conditions
listed in the dissipation rating table section of this data sheet.
Figure 19.
12
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