Datasheet

TPS54611, TPS54612
TPS54613, TPS54614
TPS54615, TPS54616
SLVS400C − AUGUST 2001 − REVISED APRIL 2005
www.ti.com
12
PERFORMANCE GRAPHS
Figure 13
V
I
= 5 V
V
I
= 3.3V
I
L
− Load Current − A
70
0123 456
Efficiency − %
80
EFFICIENCY
vs
LOAD CURRENT
100
78 910
90
60
50
Figure 14
V
I
= 5 V
V
I
= 3.3V
1
0.99
0.98
0123456
− Output Voltage − V
1.01
OUTPUT VOLTAGE
vs
LOAD CURRENT
1.03
78910
1.02
0.97
V
O
I
L
− Load Current − A
Figure 15
Phase
Gain
f − Frequency − Hz
20
10
−10
10 100 1 k 10 k 100 k
Gain − dB
30
40
LOOP RESPONSE
60
50
0
−20
Phase − Degrees
180
135
90
45
0
Figure 16
40
t − Time − µs
TRANSIENT RESPONSE
300
020
350
0
250
50
150
60 80 100 120 140 160 180 200
100
200
400
− Output Voltage − mV
V
O
0
2
4
6
8
10
12
14
16
− Output Current − A
I
O
Figure 17
4
t − Time − µs
START-UP WAVEFORMS
6
02
7
0
5
1
3
6 8 10 12 14 16 18 20
2
4
8
− Input Voltage − VV
I
Figure 18
40
t − Time − µs
OUTPUT RIPPLE VOLTAGE
60
020
70
0
50
10
30
60 80 100 120 140 160 180 200
20
40
80
− Output Voltage − mVV
O
Figure 19
75
65
35
0123456
− Ambient Temperature −
85
95
AMBIENT TEMPERATURE
vs
LOAD CURRENT
125
78
105
45
25
C
°
T
A
I
L
− Load Current − A
T
J
= 125°C
F
S
= 700 kHz
V
I
= 3.3 V
V
I
= 5 V
55
115
Safe Operating Area