Datasheet

www.ti.com
t − Time − 1 µs/div
Output Ripple Voltage − 10 mV/div
f
s
= 700 kHz,
I
O
= 3 A,
V
I
= 5 V,
V
O
= 1.25 V
1.247
1.248
1.249
1.25
1.251
1.252
1.253
3 4 5 6
I
O
= 3 A
V
I
− Input Voltage − V
Line Regulation
I
O
= 0 A
f
s
= 700 kHz,
T
A
= 25°C,
V
O
= 1.25 V
I
O
= 1.5 A
t − Time − 25 ms/div
− Output Voltage − 50 mV/divV
O
− Output Current − 1 A/div
I
O
V
I
= 5 V,
V
O
= 1.25 V
0 A to
2.25 A
V
I
= 5 V,
V
O
= 1.25 V
t −Time − 2.5 ms/div
− Input Voltage − 2 V/divV
I
− Output Voltage − 500 mV/div
V
O
t − Time − 100 µs/div
− Output Voltage − 50 mV/divV
O
− Output Current − 1 A/div
I
O
V
I
= 5 V,
V
O
= 1.25 V
−1.5 A to 1.5 A
25
35
45
55
65
75
85
95
105
115
125
0 1 2 3 4
− Ambient Temperature −
I
L
− Load Current − A
C
°
T
A
Safe Operating Area
V
I
= 3.3 V
V
I
= 5 V
T
A
= 25°C,
V
O
= 1.25 V
(See Note)
TPS54372
SLVS430D – JUNE 2002 – REVISED FEBRUARY 2005
PERFORMANCE GRAPHS (continued)
LINE REGULATION
vs
INPUT VOLTAGE OUTPUT RIPPLE VOLTAGE
Figure 12. Figure 13.
TRANSIENT RESPONSE SLOW-START TIMING
Figure 14. Figure 15.
AMBIENT TEMPERATURE
SOURCE-SINK vs
TRANSIENT RESPONSE LOAD CURRENT
(1)
Figure 16.
(1) Safe operating area is applicable to the test
board conditions listed in the dissipation
rating table section of this data sheet.
Figure 17.
11