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参数资料
| 型号： | TPS54972PWP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 16 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封装： | GREEN, PLASTIC, HTSSOP-28 |
| 文件页数： | 4/19页 |
| 文件大小： | 411K |
| 代理商： | TPS54972PWP |
1.245
1.247
1.249
1.251
1.253
1.255
1.257
0
2
4
6
8
10
Load
Regulation
IO – Output Current – A
fs = 700 kHz
VI = 3.3 V
VO = 1.25 V
1.245
1.246
1.247
1.248
1.249
1.25
1.251
1.252
1.253
1.254
1.255
3
3.5
4
IO = 0 A
IO = 4.5 A
IO = 9 A
fs = 700 kHz
VI = 3.3 V
VO = 1.25 V
VI – Input V oltage – V
Line
Regulation
50
55
60
65
70
75
80
85
90
95
100
0
1
2
3
4
5
6
7
8
9
10
IO – Output Current – A
Ef
ficiency
–
%
fs = 700 kHz
VI = 3.3 V
VO = 1.25 V
VI = 3.3 V
VO = 1.25 V
2.25 A to 6.75 A
–
Output
V
oltage
–
50
mV/div
V
O
t – Time – s/div
–
Output
Current
–
2
A/div
I O
–
Input
V
oltage
1V/div
V
I
t – Time – 2.5 s/div
VI = 3.3 V
VO = 1.25 V
–
Output
voltage
–
500
mV/div
V
O
t – Time – 1 s/div
Output
Ripple
V
oltage
–
10
mV/div
fs = 700 kHz,
IO =9 A,
VI = 3.3 V,
VO = 1.25 V
–
Output
V
oltage
50mV/div
V
O
t – Time – 2.5 s/div
VI = 3.3 V
VO = 1.25 V
–
Output
Current
5A/div
I O
25
35
45
55
65
75
85
95
105
115
125
Ambient
T
emperature
–
C
°
IO – Output Current – A
0
2
4
6
8
10
12
14
16
TJ = 125°C,
fs = 700 kHz,
VI = 5 V,
VO = 1.25 V
TPS54972
SLVS437B – AUGUST 2002 – REVISED AUGUST 2010
www.ti.com
PERFORMANCE GRAPHS
TA = 25°C (unless otherwise noted)
EFFICIENCY
LOAD REGULATION
LINE REGULATION
vs
OUTPUT CURRENT
INPUT VOLTAGE
Figure 11.
Figure 12.
Figure 13.
OUTPUT RIPPLE VOLTAGE
TRANSIENT RESPONSE
SLOW-START TIMING
Figure 14.
Figure 15.
Figure 16.
AMBIENT TEMPERATURE
SOURCE-SINK
vs
TRANSIENT RESPONSE
OUTPUT CURRENT(1)
Figure 17.
Figure 18.
(1)
Safe operating area is applicable to the test board conditions listed in the dissipation rating table section of this data sheet.
12
Copyright 2002–2010, Texas Instruments Incorporated
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