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參數資料
| 型號： | TPS54974PWPG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 16 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | GREEN, PLASTIC, HTSSOP-28 |
| 文件頁數： | 19/21頁 |
| 文件大小： | 743K |
| 代理商： | TPS54974PWPG4 |
www.ti.com
TYPICAL CHARACTERISTICS
0
5
10
15
20
25
-40
0
25
85
125
TJ - Junction Temperature - °C
Drain
Source
On-State
Reststance
-
m
VIN = 3.6 V
PVIN = 2.5 V
IO = 9 A
250
350
450
550
650
750
-40
0
25
85
125
TJ - Junction Temperature - °C
f-
Internally
Set
Oscillator
Frequency
-
kHz
0
5
10
15
20
25
-40
0
25
85
125
Drain
Source
On-State
Reststance
-
m
TJ - Junction Temperature - °C
VIN = 3.0 V
PVIN = 2.5 V
IO = 9 A
200
300
400
500
600
700
800
-40
0
25
85
125
TJ - Junction Temperature - °C
f-
Externally
Set
Oscillator
Frequency
-
kHz
RT = 68 k
RT = 100 k
RT = 180 k
0.885
0.887
0.889
0.891
0.893
0.895
-40
0
25
85
125
TJ - Junction Temperature - °C
-V
oltage
Reference
-
V
ref
IL - Load Current - A
Device
Power
Losses
-
W
0
1
2
3
4
5
6
7
8
0
2
4
6
8
10
12
14
16
VI = 3.3 V
TJ = 125°C
-20
0
20
40
60
80
100
120
140
1
100
1 k
1 M
-200
-180
-160
-140
-120
-100
-80
-60
-40
-20
0
10
10 k
100 k
10 M
f - Frequency - Hz
Gain
-
dB
Phase
-
Degrees
Phase
Gain
RL = 10 k,
CL = 160 pF,
TA = 25°C
0.885
0.887
0.889
0.891
0.893
0.895
3
3.1
3.2
3.3
3.4
3.5
3.6
VI - Input Voltage - V
-
Output
V
oltage
Regulation
-
V
O
PVIN = 2.5 V
2.75
2.90
3.05
3.20
3.35
3.50
3.65
-40
0
25
85
125
TJ - Junction Temperature - °C
Internal
Slow-Start
Time
-
ms
3.80
VIN = 3.3 V,
PVIN = 2.5 V
TPS54974
SLVS458B – JANUARY 2003 – REVISED FEBRUARY 2005
DRAIN-SOURCE
INTERNALLY SET
ON-STATE RESISTANCE
OSCILLATOR FREQUENCY
vs
JUNCTION TEMPERATURE
Figure 1.
Figure 2.
Figure 3.
EXTERNALLY SET
OSCILLATOR FREQUENCY
VOLTAGE REFERENCE
DEVICE POWER LOSSES
vs
JUNCTION TEMPERATURE
LOAD CURRENT
Figure 4.
Figure 5.
Figure 6.
REFERENCE VOLTAGE
INTERNAL SLOW-START TIME
vs
ERROR AMPLIFIER
vs
INPUT VOLTAGE
OPEN-LOOP RESPONSE
JUNCTION TEMPERATURE
Figure 7.
Figure 8.
Figure 9.
7
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