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參數資料
| 型號： | TPS54227DDA |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 4.7 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | PLASTIC, MS-012BA, SOP-8 |
| 文件頁數： | 2/19頁 |
| 文件大小： | 323K |
| 代理商： | TPS54227DDA |
t - Time - 1 ms
EN (10 V/div)
VREG5 (5 V/div)
Vout (0.5 V/div)
V
= 3.3 V
O
V
= 1.8 V
O
V
= 2.5 V
O
40
50
60
70
80
90
100
Efficiency
-
%
0
0.5
1
1.5
2
I - Output Current - A
O
V
= 1.5 V
O
V
= 1.8 V
O
V
= 3.3 V
O
V
= 2.5 V
O
V
= 1.05 V
O
V
= 5 V
O
400
450
500
550
600
650
700
750
800
850
900
fsw
-
Switching
Frequency
-
kHz
0
5
10
15
20
V - Input Voltage - V
I
V
= 1.2 V
O
400
450
500
550
600
650
700
750
800
850
900
fsw
-
Switching
Frequency
-
kHz
0
0.5
1
1.5
2
I - Output Current - A
O
V
= 3.3 V
O
V
= 1.8 V
O
V
= 1.05 V
O
V = 1.05 V
O
V (10 mV/div)
O
SW (5 V/div)
t - Time - 400 ns
0.750
0.755
0.760
0.765
0.770
0.775
0.780
-50
0
50
100
150
T - Junction Temperature - C
J
o
V
-Vfb
V
oltage
-
V
FB
TH
SLVSAU2
– MAY 2011
TYPICAL CHARACTERISTICS (continued)
Figure 7. START-UP WAVE FORM
Figure 8. EFFICIENCY vs OUTPUT CURRENT
Figure 9. SWITCHING FREQUENCY vs INPUT VOLTAGE
Figure 10. SWITCHING FREQUENCY vs
OUTPUT CURRENT
Figure 11. Vfb VOLTAGE vs JUNCTION TEMPERATURE
Figure 12. VOLTAGE RIPPLE AT OUTPUT (IO = 2 A)
10
Copyright
2011, Texas Instruments Incorporated
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| TPS54227DDAR | 功能描述:直流/直流開關調節器 4.5-18Vin,2A Sync Step Down Cnvrtr RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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