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| 型號： | TPS54611-Q1 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 3-V TO 6-V INPUT, 6-A OUTPUT SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs(SWIFT) |
| 中文描述： | 3 - V至6 V輸入，6 - A輸出同步降壓PWM開關帶有集成FET協(xié)會（SWIFT） |
| 文件頁數(shù)： | 9/18頁 |
| 文件大?。?/td> | 246K |
| 代理商： | TPS54611-Q1 |
SGLS266D OCTOBER 2004 REVISED DECEMBER 2004
www.ti.com
9
TYPICAL CHARACTERISTICS
Figure 1
0
20
40
60
80
100
120
40
0
25
85
125
IO = 3 A
VI = 3.3 V
TJ Junction Temperature
°
C
D
DRAIN-SOURCE ON-STATE
RESISTANCE
vs
JUNCTION TEMPERATURE
Figure 2
0
20
40
60
80
100
40
0
25
85
125
IO = 3 A
VI = 5 V
TJ Junction Temperature
°
C
D
DRAIN-SOURCE ON-STATE
RESISTANCE
vs
JUNCTION TEMPERATURE
Figure 3
450
40
0
25
f
550
INTERNALLY SET OSCILLATOR
FREQUENCY
vs
JUNCTION TEMPERATURE
750
85
125
650
350
250
TJ Junction Temperature
°
C
FSEL
≥
2.5 V
FSEL
≤
0.8 V
Figure 4
400
40
0
25
f
500
EXTERNALLY SET OSCILLATOR
FREQUENCY
vs
JUNCTION TEMPERATURE
800
85
125
700
300
200
TJ Junction Temperature
°
C
600
RT = 68 k
RT = 100 k
RT = 180 k
Figure 5
0.889
40
0
25
Vr
VOLTAGE REFERENCE
vs
JUNCTION TEMPERATURE
0.895
85
125
0.893
0.887
0.885
TJ Junction Temperature
°
C
0.891
Figure 6
0.8850
0.8870
0.8890
0.8910
0.8930
0.8950
3
4
5
6
f = 350 kHz
TA = 85
°
C
VI Input Voltage V
VO
OUTPUT VOLTAGE REGULATION
vs
INPUT VOLTAGE
Figure 7
f Frequency Hz
60
40
0
0
10
100
1 k
10 k 100 k
1 M
G
80
100
ERROR AMPLIFIER
OPEN LOOP RESPONSE
140
10 M
120
20
20
P
0
20
40
60
80
100
120
140
160
180
200
RL= 10 k
,
CL = 160 pF,
TA = 25
°
C
Phase
Gain
Figure 8
TJ Junction Temperature
°
C
3.35
3.20
2.90
40
0
25
85
I
3.50
3.65
INTERNAL SLOW-START TIME
vs
JUNCTION TEMPERATURE
125
3.80
3.05
2.75
Figure 9
IL Load Current A
2
1.5
0.5
0
1
2
3
4
5
6
D
2.5
3
DEVICE POWER LOSSES
vs
LOAD CURRENT
5
7
8
3.5
1
0
4
4.5
TJ = 125
°
C
FS = 700 kHz
VI = 3.3 V
VI = 5.0 V
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