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| 型號： | TPS54312PWPR |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 260K |
| 代理商： | TPS54312PWPR |
TPS54611, TPS54612, TPS54613
TPS54614, TPS54615, TPS54616
SLVS400A
–
AUGUST 2001
–
REVISED JANUARY 2002
10
www.ti.com
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
–
–
k
550
INTERNALLY SET OSCILLATOR
FREQUENCY
vs
JUNCTION TEMPERATURE
750
85
125
650
350
250
TJ
–
Junction Temperature
–
°
C
SYNC
≥
2.5 V
SYNC
≤
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 = 33 V
VI = 50 V
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