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参数资料
| 型号： | TPS54615PWPRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封装： | GREEN, PLASTIC, HTSSOP-28 |
| 文件页数： | 21/23页 |
| 文件大小： | 706K |
| 代理商： | TPS54615PWPRG4 |
TPS54611, TPS54612
TPS54613, TPS54614
TPS54615, TPS54616
SLVS400C AUGUST 2001 REVISED APRIL 2005
www.ti.com
7
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
Drain-Source
On-State
Resistance
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
Drain-Source
On-State
Resistance
DRAIN-SOURCE ON-STATE
RESISTANCE
vs
JUNCTION TEMPERATURE
Figure 3
450
40
0
25
f
Internally
Set
Oscillator
Frequency
kHz
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
Externally
Set
Oscillator
Frequency
kHz
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
V
oltage
Reference
V
VOLTAGE REFERENCE
vs
JUNCTION TEMPERATURE
0.895
85
125
0.893
0.887
0.885
TJ Junction Temperature °C
0.891
V
ref
Figure 6
0.8850
0.8870
0.8890
0.8910
0.8930
0.8950
34
56
f = 350 kHz
TA = 85°C
VI Input Voltage V
Output
V
oltage
Regulation
V
OUTPUT VOLTAGE REGULATION
vs
INPUT VOLTAGE
V O
Figure 7
f Frequency Hz
60
40
0
10
100
1 k
10 k 100 k 1 M
Gain
dB
80
100
ERROR AMPLIFIER
OPEN LOOP RESPONSE
140
10 M
120
20
Phase
Degrees
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
Internal
Slow-Start
Time
ms
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
01
2
3
4
5
6
Device
Power
Losses
W
2.5
3
DEVICE POWER LOSSES
vs
LOAD CURRENT
5
78
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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