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TPS54614 Fiches technique(PDF) 7 Page - Texas Instruments

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No de pièce TPS54614
Description  3-V TO 6-V INPUT, 6-A OUTPUT SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs (SWIFT)
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS54614 Fiches technique(HTML) 7 Page - Texas Instruments

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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
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
vs
JUNCTION TEMPERATURE
Figure 3
450
−40
0
25
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
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
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
34
56
f = 350 kHz
TA = 85°C
VI − Input Voltage − V
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
80
100
ERROR AMPLIFIER
OPEN LOOP RESPONSE
140
10 M
120
20
−20
0
−20
−40
−60
−80
−100
−120
−140
−160
−180
−200
RL= 10 kΩ,
CL = 160 pF,
TA = 25°C
Phase
Gain
Figure 8
TJ − Junction Temperature − °C
3.35
3.20
2.90
−40
0
25
85
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
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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