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TPS54311MPWPREP Fiches technique(PDF) 7 Page - Texas Instruments

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No de pièce TPS54311MPWPREP
Description  3-V TO 6-V INPUT, 3-A OUTPUT SYNCHRONOUS-BUCK PWM SWITCHER WITH INTEGRATED FETs
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS54311MPWPREP Fiches technique(HTML) 7 Page - Texas Instruments

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TYPICAL CHARACTERISTICS
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
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
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
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
OUTPUT VOLTAGE REGULATION
vs
INPUT VOLTAGE
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
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
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
0
0.25
0.5
0.75
1
1.25
1.5
1.75
2
2.25
0
1
2
3
4
IL − Load Current − A
DEVICE POWER LOSSES
vs
LOAD CURRENT
TJ − 125°C,
fs = 700 kHz
VI = 3.3 V
VI = 5 V
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
TPS54311-EP, TPS54312-EP,
TPS54313-EP, TPS54314-EP,
TPS54315-EP, TPS54316-EP
SGLS376A – FEBRUARY 2007 – REVISED MARCH 2007
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
7
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