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TPS54872 Fiches technique(PDF) 7 Page - Texas Instruments

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No de pièce TPS54872
Description  8-A OUTPUT 4-V TO 6-V INPUT TRACKING /TERMINATION SYNCHRONOUS PWM SWITCHER WITH INTEGRATED FETS
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS54872 Fiches technique(HTML) 7 Page - Texas Instruments

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TPS54872
SLVS436C − JULY 2002 − REVISED FEBRUARY 2005
www.ti.com
7
TYPICAL CHARACTERISTICS
Figure 1
0
10
20
30
40
50
60
−40
−15
10
35
60
85
110
135
VI = 5 V,
IO = 8 A
DRAIN-SOURCE
ON-STATE RESISTANCE
vs
JUNCTION TEMPERATURE
TJ − Junction Temperature − °C
Figure 2
250
350
450
550
650
750
−40
0
25
85
125
TJ − Junction Temperature − °C
INTERNALLY SET
OSCILLATOR FREQUENCY
vs
JUNCTION TEMPERATURE
RT = Open
Figure 3
200
300
400
500
600
700
800
−40
0
25
85
125
TJ − Junction Temperature − °C
EXTERNALLY SET
OSCILLATOR FREQUENCY
vs
JUNCTION TEMPERATURE
Figure 4
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0
1
2
3
4
56
78
IL − Load Current − A
DEVICE POWER LOSSES
vs
LOAD CURRENT
TJ = 125°C
fs = 700 kHz
VI = 5 V
Figure 5
2.75
2.90
3.05
3.20
3.35
3.50
3.65
−40
0
25
85
125
TJ − Junction Temperature − °C
INTERNAL SLOW-START TIME
vs
JUNCTION TEMPERATURE
3.80
Figure 6
−20
0
20
40
60
80
100
120
140
1
100
1 k
1 M
−200
−180
−160
−140
−120
−100
−80
−60
−40
−20
0
10
10 k
100 k
10 M
f − Frequency − Hz
ERROR AMPLIFIER
OPEN LOOP RESPONSE
Phase
Gain
RL = 10 kΩ,
CL = 160 pF,
TA = 25°C


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