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LM2743 Datenblatt(PDF) 7 Page - Texas Instruments

Teilenummer LM2743
Bauteilbeschribung  Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller
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Hersteller  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
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LM2743 Datenblatt(HTML) 7 Page - Texas Instruments

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background image
2V/div
1V/div
5V/div
100 ns/DIV
LG
SW
HG
2V/div
1V/div
5V/div
100 ns/DIV
HG
SW
LG
0
0.4 0.8 1.2 1.6
2
2.4 2.8 3.2 3.6
4
1.200
1.201
1.202
1.203
1.204
1.205
1.206
1.207
1.208
1.209
1.210
OUTPUT CURRENT (A)
TEMPERATURE (
oC)
-55 -35 -15
85 105 125
5
25
45
65
520
540
560
580
600
620
640
TEMPERATURE (
oC)
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
-40 -25 -10 5
80 95 110 125
20 35 50 65
TEMPERATURE (
oC)
-40 -25 -10 5
80 95 110125
20 35 50 65
23.9
24
24.1
24.2
24.3
24.4
24.5
24.6
24.7
24.8
24.9
LM2743
www.ti.com
SNVS276F – MAY 2004 – REVISED JANUARY 2012
Typical Performance Characteristics (continued)
BOOT Pin Current
vs
Temperature for
Internal Reference Voltage
BOOT Voltage = 12V
vs
fSW = 300 kHz, FDS6898A FET, No-Load
Temperature
Frequency
Output Voltage
vs
vs
Temperature
Output Current
Switch Waveforms (HG Rising)
Switch Waveforms (HG Falling)
VCC = 3.3V, VIN = 5V, VOUT = 1.2V
VCC = 3.3V, VIN = 5V, VOUT = 1.2V
IOUT = 4A, CSS = 12nF, fSW = 300 kHz
IOUT = 4A, CSS = 12nF, fSW = 300 kHz
Copyright © 2004–2012, Texas Instruments Incorporated
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