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LM2743MTC датащи(PDF) 8 Page - Texas Instruments

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номер детали LM2743MTC
подробное описание детали  LM2743 Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI1 - Texas Instruments

LM2743MTC датащи(HTML) 8 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
SNVS276H – APRIL 2004 – REVISED OCTOBER 2015
www.ti.com
Typical Characteristics (continued)
fSW = 300 kHz
FDS6898A FET
No-Load
Figure 7. BOOT Pin Current vs Temperature for BOOT
Figure 8. Internal Reference Voltage vs Temperature
Voltage = 12 V
Figure 9. Frequency vs Temperature
Figure 10. Output Voltage vs Output Current
VCC = 3.3 V
VIN = 5 V
VOUT = 1.2 V
VCC = 3.3 V
VIN = 5 V
VOUT = 1.2 V
IOUT = 4 A
CSS = 12 nF
fSW = 300 kHz
IOUT = 4 A
CSS = 12 nF
fSW = 300 kHz
Figure 12. Switch Waveforms (HG Falling)
Figure 11. Switch Waveforms (HG Rising)
8
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Product Folder Links: LM2743


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