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LM2743 Datasheet(PDF) 6 Page - Texas Instruments

Part # LM2743
Description  Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM2743 Datasheet(HTML) 6 Page - Texas Instruments

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TEMPERATURE (
oC)
-40 -25 -10 5
80 95 110 125
20 35 50 65
9.3
9.4
9.5
9.6
9.7
9.8
9.9
10
TEMPERATURE (
oC)
-40 -25 -10 5
80 95 110 125
20 35 50 65
5.9
6
6.1
6.2
6.3
6.4
6.5
6.6
6.7
0.05
0.25
0.45
0.65
0.85
FREQUENCY (MHz)
1.05
0
6
13
19
25
20
30
40
50
60
70
80
90
100
VIN = 12V
VIN = 5V
0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0
OUTPUT CURRENT (A)
0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0
OUTPUT CURRENT (A)
20
30
40
50
60
70
80
90
100
VIN = 3.3V
VIN = 12V
VIN = 5V
20
30
40
50
60
70
80
90
100
VIN = 3.3V
VIN = 12V
VIN = 5V
0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0
OUTPUT CURRENT (A)
LM2743
SNVS276F – MAY 2004 – REVISED JANUARY 2012
www.ti.com
Typical Performance Characteristics
Efficiency (VOUT = 1.2V)
Efficiency (VOUT = 2.5V)
VCC = 3.3V, fSW = 300 kHz
VCC = 3.3V, fSW = 300 kHz
VCC Operating Current plus BOOT Current
vs
Efficiency (VOUT = 3.3V)
Frequency
VCC = 5V, fSW = 300 kHz
FDS6898A FET (TA = 25°C)
BOOT Pin Current
BOOT Pin Current
vs
vs
Temperature for
Temperature for
BOOT Voltage = 3.3V
BOOT Voltage = 5V
fSW = 300 kHz, FDS6898A FET, No-Load
fSW = 300 kHz, FDS6898A FET, No-Load
6
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Copyright © 2004–2012, Texas Instruments Incorporated
Product Folder Links: LM2743


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