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LM2744 Datasheet(PDF) 21 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM2744
Description  Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller with External Reference
PDF  22 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2744 Datasheet(HTML) 21 Page - National Semiconductor (TI)

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Example Circuits (Continued)
PART
PART NUMBER
TYPE
PACKAGE
DESCRIPTION
VENDOR
U
1
LM2744
Synchronous
Controller
TSSOP-14
NSC
Q
1
FDS6898A
Dual N-MOSFET
SO-8
20V, 10m
Ω@ 4.5V,
16nC
Fairchild
D
1
MBR0520LTI
Schottky Diode
SOD-123
L
1
DO3316P-332
Inductor
12.95 x 9.4 x
5.21mm
3.3µH, 5.4Arms 15m
Ω
Coilcraft
C
IN1
16SP100M
Aluminum
Electrolytic
10.0mm x 5.0mm 100µF, 16V 2.89Arms
Sanyo
C
O1
6SP220M
Aluminum
Electrolytic
10.0mm x 5.0mm 220µF, 6.3V 3.1Arms
Sanyo
C
BOOT, CIN2,
C
O2
VJ0805Y104KXXA
Capacitor
0805
0.1µF, 10%
Vishay
C
CC
VJ0805M104MXQ
Capacitor
0805
1µF, 20%
Vishay
C
C3
VJ0805Y222KXXA
Capacitor
0805
2200pF, 10%
Vishay
C
SS
VJ0805A123KXAA
Capacitor
0805
12nF, 10%
Vishay
C
C2
VJ0805Y272KXAA
Capacitor
0805
2700pF 10%
Vishay
C
C1
VJ0805A820KXAA
Capacitor
0805
82pF, 10%
Vishay
R
FB2
CRCW08051002F
Resistor
0805
10.0k
Ω 1%
Vishay
R
FB1
CRCW08054641F
Resistor
0805
4.64k
Ω 1%
Vishay
R
FADJ
CRCW08051103F
Resistor
0805
110k
Ω 1%
Vishay
R
C2
CRCW08052551F
Resistor
0805
2.55k
Ω 1%
Vishay
R
CS
CRCW08058450F
Resistor
0805
845
Ω 1%
Vishay
R
CC
CRCW080510R0F
Resistor
0805
10.0
Ω 1%
Vishay
R
C1
CRCW08051372F
Resistor
0805
13.7k
Ω 1%
Vishay
R
PULL-UP
CRCW08051003J
Resistor
0805
100k
Ω 5%
Vishay
20106034
FIGURE 16. 3.3V to 2.5V @ 2A, V
REF = 0.8V, FSW = 300kHz
www.national.com
21



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