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LM2746MXAX Datasheet(PDF) 23 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM2746MXAX
Description  Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller
PDF  24 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2746MXAX Datasheet(HTML) 23 Page - National Semiconductor (TI)

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Example Circuits (Continued)
PART
PART NUMBER
TYPE
PACKAGE
DESCRIPTION
VENDOR
U1
LM2746
Synchronous
Controller
TSSOP-14
NSC
Q1
FDS6898A
Dual N-MOSFET
SO-8
20V, 10m
Ω@ 4.5V,
16nC
Fairchild
D1
MBR0520LTI
Schottky Diode
SOD-123
L1
DO3316P-332
Inductor
3.3µH, 5.4Arms 15m
Ω
Coilcraft
C
IN1
16SP100M
Aluminum
Electrolytic
10mm x 6mm
100µF, 16V, 2.89Arms
Sanyo
C
O1
6SP220M
Aluminum
Electrolytic
10mm x 6mm
220µF, 6.3V 3.1Arms
Sanyo
C
CC,CBOOT,
C
IN2, CO2
VJ1206Y104KXXA
Capacitor
1206
0.1µF, 10%
Vishay
C
C3
VJ0805Y222KXXA
Capacitor
805
2200pF, 10%
Vishay
C
SS
VJ0805A123KXAA
Capacitor
805
12nF, 10%
Vishay
C
C2
VJ0805Y332KXXA
Capacitor
805
3300pF 10%
Vishay
C
C1
VJ0805A820KXAA
Capacitor
805
82pF, 10%
Vishay
R
FB2
CRCW08051002F
Resistor
805
10.0k
Ω 1%
Vishay
R
FB1
CRCW08052211F
Resistor
805
2.21k
Ω 1%
Vishay
R
FADJ
CRCW08051103F
Resistor
805
110k
Ω 1%
Vishay
R
C2
CRCW08052611F
Resistor
805
2.61k
Ω 1%
Vishay
R
CS
CRCW08054121F
Resistor
805
4.12 k
Ω 1%
Vishay
R
CC
CRCW080510R0F
Resistor
805
10.0
Ω 1%
Vishay
R
C1
CRCW08051272F
Resistor
805
12.7k
Ω 1%
Vishay
R
PULL-UP
CRCW08051003J
Resistor
805
100k
Ω 5%
Vishay
20147734
FIGURE 18. 12V to 3.3V @ 4A, f
SW = 300kHz
www.national.com
23



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