參數(shù)資料
型號(hào): LM2743
廠商: National Semiconductor Corporation
英文描述: N-Channel FET Synchronous Buck Regulator Controller for Conversion from 3.3V
中文描述: N溝道場效應(yīng)管同步降壓穩(wěn)壓控制器,用于從3.3V轉(zhuǎn)換
文件頁數(shù): 18/23頁
文件大?。?/td> 653K
代理商: LM2743
Example Circuits
(Continued)
PART
U
1
PART NUMBER
LM2743
TYPE
Synchronous
Controller
Dual N-MOSFET
PACKAGE
TSSOP-14
DESCRIPTION
VENDOR
NSC
Q
1
FDS6898A
SO-8
20V, 10m
@
4.5V,
16nC
Fairchild
D
1
L
1
MBR0520LTI
DO3316P-332
Schottky Diode
Inductor
SOD-123
3.3μH, 5.4Arms 15m
Coilcraft
C
IN
1
16SP100M
Aluminum
Electrolytic
100μF, 16V
Sanyo
2.89Arms
220μF, 6.3V 3.1Arms
C
O
1
6SP220M
Aluminum
Electrolytic
Capacitor
Sanyo
C
CC
, C
BOOT,
C
IN
2, C
O
2
C
C3
VJ1206Y104KXXA
1206
0.1μF, 10%
Vishay
VJ805Y222KXXA
VJ0805Y123KXXA
VJ805Y332KXXA
VJ0805A820KXAA
Capacitor
Capacitor
Capacitor
Capacitor
805
805
805
805
2200pF, 10%
12nF, 10%
3300pF 10%
82pF, 10%
Vishay
Vishay
Vishay
Vishay
C
SS
C
C2
C
C1
R
FB2
R
FB1
R
FADJ
R
C2
R
CS
R
CC
R
C1
R
PULL-UP
CRCW08051002F
CRCW08052211F
CRCW08051103F
CRCW08052611F
CRCW08057870F
CRCW080510R0F
CRCW08051272F
CRCW08051003J
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
805
805
805
805
805
805
805
805
10.0k
1%
2.21k
1%
110k
1%
2.61k
1%
787
1%
10.0
1%
12.7k
1%
100k
5%
Vishay
Vishay
Vishay
Vishay
Vishay
Vishay
Vishay
Vishay
20095234
FIGURE 14. 5V to 3.3V
@
4A, F
SW
= 300kHz
L
www.national.com
18
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