參數(shù)資料
型號(hào): MBR0520LTI
廠商: National Semiconductor Corporation
英文描述: DB-LM3S102 Daughterboard
中文描述: 同步降壓控制器,帶有預(yù)偏置啟動(dòng)和可選時(shí)鐘同步
文件頁(yè)數(shù): 22/23頁(yè)
文件大小: 1002K
代理商: MBR0520LTI
Example Circuits
(Continued)
PART
U1
PART NUMBER
LM2747
TYPE
Synchronous
Controller
Dual N-MOSFET
PACKAGE
TSSOP-14
DESCRIPTION
VENDOR
NSC
Q1
FDS6898A
SO-8
20V, 10 m
@
4.5V, 16
nC
Fairchild
D1
L1
C
IN
1
MBR0520LTI
DO3316P-332
16SP100M
Schottky Diode
Inductor
Aluminum
Electrolytic
Aluminum
Electrolytic
Capacitor
SOD-123
3.3 μH, 5.4Arms 15 m
100 μF, 16V, 2.89Arms
Coilcraft
Sanyo
10mm x 6mm
C
O
1
6SP220M
10mm x 6mm
220 μF, 6.3V 3.1Arms
Sanyo
C
CC
, C
BOOT,
C
IN
2, C
O
2
C
C3
C
SS
C
C2
C
C1
R
FB2
R
FB1
R
FADJ
R
C2
R
CS
R
CC
R
C1
R
PULL-UP
C
CLK
VJ1206Y104KXXA
1206
0.1 μF, 10%
Vishay
VJ0805Y222KXXA
VJ0805A123KXAA
VJ0805Y332KXXA
VJ0805A820KXAA
CRCW08051002F
CRCW08052211F
CRCW08051003F
CRCW08052611F
CRCW08054121F
CRCW080510R0F
CRCW08051272F
CRCW08051003J
VJ0805A560KXAA
Capacitor
Capacitor
Capacitor
Capacitor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Capacitor
0805
0805
0805
0805
0805
0805
0805
0805
0805
0805
0805
0805
0805
2200 pF, 10%
12 nF, 10%
3300 pF 10%
82 pF, 10%
10.0 k
1%
2.21 k
1%
100 k
1%
2.61 k
1%
4.12 k
1%
10.0
1%
12.7k
1%
100 k
5%
56 pF, 10%
Vishay
Vishay
Vishay
Vishay
Vishay
Vishay
Vishay
Vishay
Vishay
Vishay
Vishay
Vishay
Vishay
20150934
FIGURE 19. 12V to 3.3V
@
4A, f
SW
= 300kHz
L
www.national.com
22
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