SC2542TETRT 查看數據表（PDF） - Semtech Corporation
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SC2542TETRT Datasheet PDF : 27 Pages
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POWER MANAGEMENT
Typical Applications Schematic
SC2542
FB1
R14
C13 C14
VIN+
C1 1uF/25V
1
C2 1uF/16V VCC 2
EN
3
SB
4
5
C4 12nF R6 41.2k
C6 1n F
6
R8 88.7k 7
C8
1uF/16V 8
R10
15K 9
C15
1uF /161V0
R12
0 11
2.2
12
13
VIN+
14
C17
Q1
U1
SC2542
VIN
VCC
EN
STBY
AGND
5VSBY
ROSC
PWRGD
28
275VSBYC3
26
R4
25
4. 7uF
73.2K
5VSBY
R5
10K
F B1
FB2 24
R7
41.2k C5 12nF
ERROUT1 ERROUT2 23
C7 1n F
MINSET1
SS1
I LI M1
BST1
DRVH1
PHASE1
MINSET2 22
R9 133k
SS2 21
C9 1uF/16V
ILIM2 20 R11
15K
BST2 19 C16
1uF/ 16V
DRVH2 18 R13
0
PHASE2 17
R15 2.2
DRVL1
PGND
DRVL2
PVCC
16
VCC
15
C22
TH-PAD
R22
1uF /16V
VIN+
C10 C11 C12
0
Q2
PWGRD
FB2
VO1
R16
R25
330
FB1 28k 4.7n F
R20 C25
L1
C20 C21
8.25k
4.7uH
R17
2.2/n.p.
C23
1n/n.p.
Q3
C28 2.2n/n.p.
Q4
C272.2n/n.p.
L2
R18
2.2/n.p.
C24
1n/n.p.
4.7uH
VO2
R26
C18 C19
330 C26
4.7n F
R19
28k FB2
R21
4.87k
2005 Semtech Corp.
21
www.semtech.com
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