sc2544 Semtech Corporation, sc2544 Datasheet - Page 18

• Manufacturer Part Number: sc2544
• Description: Sc2544 High Performance Wide Input Range Dual Synchronous Buck Controller
• Manufacturer: Semtech Corporation

© 2005 Semtech Corp.
POWER MANAGEMENT
Typical Application Circuit
SC2544MLTRT
FB1
R17
R12
VO1
28K
C19 3.9nF
4.9K
R15 499
C20
N.P.
C21
C5
N.P.
N.P.
C22
FB1
10uF/25V
R10
C6
C23
10uF/25V
C9
2.2
L1
C7
C3
4.7n
0.1uF/25V
R4
EN
1n
R6
C32
C8
C34
N.P.
R25
N.P.
7.6uH
18k
4.7K
C1
C2
SS1
N.P.
VIN+
Q2
Q3
C17 1uF/16V
1uF/25V
1uF/16V
C10 220nF
C30
R8
VIN+
N.P.
0
VCC
10
11
12
1
2
3
4
5
6
7
8
9
Vin: 4.5V ~ 28V
Vout: 3.3V/6A and 5V/6A
VIN
VCC
EN
FB1
ERROUT1
SS1
ILIM1
BST1
DRVH1
PHASE1
DRVL1
PGND
U1
SC2544
R24
0R
ERROUT2
PWRGD
PHASE2
18
DRVH2
DRVL2
AGND
ROSC
PVCC
ILIM2
BST2
FB2
SS2
24
23
22
21
20
19
18
17
16
15
14
13
C31
R9
C18
R3
VCC
470nF
1uF/16V
0
73.2K
C11
C29
N.P.
SS2
C33
R7
Q1
Q4
R5
R2
VIN+
VO2
C13
18k
4.7K
N.P.
10K
L2
C35
R25
0.1uF/25V 10uF/25V
C4
N.P.
N.P.
PWGRD
1n
C12
C14
R11
4.7n
7.6uH
C24
2.2
C15
N.P.
10uF/25V
C25
FB2
C16
N.P.
C26
N.P.
C27
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SC2544
R13 499
C28 3.3nF
R18 8.25K
R14
VO2
28K
FB2