SC4607
POWER MANAGEMENT
Application Information (Cont.)
Design Example 1: 3.3V to1.5V @12A application with SC4607
Vin=3.3V
C13
C10
22u
C11
C14
D2
22u
100u
100u
R3
1u
C71
R13
1
M1
M2
0
U1
R6
1
2
3
4
5
10
9
BST
DRVH
PHASE
DRVL
GND
L1
C3
Vo=1.5V/12A
VCC
ISET
COMP
4.7u
2.3u
8
7
C7
C5
C4
C9
C16
560pF
2.2n
C2
C1
6
22u
22u
330u
5.6n
R7
8.25k
FS/SYNC VSENSE
0
270p
R5
R8
169
SC4607
R1
14.3k
R9
4.12k
Design Example 2: 3.3V to 2.5V @ 20A application with SC4607
2 x 4TPE150M
Vin=3.3V
C10
C11
C13
22u
C14
22u
150u
150u
D2
1u
C17
4 x C3216X5R0J226M
C18
0.1u
R13
1
R3
M12
M22
M11
1.05k
U1
R6
0
1
2
3
4
5
10
9
BST
DRVH
PHASE
DRVL
GND
ETQPAF1R3EA
C3
4.7u
Vo=2.5V/20A
VCC
ISET
COMP
R5
L1 1.3u
8
0
C7
C5
22u
7
C4
C9
M21
C16
560pF
330u
1.5n
6
22u
C2
R7
16.5k
2.7n
FS/SYNC VSENSE
C1
R8
365
SC4607
270p
R1
4 x Si7882
4TPD330M
20k
R9
4.12k
2005 Semtech Corp.
14
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SEMTECH [ SEMTECH CORPORATION ]
