SC4601EVB View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SC4601EVB' PDF : 18 Pages View PDF
POWER MANAGEMENT
Applications Information - (Cont.)
SC4601
R0 30.1K
C3 4.7u
C1 470p
R1
C2
5.1K 6.8n
R2
3.32k
R15
1
R3
3.65K
U1
5 FS
ISET 6
1 VCC
PDRV 10
2 SY NC/SLEEPPHASE 7
3 COMP
NDRV 9
4 VSENSE
GND 8
SC4601
C14
M1
33n
R6
1.0
M2
R5
1.0
R11
100
ON/OFF
Figure 6. Schematic for 3.3V/1.5V @ 6A application
C10
C11
22u
22u
Vin = 3.3V
C12 C13
22u 22u
L1
1.6u
C7
C4
150u
22u
Vo = 1.5V/6A
C9
5.6n
R8
102
R9
3.09k
R7
2.7k
R10 TRIM
100
Design Example 2: 5V to 0.8V ~ 1.8V @ 0.4A ~ 1.8A Xenpak application with SC4601.
R0 30.1K
C3 4.7u
R15 1
C1 1.5n
R1
C2
1.58K
33n
R3
U1
5 FS
ISET 6
1 VCC
PDRV 10
2 SYNC/SLEEPPHASE 7
3 COMP
NDRV 9
4 VSENSE
GND 8
S C 4601
C14
33n
U2
R6
4 Gp
1.0
1.0
R5
2 Gn
Dp2 8
Dp1 7
Dn2 6
Dn1 5
FDS8928A
C10
C11
10u
10u
R10
1.47k
L1
4.7u
C7
150u
C9
33n
R7
953
R8
17.8
C4
R16
10u
750
JA
1 5V
2 5V
3 GND
4 GND
5 GND
6 APS-SET
7 APS-SENSE
8 GND
9 APS-OUT
10 APS-OUT
Figure 7. Schematic for Xenpak application with SC4601
2006 Semtech Corp.
14
R9
From outside
www.semtech.com
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