SC4605IMSTR View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SC4605IMSTR' PDF : 19 Pages View PDF
SC4605
POWER MANAGEMENT
Applications Information (Cont.)
Design Example 1: 3.3V to 1.5V @ 12A application with SC4605 (NH020 footprint)
D2
1u
C71
R3
2.26k
C14
0.1u
R13
R6
1
U1
1 BST
DRVH 10
1.0
C3
4.7u
2 VCC
3 ISET
PHASE 9
DRVL 8
C1
180p
C2 2.2n
R12
100
C20
470pF
4 COMP
5 FSET
GND 7
VSENSE 6
R5
1.0
SC4605
R1
14.3k
R11
100
ON/OFF
C10
330u
M1
+VIN
C12
22u
L1
1.8u
C7
C6
M2
150u 150u
GND
1
2
3
4
5
ON/OFF 6
J1
+VOUT
C5
C4
C9
22u
22u
4.7n
R7
10k
R8
200
R9
11.5k
1
2
3
4
5
J2
R10
TRIM
100
Figure 5. Schematic for 3.3V/1.5V@12A with SC4605 application
Design Example 2: 5V to 1.5V @ 12A application with SC4605 (NH020 footprint)
D2
1u
C71
R3
C14
2.8k
0.1u
R13
R6
1
U1
1 BST
DRVH 10
1.0
C3
4.7u
2 VCC
3 ISET
PHASE 9
DRVL 8
C1
180p
C2 2.2n
R12
C20
100 470pF
4 COMP
5 FSET
GND 7
VSENSE 6
SC4605
R5
1.0
R1
14.3k
C10
330u
M1
+VIN
C12
22u
L1
1.8u
C7
C6
M2
150u 150u
R11
100
ON/OFF
Figure 6. Schematic for 5V/1.5V@12A with SC4605 application
2004 Semtech Corp.
12
GND
1
2
3
4
5
ON/OFF 6
J1
+VOUT
C5
C4
C9
22u
22u
4.7n
R7
10k
R8
200
R9
11.5k
1
2
3
4
5
J2
R10
TRIM
100
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