sc4525d Semtech Corporation, sc4525d Datasheet - Page 17

• Manufacturer Part Number: sc4525d
• Description: 18v, 3a, 350khz Step-down Switching Regulator
• Manufacturer: Semtech Corporation

© 2011 Semtech Corp.
Typical Application Schematics
V
V
IN
IN
22 nF
C7
C7
22 nF
C 4
4.7mF
C4
4.7mF
5V
3.3V
Fig. 10: 350 kHz 5 V to 2.5V/3 A Step Down Converte
L1 : CoiltronicsDR73 - 4R7
L1 : Coiltronics DR73 - 3R3
Figure 10. 350kHz 5V to 2.5V/3A Step-down Converter
C8
47 pF
C8
47 pF
Figure 11. 350kHz 3.3V to 1.5V/3A Step-down Converter
SS /EN
SS/EN
COMP
COMP
IN
IN
R7
R7
6.49 k
3.74k
C5
C5
4.7nF
6.8nF
SC4525D
SC4525D
RSET
RSET
BAT-54
D1
R5
60.4k
R5
60.4k
GND
GND
BST
BST
SW
SW
FB
FB
C2 : Murata GRM 31CR60J476M
C4 : Murata GRM 31CR60J475K
C2 : Murata GRM 31CR60J476 M
C4 : Murata GRM 32ER71H475 K
C1
0.33m F
C1
CMSH3 - 20M
0.33 mF
D2
D2
B320A
4.7mH
3.3 mH
BAT- 54
D1
L1
L1
R4
33.2k
R6
22 .1k
R6
66.5 k
R4
33.2k
C2
47mF
C2
47mF
2.5V/3A
1.5V/3A
OUT
OUT
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SC4525D
17