sc4525c Semtech Corporation, sc4525c Datasheet - Page 17

• Manufacturer Part Number: sc4525c
• Description: 28v 3a Step-down Switching Regulator
• Manufacturer: Semtech Corporation

Typical Application Schematics
V
V
IN
IN
C7
22 nF
10V – 26V
22nF
C 7
C4
4.7m F
C4
4.7mF
Figure 11. 1MHz 10V-26V to 3.3V/3A Step-down Converter
24V
Figure 10. 300kHz 24V to 1.5V/3A Step-down Converter
Fig10 : 300 kHz 24 V to 1.5V/3 A Step
L1 : Coiltronics DR74- 6R8
L1 :
22 pF
C8
C 8
22 pF
SS/ EN
SS/ EN
COMP
COMP
Coiltronics DR74 - 3R3
IN
IN
R7
22.6 k
18 V Zener
R7
3. 57k
C 5
3.9 nF
0.82 nF
C5
SC 4525C
D3
SC 4525C
ROSC
ROSC
R5
69.8k
15.8 k
R5
D1 1N 4148
GND
GND
BST
BST
SW
SW
FB
FB
C2 : Murata GRM 31 CR60J 476 M
C4 : Murata GRM 32 ER71H 475 K
220pF
C0
C2 :
C4 :
R0
1
Murata GRM 31 CR60J 476M
Murata GRM 32 ER71H 475K
C1
0.33 m F
C1
0. 33 mF
D2
B 330A
6.8 mH
B330A
D2
3.3 mH
L1
1 N 4148
D1
L1
66.5k
14.3 k
33.2k
R4
33.2k
R6
R4
R6
-
3.3V/3 A
C2
C2
47mF
47mF
OUT
1.5V/3A
OUT
Down Conv
17