SC1103 Semtech Corporation, SC1103 Datasheet - Page 7

• Manufacturer Part Number: SC1103
• Description: VOLTAGE MODE PWM CONTROLLER
• Manufacturer: Semtech Corporation

TYPICAL APPLICATIONS (cont.)
Fig. 9: 5V to 2.5V @ 4A with “flying capacitor” boost voltage.
Fig. 10: 12V to 3.3V @ 10A with “flying capacitor” boost voltage.
© 2000 SEMTECH CORP.
PRELIMINARY - February 29, 2000
+5V
GND
+12V
GND
R1
10
R1
10
C3
0.1
C5
1.0
C1
0.1
R2
1k
R2
1k
C1
0.1
R3
1k
C2
820/16V
C6
0.1
C4
0.1
1500/6.3V
C3
820/16V
C2
1
2
3
4
1
2
3
4
D2
LL42
VCC
Cs(-)
Cs(+)
PGND
VCC
Cs(-)
Cs(+)
PGND
C4
820/16V
SC1103
U1
D2
LL42
SC1103
U1
GND
BST
DH
FB
VOLTAGE MODE PWM CONTROLLER
GND
BST
DH
FB
8
7
6
5
C8
0.1
IRL3103S
Q1
8
7
6
5
Si4420DY
C7
0.01
MBRB1530CT
Q1
D1
R4
2.7
C5
0.01
MBRD340
C6
0.1
D1
R4
2.7
5.6uH
L1
6.8uH
L1
652 MITCHELL ROAD NEWBURY PARK CA
R5
0.01
R5
0.012
C9
1500/6.3
C10
1500/6.3
C7
1500/6.3V
C11
1500/6.3V
C8
0.1
C12
0.1
R6
124
R7
124
R6
205
R7
124
SC1103
Vout(+)
+2.5V
Vout(-)
3.3V
GND
7