SC1103CSTRT Semtech, SC1103CSTRT Datasheet - Page 5

• Manufacturer Part Number: SC1103CSTRT
• Description: IC, VOLTAGE MODE PWM CTRL, 12V, 8-SOIC
• Manufacturer: Semtech

Specifications of SC1103CSTRT

• Input Voltage: 12V
• Output Voltage: 2.5V
• Output Current: 500mA
• Frequency: 200kHz
• Supply Voltage Range: 5V To 12V
• Digital Ic Case Style: SOIC
• No. Of Pins: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

POWER MANAGEMENT
Application Circuit
12V to 2.5V @ 10A (Bootstrapped)
Applications Information (Cont.)
Layout diagram for the SC1103
V
2005 Semtech Corp.
O
= V
REF
+12V
(1 + Ra/Rb)
GND
C4
0.1
R1
10
* NOTE:
R6 = R7 x (Vout/1.25 - 1) rounded to nearest 1%value
10
R2
1k
Heavy lines indicate
high current paths.
0.001uF
C1
1.0
C5
0.001
R3
1k
47/16V
C2
1
2
3
4
1
2
3
4
SC1103CS
VCC
CS(-)
CS(+)
PGND
VCC
CS(-)
CS(+)
PGND
47/16V
C3
D1
LL4148
SC1103
U1
0.1uF
GND
BST
DH
FB
GND
BST
DH
FB
8
7
6
5
C7
0.1
8
7
6
5
IRLR3103
Q1
C6
0.01
20-24V BST
R4
2.2
Rb
Ra
5
MBRD1035L
D2
Q1
L1
6uH
D1
Cin
12VIN
R5
0.05
+
6uH
C8
220/4V
C9
220/4V
Cout
C10
220/4V
+
C11
1.0
Vout
R6
76.8 *see note
R7
127
SC1103
www.semtech.com
Vout = 2.5V @ 10A
+
GND