SC1109ACSTR SEMTECH [Semtech Corporation], SC1109ACSTR Datasheet - Page 16

• Manufacturer Part Number: SC1109ACSTR
• Description: Synchronous PWM Controller with Dual Low Dropout Regulator Controllers
• Manufacturer: SEMTECH [Semtech Corporation]

POWER MANAGEMENT
Evaluation Board Schematic
2004 Semtech Corp.
POWER GOOD J11
5V STBY J3
OCSET
12V IN
5V STBY J3
5V IN
GND
5V IN J6
GND
GND J8
GND J10
12V IN
1nF
GND
5V IN
5V IN J6
GND
GND J8
C16
GND J10
J14
J17
J2
J1
J4
J5
J11
J14
3.3V IN
J17
J2
J1
J4
J5
GND
3.3V IN
R1
TBD
GND
R1
10k
0.1uF
C16
C2
C2
1500uF
+
1500uF
+
+
C5
+
C13
330uF
C5
1500uF
C13
330uF
+
0.1uF
1500uF
+
C3
0.1uF
C3
0.1uF
C12
0.1uF
C12
R5
0
C6
0.1uF
R5
0
C6
0.1uF
0.1uF
C7
11
14
12
13
15
16
0.1uF
4
5
C7
11
14
12
13
15
16
4
5
VCC
BCAP+
BCAP-
SS/EN
OCSET
VOSENSE
GATE2
LDOS2
U1
VCC
BCAP+
BCAP-
SS/EN
PWRGD
VOSENSE
GATE2
LDOS2
+
U1
+
Q3
IRLR3103
C14
330uF
SC1109C
Q3
IRLR3103
C14
330uF
SC1109A/B
PHASE
GATE1
LDOS1
STBY
GND
PHASE
BST
LDOS1
GATE1
DH
DL
STBY
GND
BST
16
DH
DL
3
10
9
7
8
6
2
1
1.5V
GND
D1N4148
3
10
9
7
8
6
2
1
1.5V
GND
D1N4148
J15
J18
D1
J15
J18
R3 0
R2 0
D1
R4 2.2
R2 0
R3 0
C4
0.1uF
R4 2.2
C4
0.1uF
Q1
IRLR3103
Q2
IRLR3103
L1
Q1
IRLR3103
Q2
IRLR3103
C1
0.1uF
L1
4uH
C1
0.1uF
+
4uH
C8
+
Q4
IRLR3103
C15
330uF
C8
1500uF
Q4
IRLR3103
C15
330uF
+
1500uF
+
C9
C9
1500uF
+
1500uF
+
C10
C10
1500uF
+
1.8V
1.2V 6A
GND
1500uF
+
1.2V 6A
1.8V
GND
J16
J19
J16
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J19
C11
0.1uF
SC1109
C11
0.1uF
VTT
VTT
GND
VTT
GND
VTT
GND
J7
J9
GND
J12
J13
J7
J9
J12
J13