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SC1109 Datasheet(PDF) 6 Page - Semtech Corporation

Part # SC1109
Description  SYNCHRONOUS PWM CONTROLLER WITH DUAL LOW DROPOUT REGULATOR CONTROLLERS
PDF  17 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC1109 Datasheet(HTML) 6 Page - Semtech Corporation

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SYNCHRONOUS PWM CONTROLLER WITH
DUAL LOW DROPOUT REGULATOR
CONTROLLERS
© 2000 SEMTECH CORP.
PRELIMINARY - October 16, 2000
SC1109
6
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
APPLICATION CIRCUIT
D1
D1N4148
Q3
IRLR3103
1.2V 6A
GND
J8
VTT
J7
R3 0
+
C8
1500uF
GND
J4
5V IN
J6
2.5V
J15
C6
0.1uF
U1
SC1109CS
12
5
3
7
6
9
10
13
14
4
11
8
15
2
1
16
PWRGD
BCAP-
STBY
PHASE
GND
DH
BST
VOSENSE
SS/EN
BCAP+
VCC
DL
GATE2
GATE1
LDOS1
LDOS2
+
C14
330uF
1.8V
J16
R5
0
GND
J2
+
C10
1500uF
12V IN
J1
+
C5
1500uF
C3
0.1uF
VTT
J9
+
C13
330uF
GND
J13
+
C9
1500uF
C7
0.1uF
Q4
IRLR3103
GND
J17
L1
4uH
C13
0.1uF
R1
10k
C4
0.1uF
POWER GOOD J11
R2 0
C1
0.1uF
R4 2.2
+
C2
1500uF
GND
J18
GND
J19
Q1
IRLR3103
GND J10
GND
J12
5V IN
J5
3.3V IN
J14
C12
0.1uF
C11
0.1uF
5V STBY
J3
Q2
IRLR3103
+
C15
330uF



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