SC1109 Ver la hoja de datos (PDF) - Semtech Corporation
Número de pieza
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SC1109 Datasheet PDF : 17 Pages
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PRELIMINARY - October 16, 2000
SYNCHRONOUS PWM CONTROLLER WITH
DUAL LOW DROPOUT REGULATOR
CONTROLLERS
SC1109
APPLICATION CIRCUIT
12V IN J1
GND J2
5V STBY J3
GND J4
5V IN J5
5V IN J6
R1
10k
GND J8
GND J10
POWER GOOD J11
C13
0.1uF
C2
+
C3
0.1uF
1500uF
C5 +
1500uF
C12
0.1uF
R5
0
C6
0.1uF
U1 SC1109CS
11 VCC
STBY 3
C4
0.1uF
4
C7
0.1uF
5
14
12
13
15
16
BCAP+
BST
DH
BCAP- PHASE
SS/EN
PWRGD
DL
VOSENSE GND
GATE2 GATE1
LDOS2 LDOS1
10
9
R2 0
7
R4 2.2
D1
8
R3 0
D1N4148
6
2
1
3.3V IN
J14
GND
J17
+ C13
330uF
Q3
IRLR3103
+ C14
330uF
2.5V
J15
GND
J18
C1
0.1uF
Q1
IRLR3103
L1 4uH
1.2V 6A
Q2
C8 + C9 + C10 +
IRLR3103
1500uF 1500uF 1500uF
C11
0.1uF
VTT
J7
J9
VTT
GND
J12
J13
GND
Q4
IRLR3103
+ C15
330uF
1.8V
J16
GND
J19
© 2000 SEMTECH CORP.
6
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
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