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Número de pieza
componentes Descripción
SC1102A Ver la hoja de datos (PDF) - Semtech Corporation
Número de pieza
componentes Descripción
Fabricante
SC1102A
Synchronous Voltage Mode Controller for Distributed Power Supply Applications
Semtech Corporation
SC1102A Datasheet PDF : 12 Pages
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SC1102/SC1102A
POWER MANAGEMENT
Application Circuit
Typical 12V Application Circuit with Bootstrapped BSTH
+5V
R1
R2
1k
1.74k
PWRGD
OVP
C1
opt.
C2
0.1
R4
10
U1
SC1102
1
VCC
GND
14
2
PWRGD
SS/SHDN
13
R3
1k
3
OVP
VREF
12
4
OCSET
SENSE
11
5
D1
MBR0520
6
PHASE
DRVH
BSTH
10
BSTL
9
7
PGND
DRVL
8
D2
MBRA130
C3
0.1
SHDN
VREF
C4
1.0
R5
3.9
R6
2.2
Q1
STP40NE
Q2
STP40NE
+
C5
10.0
C6
270/16V
C7
270/16V
C8
Vin 12V
270/16V
_
R8
127
C9
L1
1.0
4uH
D3
MBRD1035
Optional
C10
180/4V
R9
205*
C11
180/4V
C12
180/4V
C13
180/4V
+
C14
180/4V
Vout=3.3V*
_
NOTE:
*) Vout = 1.265 x (1+R9/R8)
2006 Semtech Corp.
7
www.semtech.com
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