LX1672 Ver la hoja de datos (PDF) - Microsemi Corporation
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LX1672 Datasheet PDF : 20 Pages
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LX1672
®
Multiple Output LoadSHARE™ PWM
TM
PRELIMINARY DATA SHEET
BLOCK DIAGRAM
VS1
EO1
FB1
CS1
VTRIP
CS Comp
-
IRESET
+
ISET
RSET
PWM
RQ
SQ
Error Comp
+
-
-
+ Amplifier/
Compensation
VREF
20k
Ramp
Oscillator
UVLO UVLO
S
F FAULT S
R
S
SS1
SS2
Hiccup
ISET
+12V
VC1
HO1
LO1
PG1
+5V
V in
R2
CIN
R1
L1
ESR
V out 1
COUT
VCCL
16V 16V
+5V
TEMP
VCC
5.5V
SS
CSS
DIS1
PWGD
(MLP Only)
Figure 1 – Block Diagram of PWM Phase 1
+V
LDGD
VREF
+12V
VC1
VOUT3
-
LDFB
+5V
LDDIS
Figure 2 – LDO Controller Block Diagram
Copyright © 2000
Rev. 0.3m, 2005-04-12
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 6
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