LX1686(2000) Ver la hoja de datos (PDF) - Microsemi Corporation
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LX1686 Datasheet PDF : 5 Pages
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RangeMAXTM
PRODUCT DATABOOK 1996/1997
DIGITAL DIMMING CCFL CONTROLLER IC
PRELIMINARY DATA SHEET
LX1686
BLOCK DIAGRAM
P D _C R
C PDC
R PD
C PD
FVER T
A FD _C
C AFD
V C O _C
C VCO
B R IT E
P hase
D e te c to r
2 .5 V
A u to
F re q .
VCO
0V
D e te c t
0 .5 - 2 .5 V
B u rs t
C o m p a ra to r
50k
B R T_P O S
D IG _ D IM
ENA
50k
1 .5 V
0 -3 V
VDD VDD
D im m in g C o n tr o l
C VCOM P
B R T IS N S V S N S
C IC O M P
VCO M P
IC O M P
V o lta g e
E rro r
Am p
VAM P
1 .2 5 V
IA M P
PW M
C o n tr o lle r s
V o lta g e
C o m p a ra to r
O u tp u t
S te e r in g
L o g ic
VCO M P
QA
IC O M P
O u tp u t
D r iv e r s
C u rre n t
E rro r A m p
R A M P _C
C RAM P
0 .2 5 -2 .2 5 V
C u rre n t
C o m p a ra to r
QB
R A M P _C
T r ia n g le
W ave
G e n e ra to r
R A M P _D O U T
C LK
OUT
O pen Lam p
C o m p a ra to r
Ig n ite
B ia s G e n e r a to r ,
U V L O , a n d V REF
ENA
P W R _G D
2 .5 0 V
V D D _S W
300m V
255m V
PW M
R am p
G e n e ra to r
R A M P _R
R RAM P2
R RAM P1
VDD
T R I_ C
C TRI
O LSN S
V D D _P
AOUT
BOUT
V S S _P
VDD
EN A B LE
I_ R
Ri
VSS
FIGURE 1 — LX1686 Block Diagram
RangeMAX and is a trademark of Linfinity Microelectronics Inc.
PRELIMINARY DATA - Information contained in this document is pre-production data, and is proprietary to LinFinity. It may
not modified in any way without the express written consent of LinFinity. Product referred to herein is offered in sample form
only, and Linfinity reserves the right to change or discontinue this proposed product at any time.
Copyright © 2000
Rev. 0.4 1/00
5
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