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Microsemi
.C
OM
B
LOCK
D
IAGRAM
B
LOCK
D
IAGRAM
LX1691
Enhanced Multi-Mode CCFL Controller
P
RODUCTION
D
ATA
S
HEET
BRITE_OUT
normal polarity
>>
-
1V
reverse polarity
B
SEL
OUT
digital dim,
external
digital dim,
internal
analog dim >>
DDCLK >>
high=normial
DDCLK >>
pwmgate
TBPER>>
Binary
Counter
Voltage
DAC
+
_
DDCLK
3.0V
CLK
>> digital dim, external
analog dim
Q
VDD >>
D
QB
direct digital dim
DIM_MODE
A/D
1.5V
0V
>> digital dim, internal
OCSNS
OVSNS
ISNS
Full Wave
Rectifiers
®
VREF
VDDP
Bias
MUX
BRITE_OUT >>
A
+
_
2V >>
VDDA
I_R
ENABLE
GND
B
OUT
SEL
+
_
>>2V
>> TBPER
Binary
Counter
Current
DAC
Ram Gen
Copyright
©
2003
Rev. 1.0, 7/16/2004
TM
-
-
-
2V
over current
R
Binary
Counter
VDD
Q
CLK
D
over voltage
fault
AOUT
QB
Binary
Counter
BOUT
Binary
Counter
ignite
EAOUT
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
-
-
BRITE_IN
R
R
MUX
A
analog
dim
BRITE_R
F
IGURE
1
– Simplified Block Diagram
BLOCK DIAGRAM
Microsemi
+
-
Page 8
-
+
+
+
+
+
+
+
MICROSEMI [ MICROSEMI CORPORATION ]
