LX1688CPW Microsemi Analog Mixed Signal Group, LX1688CPW Datasheet - Page 13
![IC CTRLR CCFL BACKLIGHT 24TSSOP](/photos/7/39/73930/lx1688cpw_sml.jpg)
LX1688CPW
Manufacturer Part Number
LX1688CPW
Description
IC CTRLR CCFL BACKLIGHT 24TSSOP
Manufacturer
Microsemi Analog Mixed Signal Group
Type
CCFL Controllerr
Datasheet
1.LX1688CPW.pdf
(16 pages)
Specifications of LX1688CPW
Frequency
60 ~ 70 kHz
Current - Supply
5.5mA
Current - Output
100mA
Voltage - Supply
3 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Package / Case
24-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Copyright © 2001
Rev. 1.2, 2006-03-09
operating in phase and frequency synchronization. This prevents random interface between controllers and reduces EMI.
Output currents
gate signals of Master and slaves during digital dimming at
50% and 5% duty cycle.
Digital Dimming
Figure 8 shows the output current of master and slaves during digital dimming with 5% duty cycle. The lamp currents are
The following oscilloscope waveforms are showing
Figure 6-
TM
Gate signals during digital dimming with
50% duty cycle CH2= A
CH3=A
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
OUT
(Slave1), CH4=A
OUT
(Master),
T H E O R Y O F O P E R A T I O N
OUT
(Slave2)
Integrated Products Division
®
Microsemi
RangeMAX™
Multiple Lamp CCFL Controller
Figure 7-
P
RODUCTION
Gate signals during digital dimming with
5% duty cycle CH2= A
CH3=A
OUT
Figure 8-
(Slave1), CH4=A
D
ATA
digital dimming with 5%
duty cycle R1= out(Master)
R2=Iout(Slave1)
R3=Iout(Slave2)
Lamp Current at 10mA/Div
Output current during
S
OUT
HEET
(Master),
OUT
(Slave2
LX1688
)
Page 13