LX1688IPW Microsemi Analog Mixed Signal Group, LX1688IPW Datasheet - Page 13

• Manufacturer Part Number: LX1688IPW
• Description: IC CTRLR CCFL BACKLIGHT 24TSSOP
• Manufacturer: Microsemi Analog Mixed Signal Group
• Type: CCFL Controllerr

Specifications of LX1688IPW

• Frequency: 57 ~ 70 kHz
• Current - Supply: 5.5mA
• Current - Output: 100mA
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°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: [phone]
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
)
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