LX24132 Datasheet, PDF (1/2 Pages) –

PRODUCT BRIEF
TM
®
LX24132 - 32 Channels BackLight
LED Driver
DESCRIPTION
APPLICABLE DOCUMENTS
KEY FEATURES
The LX^®24132ILQ is a 32 channel
LED current driver. The device is
part of a chipset and each
LX^®24132ILQ is capable of
controlling four FET Arrays. They
contain eight FETs driving and
controlling up to 32 LED channels,
where each channel is capable of
driving a current of up to 200mA.
The internal power supply control
circuitry adjusts the voltage level of
an external LED Power Source. It is
done by regulating the LED supply
voltage to the optimum level, thus,
minimizing the system power loss.
At the same time, accurate current
regulation for each of the 32 LED
strings is maintained.
 LX^®23108LILQ Datasheet, 8  White LED or RGB BackLight
Channel FET Array Cat. No.
driver for large size display
06-0074-058
panels
 LX^®24132ILQ / LX^®23108LILQ  Up to 32 LED strings with ±1.5%
AN-182, Designing a Low
precision current matching
Current LED BackLight Driver  Wide dimming ratio with PWM
System, Cat No. 06-0077-080
and LED current amplitude
control
 12-bit PWM duty-cycle
resolution and 8-bit resolution
for LED current setting
 LED power supply voltage
control
 SPI communication interface
 Open string, short LED and
over-temperature protection for
each individual channel
 On-chip thermal monitoring
An SPI interface allows for fast
communication with the Host
system. A "Daisy Chain" concept
and very fast baud rate facilitate the
multiple connections of the LED
drivers for small or large panels.
The LX^®24132ILQ can detect three
types of system faults on each of its
32 channels (over-temperature,
open LEDs and short LEDs) and
practices protection measures
accordingly.
Over-temperature and LED short-
circuit protections prevent the device
from over-heating by shutting down
its operation before the junction
temperature reaches the "unsafe"
operating limit. It resumes its
operation when the chip cools down.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PACKAGE ORDER INFO
T_A (C)
-40 to +85C
Plastic 8x8mm QFN 56 pin
RoHS Compliant/Pb free
LX24132ILQ
Note: Available in Tape & Reel. Append the letters ”TR” to the part number. (i.e. LX24132ILQ-TR)
Copyright  2009
Rev. 0.4, 2009-03-26
Microsemi
Analog Mixed Signal Group
1 Hanagar st., P.O/ Box 7220 Hod Hasharon 45421, Israel Tel: [phone] Fax: [phone]
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