LX23108AL Datasheet, PDF (1/2 Pages) Microsemi Corporation – 8 Ports LED Back Light High Voltage Driver

CONFIDENTIAL
LX23108AL
TM
® _{8 Ports LED Back Light High Voltage Driver}
DATA SHEET
DESCRIPTION
KEY FEATURES
LX23108AL - is a compact 8 Ports The LX23108AL LED Driver enables
White or RGB back light LED Driver, a wide dimming range, achieved _•
to be used in large display notebooks, through a combination of LED current
LCD monitors, and TV sets. It is amplitude and PWM duty-cycle _•
designed to work together with the control. In addition, the chipset
LX24132 LED Controller as a chipset,
driving up to 32 LED strings with a
provides a thermally robust solution
through advanced system control;
•
variable current of up to 200mA peak.
In addition, the LX23108AL provides
including Drain Voltage Sensing for
Open/Shorts events and per string
•
the LX24132 LED Controller with its Thermal Protection monitoring.
ports voltage samples, that facilitate the
•
control of the LED strings supply The LX23108AL LED Driver is
voltage through an external DC/DC housed in a 32 pin, 5mmx5mm QFN ^•
converter; minimizing the power package.
dissipation while regulating the LED
currents for all 8 strings. Current
regulation is maintained within a ± 3
percent.
The LX23108AL LED Driver includes
•
8 High Bandwidth Current Limiter
•
Cells with PWM Control (ON/OFF
Signal).
The chip is designed to operate with
external Sense Resistors. Such
configuration provides maximum
flexibility for system designers when
scaling up or down the LED currents for
meeting a wide range of high accuracy
application requirements.
White LED, or RGB Backlight Driver for
large size display panels
Up to 8 LED strings with ± 0.5% precision
current matching.
Wide dimming ratio with PWM duty-cycle
and LED current amplitude controls.
12 bit PWM duty-cycle resolution –
controlled by LX24132 LED Controller.
8 bit resolution for LED current setting –
controlled by LX24132 LED Controller.
Open string, short LED and Over-
Temperature protection per individual
channel.
APPLICATIONS
LCD Monitor and TV
Large Signage Display
IMPORTANT: For the most current data, consult MICROSEMI’s website:
http://www.microsemi.com
T_A (°C)
PACKAGE ORDER INFO
MLPQ Plastic 5 x5mm 32 pin
RoHS Compliant / Pb-free / MSL 1
-40 to 85
LX23108ALILQ
Note: Available in Tape & Reel. Append the letters “TR” to the part number.
(i.e. LX23108ALILQ-TR)
THERMAL DATA
27.5 ° C/W According to the JESD51-7
THERMAL RESISTANCE-JUNCTION TO AMBIENT
Junction Temperature Calculation: TJ = TA + (PD x θJA).
The θJA numbers are guidelines for the thermal performance of the
device/pc-board system. All of the above assume no ambient airflow.