LX23108A Datasheet, PDF (1/2 Pages) Microsemi Corporation – 8 Ports LED Back Light High Voltage Driver

CONFIDENTIAL
LX23108A
TM
® _{8 Ports LED Back Light High Voltage Driver}
DATA SHEET
DESCRIPTION
KEY FEATURES
LX23108A - is a compact 8 Ports White The LX23108A LED Driver enables a
or RGB back light LED Driver, to be wide dimming range, achieved _•
used in large display notebooks, LCD through a combination of LED current
monitors, and TV sets. It is designed to amplitude and PWM duty-cycle _•
work together with the LX24132 LED control. In addition, the chipset
Controller as a chipset, driving up to 32
LED strings with a variable current of
provides a thermally robust solution
through advanced system control;
•
up to 200mA peak. In addition, the
LX23108A provides the LX24132 LED
including Drain Voltage Sensing for
Open/Shorts events and per string
•
Controller with its ports voltage Thermal Protection monitoring.
samples, that facilitate the control of the
•
LED strings supply voltage through an The LX23108A is offered in both
external DC/DC converter; minimizing 5x5mm and 7x7mm 32 pin QFN ^•
the power dissipation while regulating packages.
the LED currents for all 8 strings.
Current regulation is maintained within
a ± 3 percent.
The LX23108A 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
PACKAGE ORDER INFO
LX23108AHILQ
MLPQ Plastic 7 x 7mm 32 pin
LX23108ALILQ
MLPQ Plastic 5 x5mm 32 pin
RoHS Compliant / Pb-free
Note: Available in Tape & Reel. Append the letters “TR” to the part number.
(i.e. LX23108AILQ-TR)
THERMAL DATA
T_A (°C) -40 to 85
22.5 ° C/W According to the JESD51-7
THERMAL RESISTANCE-JUNCTION TO AMBIENT
T_A (°C) -40 to 85
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.