LX23108L_PB.pdf

COMPANY CONFIDENTIAL
LX23108L- 8 Port LED Driver
Datasheet
APPLICABLE
DOCUMENTS
DESCRIPTION
®
The LX23108L has eight internal
current limiters with high bandwidth
PWM controls used to maintain the
required LED current.
The LX23108L is controlled and driven
®
by the LX 24132 32 port Display
Backlight LED Controller.
 LX24132/ LX23108L AN-182
Designing a Low Current LED BL
Driver System, Catalogue
Number 06-0077-080
 LX24132 Datasheet
32 Port LED Driver Catalogue
Number 06-0073-058
Each LX24132 can control up to four
LX23108Ls. The LX23108L can drive
currents of up to 100 mA @ 100%
PWM, or 200 mA @ 50% PWM. The
device is designed to operate with
external sense resistors used for
scaling the LEDs currents. Such
configuration
provides
maximum
flexibility for the system designers to
change the LED current while
maintaining high accuracy.

Excellent thermal performance.

High current accuracy: ± 2%
overall chipset (LX24132 and
LX23108L) precision current
accuracy

Driving capability (Constant –
Current Sink) 0 mA to 100 mA
@ 100% PWM, or 200 mA @
50% PWM

Per channel PWM signal

Fault detection and protection:

Open string

Short LED

Over-temperature
protection per channel
W W W. Microsemi .CO M
Microsemi’s LX 23108L is an 8-Port
LED Driver used to drive LED strings.
KEY FEATURES
A dedicated per channel PWM control
signal coming from the LX24132
enables/disables each of the eight
channels. The LX23108L is available
in a 32 pin, 5 mm x 5 mm QFN
package.
IMPORTANT: For the most current data, consult Microsemi's website:
http://www.microsemi.com
PACKAGE ORDER INFO
Plastic 5 x 5 mm QFN 32 pin
RoHS compliant / Pb free
LX23108LILQ
-40 to +85C
Note: Available in Tape & Reel. Append the letters ”TR” to
the part number. (i.e. LX23108LILQ-TR)
TA (C)
LX23108LILQ
PD23108L
Copyright © 2009
Microsemi
2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
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COMPANY CONFIDENTIAL
LX23108L- 8 Port LED Driver
Datasheet
Pin Configuration___________
W W W. Microsemi .CO M
Figure 1: LX23108LILQ Pin Configuration
ABSOLUTE MAXIMUM RATINGS
Supply Input Voltage (VCC) ....................................................-0.5V to 5.5V
Supply I/O Voltage (VIO) ………………………………………..-0.5V to 5.5V
LED Control Pins ....................................................................-0.3V to 72V
All Other Pins ...................................................-0.5V to VIO+0.3 up to 5.5V
Operating Ambient Temperature Range ............................. -40° to +85 C
Maximum Operating Junction Temperature ......................................150C
ESD Protection at all I/O pins .................................................+/- 2KV HBM
Storage Temperature Range............................................ -65C to +150C
Package Peak Temperature for Solder Reflow (40 seconds maximum exposure) 260°C (+0 / -5°C)
THERMAL DATA (POWER CONSUMPTION)
27.5° C/W thermal resistance-junction to ambient, according to the JESD51-7 (Contact factory for additional
thermal performance data)
Junction Temperature Calculation: TJ = TA + (PD x ja).
LX23108LILQ
PD23108L
© 2009 Microsemi Corp.
All rights reserved.
For support contact: [email protected]
Visit our web site at: www.microsemi.com
Copyright © 2009
Microsemi
2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
11