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 +85C 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 10 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 ......................................150C ESD Protection at all I/O pins .................................................+/- 2KV HBM Storage Temperature Range............................................ -65C to +150C 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