DATASHEET To request the full datasheet, please visit www.intersil.com/products/isl24833 18-Channel Programmable I2C TFT-LCD Reference Voltage Generator with Integrated VCOM Calibrator and 2 Banks of EEPROM ISL24833 Features The ISL24833 is an 18-channel, 10-bit I2C programmable • 18-Channel I2C Programmable 10-bit DACs reference voltage generator for TFT-LCDs with dual bank outputs. It also provides an I2C programmable, 1-channel, 8-bit VCOM calibrator with VCOM amplifier and internal EEPROM. • Integrated I2C Programmable 8-bit VCOM Calibrator The two output banks are capable of switching quickly (<1µs) enabling rapid switching between two gamma curves (or operational modes) in TFT-LCD applications. The ISL24833 also integrates two banks of EEPROM capable of storing all reference voltage data. The EEPROM is capable of >300 write cycles. • One VCOM Op Amp • Two Banks of EEPROM Storage (Rewritable >300 times) • Fast Output Bank Switching: <1µs Typical • Analog Supply: 12V to 18V @ 15mA (Unloaded) • Digital Supply: 2.5V to 3.3V @ 1.3mA (Unloaded) • I2C Serial Interface • Pb-free (RoHS compliant) Combining gamma and VCOM reference voltage generators with low power operation and EEPROM, the ISL24833 provides a complete reference voltage solution ideal for large area TFT-LCD display applications. Applications ISL24833 is available in a 32 Ld 5mmx6mm QFN thermally enhanced package. It is specified for operation over the -40°C to +85°C temperature range. • General-Purpose Reference Voltage Generators • TFT-LCD Column Driver Reference Generator • TFT-LCD VCOM Calibrator and Driver GAMMA VOLTAGES TFT-LCD PANEL TIMING TIMING CONTROL (TCON) COLUMN DRIVERS TFT-LCD SCREEN ISL24833 GAMMA BUFFER (COLUMN DRIVER DAC REFERENCE VOLTAGES) VCOM CALIBRATOR VCOM DRIVER DATA LINE GATE DRIVERS STORAGE CAPACITOR SELECT LINE LC PIXEL TFT COMMON (VCOM) FIGURE 1. TYPICAL APPLICATION: TFT-LCD REFERENCE VOLTAGE GENERATOR July 27, 2011 FN6840.3 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2010, 2011. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. ISL24833 For additional products, see www.intersil.com/en/products.html Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted in the quality certifications found at www.intersil.com/en/support/qualandreliability.html Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com Submit Document Feedback 2 FN6840.3 July 27, 2011