ESIGNS NEW D R O F PART ED EMENT MME N D C O A C L E P R D RE To request the full datasheet, please visit www.intersil.com/products/isl24837 N OT MENDE 24837A RECOMDataSheet ISL September 1, 2010 FN6842.1 ISL24837 8-Channel Programmable I2C TFT-LCD Reference Voltage Generator with Band Gap Trimmed Reference, 4-Channel Programmable Amps with Negative Feedback Inputs, 1-Channel VCOM Op Amp, Integrated VCOM Calibrator and 2 Banks of Integrated EEPROM The ISL24837 is an 8-Channel programmable reference voltage generator with band gap trimmed reference, 4-Channel programmable reference voltages of level shifter with 1-Channel Op amp, and a digitally-controlled VCOM Calibrator. The reference voltage of ISL24837 is generated by gain of internal band gap voltage with external resistors. VCOM calibrator is the sink-current output that attaches to an external voltage divider. The desired VCOM setting is able to be adjusted by I2C interface. Two I2C selectable banks of 8-channels enable fast switching between 2 different gamma curves stored in internal EEPROM. ISL24837 is available in a 32 Ld QFN package and is specified for operation over the -40°C to +85°C temperature range. • 4-Channel Programmable Amps with feedback inputs for Level Shifter Reference Voltages • Integrated Programmable VCOM Calibrator • 1 VCOM Op Amp • 2 Banks of EEPROM Storage - 260 bits of memory size - rewriteable 300 times • 15mV Resolution (10-bits) • Analog Supply: 12V to 18V @ 15mA (Unloaded) • Digital Supply: 2.4V to 3.3V @ 1mA (Unloaded) • I2C Interface • Pb-free (RoHS Compliant) Applications • TFT-LCD Column Driver Reference Generator • General-Purpose Reference Voltage Generators ISL24837 IRZ 32 Ld QFN L32.5x6C NOTES: 26 INNCOM ISL24837IRZ-T13 (Note 1) 27 INPCOM/DVROUT L32.5x6C 28 SET 32 Ld QFN 29 DVDD ISL24837 IRZ 30 SET_COMP ISL24837IRZ 31 V_THERM PKG. DWG. # REFIN_IN 1 OUT1 2 24 OUT12 OUT2 3 23 OUT11 OUT3 4 22 OUT10 THERMAL PAD AVDD 5 21 AVDD OUT5 8 18 OUT8 INN5 9 17 INN8 OUT7 16 19 OUT9 INN7 15 OUT4 7 BANK_SELECT 14 20 GND SCL 13 GND 6 OUT6 10 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 25 OUTCOM SDA 12 1. Please refer to TB347 for details on reel specifications. INN6 11 PACKAGE (Pb-free) ISL24837 (32 LD QFN) TOP VIEW 32 REFIN PART MARKING • 8 Programmable Voltages with Band Gap trimmed Reference Pinout Ordering Information PART NUMBER (Note 2) Features THERMAL PAD CONNECTS TO GND 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. I2C Bus™ is a trademark owned by NXP Semiconductors Netherlands, B.V. Copyright © Intersil Americas Inc. 2009, 2010. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. ISL24837 All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9001 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality 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 2 FN6842.1 September 1, 2010