The VCOM voltage of an LCD panel needs to be adjusted to remove flicker. This part provides a digital interface to control the sink current output that attaches to an external voltage divider. The increase in output sink current lowers the voltage on the external divider, which is applied to an external VCOM buffer amplifier. The desired VCOM setting is loaded from an external source via a standard 2-wire I2C serial interface. At power-up, the part automatically comes up at the last programmed EEPROM setting. An external resistor attaches to the SET pin and sets the full-scale sink current that determines the lowest voltage of the external voltage divider. The ISL45041 is available in an 8 Ld 3mm x 3mm TDFN package with a maximum thickness of 0.8mm for ultra-thin LCD panel design. An evaluation kit complete with software to control the DCP from a computer is available.

Features

  • 128-step adjustable sink current output
  • 2.25V to 3.6V logic supply voltage operating range (2.6V minimum programming voltage)
  • 4.5V to 18V analog supply voltage operating range (10.8V minimum programming voltage)
  • I2C interface with addresses 100111x and 100110x
  • On-chip 7-bit EEPROM
  • Output adjustment SET pin
  • Output guaranteed monotonic over-temperature
  • Thin 8 Ld 3mm x 3mm DFN (0.8mm max)
  • Pb-free (RoHS compliant)

Applications

  • LCD panels

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TDFN Tube 100
Availability
Active TDFN Reel 6000
Availability

Documentation

Title language Type Format File Size Date
Datasheets & Errata
ISL45041 Datasheet Datasheet PDF 520 KB
Application Notes & White Papers
AN1993: Voltage Feedback versus Current Feedback Operational Amplifiers Application Note PDF 564 KB
AN1208: LCD screens don't flicker - or do they? Application Note PDF 298 KB
AN1694: The Four Basic Building Blocks of an Op Amp Application Note PDF 357 KB
PCNs & PDNs
PCN14009 - Alternate Manufacturing Facilities for Assembly of the Listed Intersil TDFN/QFN/TQFN Packaged Products - Advanced Semiconductor Engineering (ASECL) - Chung-Li , Taiwan and Carsem (CAS) - Ipoh, Malaysia Product Change Notice PDF 151 KB
PCN13060 - Test Site Change for the Listed Intersil Products Product Change Notice PDF 223 KB
PCN10127 - Data Sheet and Wafer Fabrication Site Change for Intersil Product ISL45041* - Taiwan Semiconductor Manufacturing Company (TSMC) Shanghai, China Product Change Notice PDF 269 KB
Other
PA14042 - Minimum Line Quantity Change Product Advisory PDF 363 KB

Boards & Kits

Part Number Title Type Company
ISL45041EVAL1Z TFT-LCD, I2C Programmable, VCOM Calibrator Evaluation Board Evaluation Renesas