
1
FN6189.4
ISL45041
TFT-LCD I2C Programmable VCOM
Calibrator
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. Reference Application Note
AN1275 and “Ordering Information”.
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
Pinout
ISL45041
(8 LD TDFN)
TOP VIEW
Ordering Information
PART NUMBER
PART
MARKING
TEMP.
RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL45041IRZ
041Z
0 to +85 8 Ld 3x3 TDFN L8.3x3A
ISL45041EVAL1Z Evaluation Board
NOTE:
1. Add “-T*” suffix for tape and reel. Please refer to
TB347 for details
on reel specifications.
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.
3. For Moisture Sensitivity Level (MSL), please see device
information page for
ISL45041. For more information on MSL,
please see Technical Brief
TB363.
OUT
AVDD
WP
GND
1
2
3
4
8
7
6
5
SET
SCL
SDA
VDD
PAD
Data Sheet
December 17, 2010
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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