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ISL45041
Data Sheet
August 29, 2006
FN6189.2
TFT-LCD I
2
C Programmable VCOM
Calibrator
The V
COM
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 V
COM
buffer amplifier. The desired V
COM
setting is
loaded from an external source via a standard 2-wire I
2
C
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 3mmx3mm 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
AN1207 and Ordering Information.
Features
鈥?128-Step Adjustable Sink Current Output
鈥?2.25V to 3.3V Logic Supply Voltage Operating Range
(2.25V Minimum Programming Voltage)
鈥?Analog Supply Voltage Range 4.5V to 18V for VDD from
2.6V to 3.6V; 4.5V to 13V for VDD from 2.25V to 2.6V
鈥?I
2
C Interface (Slave and Transmitter) - Address: 1001111
鈥?On-Board 7-Bit EEPROM
鈥?Output Adjustment SET Pin
鈥?Output Guaranteed Monotonic Over-Temperature
鈥?Thin 8 Ld 3mmx3mm DFN (0.8mm max)
鈥?Pb-free available (RoHS compliant)
Applications
鈥?LCD Panels
Pinout
ISL45041
(8 LD TDFN)
TOP VIEW
OUT 1
AVDD 2
WP 3
GND 4
8
7
6
5
SET
SCL
SDA
VDD
Ordering Information
PART NUMBER
(Note)
ISL45041IRZ
ISL45041IRZ-T*
TEMP.
RANGE
PART
MARKING (擄C)
041Z
041Z
PACKAGE
(Pb-Free)
PKG.
DWG. #
0 to +85 8 Ld 3x3 TDFN L8.3X3A
0 to +85 8 Ld 3x3 TDFN L8.3X3A
Tape and Reel
ISL45041EVAL1Z Evaluation Board
*Please refer to TB347 for details on reel specifications.
NOTE: 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.
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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