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1
®
FN6189.1
ISL45041
TFT-LCD I
2
C 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 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 3mm x 3mm Thin DFN
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
• 128-Step Adjustable Sink Current Output
• 2.25V to 3.3V Logic Supply Voltage Operating Range
(2.25V Minimum Programming Voltage)
• 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 3.6V
•I
2
C Interface (Slave and Transmitter) - Address: 1001111
• On-Board 7-Bit EEPROM
• Output Adjustment SET Pin
• Output Guaranteed Monotonic Over Temperature
• Thin 8 Ld 3mm x 3mm DFN (0.8mm max)
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• LCD Panels
Pinout
ISL45041 (THIN DFN)
TOP VIEW
Ordering Information
PART NUMBER
(Note)
PART
MARKING
TEMP.
RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL45041IRZ 041Z 0 to 85 8 Ld Thin 3x3 DFN L8.3X3A
ISL45041IRZ-T 041Z 0 to 85 8 Ld Thin 3x3 DFN
Tape and Reel
L8.3X3A
ISL45041EVAL1 Evaluation Board
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are 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.
OUT
AVDD
WP
GND
1
2
3
4
8
7
6
5
SET
SCL
SDA
V
DD
Data Sheet April 4, 2006
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005, 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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