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ISL45042
Data Sheet
November 14, 2006
FN6072.6
LCD Module Calibrator
The VCOM voltage of an LCD panel needs to be adjusted to
remove flicker. The ISL45042 can be used to digitally adjust
a panel鈥檚 VCOM voltage by controlling its output sink-
current. The output of the ISL45042 is connected to an
external voltage divider and an external VCOM buffer
amplifier. In this application, the user can control the VCOM
voltage with 7 Bit accuracy (128 steps). Once the desired
VCOM setting is obtained, the settings can be stored in the
non-volatile EEPROM memory, which would then be
automatically recalled during every power-up.
The VCOM adjustment and non-volatile memory
programming is through a single interface pin (CTL). Once
the desired programmed value is obtained the Counter
Enable pin (CE) can be used to prevent further adjustment
or programming.
The full-scale sink current of the ISL45042 is set using an
external resister connected to the SET pin. The full-scale
sink current determines the lowest voltage of the external
voltage divider.
The ISL45042 is available in an 8 Ld 3mmx3mm Thin DFN
package with a maximum thickness of 0.8mm for ultra thin
LCD panel design.
Features
鈥?128-Step Adjustable Sink Current Output
鈥?2.6V to 3.6V Logic Supply Voltage Operating Range
鈥?4.5V to 20V Analog Supply Voltage Range
鈥?Rewritable EEPROM for storing the optimum VCOM value
鈥?Output Adjustment Enable/Disable Control
鈥?Output Guaranteed Monotonic Over Temperature
鈥?Two Pin Adjustment, Programming and Enable
鈥?Ultra Thin 8 Ld 3mmx3mm DFN (0.8mm max)
鈥?Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
鈥?LCD Panels
Ordering Information
TEMP.
RANGE
PART
(掳C)
PART NUMBER MARKING
ISL45042IR
ISL45042IR-T
042I
042I
PKG.
DWG. #
PACKAGE
-40 to +85 8 Ld 3x3 Thin DFN L8.3x3A
-40 to +85 8 Ld 3x3 Thin DFN L8.3x3A
Tape and Reel
-40 to +85 8 Ld 3x3 Thin DFN L8.3x3A
(Pb-free)
-40 to +85 8 Ld 3x3 Thin DFN L8.3x3A
Tape and Reel
(6k pcs) (Pb-free)
-40 to +85 8 Ld 3x3 Thin DFN L8.3x3A
Tape and Reel
(1k pcs) (Pb-free)
Pinout
ISL45042
(8 LD THIN DFN)
TOP VIEW
OUT 1
AVDD 2
N/C 3
GND 4
8
7
6
5
SET
CE
CTL
V
DD
ISL45042IRZ
(Note)
ISL45042IRZ-T
(Note)
042Z
042Z
ISL45042IRZ-TK 042Z
(Note)
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.
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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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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2003, 2005-2006. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
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