廬
ISL45042A
Data Sheet
August 29, 2007
FN6158.3
LCD Module Calibrator
The V
COM
voltage of an LCD panel needs to be adjusted to
remove flicker. The ISL45042A can be used to digitally
adjust a panel鈥檚 V
COM
voltage by controlling its output sink
current. The output of the ISL45042A is connected to an
external voltage divider and an external V
COM
buffer
amplifier. In this application, the user can control the V
COM
voltage with 7-Bit accuracy (128 steps). Once the desired
V
COM
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 V
COM
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 ISL45042A is set using an
external resistor connected to the SET pin. The full-scale
sink current determines the lowest voltage of the external
voltage divider.
The ISL45042A is available in an 8 Ld 3mmx3mm TDFN
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 V
COM
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 available (RoHS compliant)
Applications
鈥?LCD Panels
Ordering Information
PART NUMBER
(Note)
ISL45042AIRZ
ISL45042AIRZ-T*
TEMP.
RANGE
PART
(擄C)
MARKING
42AZ
42AZ
PACKAGE
(Pb-Free)
PKG.
DWG. #
L8.3x3A
L8.3x3A
-40 to +85 8 Ld 3x3 TDFN
-40 to +85 8 Ld 3x3 TDFN
Tape and Reel
-40 to +85 8 Ld 3x3 TDFN
Tape and Reel
Pinout
ISL45042A
(8 LD TDFN)
TOP VIEW
OUT 1
AVDD 2
N/C 3
GND 4
8
7
6
5
SET
CE
CTL
V
DD
ISL45042AIRZ-TK* 42AZ
L8.3x3A
*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.
1
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 漏 Intersil Americas Inc. 2005, 2006, 2007. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
1
2
3
4
5
6
7
8
