ISL45042_11 Datasheet, PDF (1/9 Pages) Intersil Corporation – LCD Module Calibrator

Data Sheet
April 13, 2011
ISL45042
FN6072.9
LCD Module Calibrator
The V_COM voltage of an LCD panel needs to be adjusted to
remove flicker. The ISL45042 can be used to digitally adjust
a panel’s V_COM voltage by controlling its output sink current.
The output of the ISL45042 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 ISL45042 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 ISL45042 is available in an 8 Ld 3mmx3mm TDFN
package with a maximum thickness of 0.8mm for ultra thin
LCD panel design.
Pinout
ISL45042
(8 LD TDFN)
TOP VIEW
OUT 1
AVDD 2
DNC 3
GND 4
8 SET
7 CE
6 CTL
5 V_DD
Features
• 128-Step Adjustable Sink Current Output
• 2.6V to 3.6V Digital Supply Voltage Operating Range
(3.0V Minimum Programming Voltage)
• 4.5V to 20V Analog Supply Voltage Operating Range
(10.8V Minimum Programming Voltage)
• Rewritable EEPROM for Storing the Optimum V_COM Value
• Output Adjustment Enable/Disable Control
• Output Guaranteed Monotonic Over-Temperature
• Two Pin Adjustment, Programming and Enable
• Ultra Thin 8 Ld 3mmx3mm DFN (0.8mm Max)
• Pb-Free (RoHS Compliant)
Applications
• LCD Panels
Ordering Information
TEMP.
PART NUMBER PART RANGE
(Notes 1, 2, 3) MARKING (°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL45042IRZ
042Z
-40 to +85 8 Ld 3x3 TDFN L8.3x3A
NOTES:
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 ISL45042. For more information on MSL please see
techbrief TB363.
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 trademark owned by Intersil Corporation or one of its subsidiaries.
Copyright © Intersil Americas Inc. 2005-2008, 2011. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.