ISL45045
®
Data Sheet
September 7, 2010
FN6123.3
2
I C LCD Module Calibrator
Features
The ISL45045 is specifically designed to work in notebook
applications where the system’s EEPROM is powered up
before the rest of the devices on the I C bus. This enables
• 128-Step Adjustable Sink Current Output
• 2.25V to 3.6V Logic Supply Voltage Operating Range
(2.6V Minimum Programming Voltage)
2
data to be downloaded to a graphics card. The ESD
protection scheme on the SDA, SCL and SCL_S pins
• 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
2
prevent the loading of the I C bus during the initialization
period prior to full power-up of the notebook.
• SDA, SCL, SCL_S pins tolerant to system power-up
sequences (i.e will not alter I C bus state)
2
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 two-wire
2
• I C Interface (Slave and Transmitter) -- Address: 1001111
• On-board 7-bit EEPROM
• Output adjustment SET Pin
• Output Guaranteed Monotonic Over-Temperature
• Thin 10 Ld 3mmx3mm DFN (0.8mm max)
• Pb-Free (RoHS Compliant)
2
I C serial interface. At power-up, the part automatically
comes up at the last programmed setting in an on-board
7-bit EEPROM.
Applications
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.
• LCD Panels
Pinout
The ISL45045 is available in an 10 Ld 3mmx3mm TDFN
package with a maximum thickness of 0.8mm for ultra thin
LCD panel design.
ISL45045
(10 LD TDFN)
TOP VIEW
Ordering Information
SET
OUT
10
9
1
2
3
4
5
PART
NUMBER
(Note)
TEMP.
RANGE
(°C)
PKG.
DWG.
#
PART
MARKING
PACKAGE
(Pb-Free)
AVDD
WPn
WPp
GND
SCL_S
SCL
8
ISL45045IRZ
045Z
0 to +85 10 Ld 3x3 TDFN L10.3x3A
0 to +85 10 Ld 3x3 TDFN L10.3x3A
7
SDA
6
VDD
ISL45045IRZ-T* 045Z
*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.
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, 2007, 2010. All Rights Reserved.
1
All other trademarks mentioned are the property of their respective owners.
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