ISL45045IRZ

ISL45045IRZ Datasheet

ISL45045

Part	Datasheet
ISL45045IRZ	ISL45045IRZ (pdf)

Related Parts	Information
ISL45045IRZ-T	ISL45045IRZ-T

PDF Datasheet Preview
Data Sheet September 7, 2010 ISL45045 FN6123.3 I2C LCD Module Calibrator 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 I2C bus. This enables data to be downloaded to a graphics card. The ESD protection scheme on the SDA, SCL and SCL_S pins prevent the loading of the I2C bus during the initialization period prior to full power-up of the notebook. 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 I2C serial interface. At power-up, the part automatically comes up at the last programmed setting in an on-board 7-bit EEPROM. 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 ISL45045 is available in an 10 Ld 3mmx3mm TDFN package with a maximum thickness of 0.8mm for ultra thin LCD panel design. Ordering Information Note TEMP. PART RANGE MARKING °C PACKAGE Pb-Free PKG. DWG. ISL45045IRZ 045Z 0 to +85 10 Ld 3x3 TDFN L10.3x3A ISL45045IRZ-T* 045Z 0 to +85 10 Ld 3x3 TDFN L10.3x3A *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. • 128-Step Adjustable Sink Current Output • 2.25V to 3.6V Logic Supply Voltage Operating Range 2.6V 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 • SDA, SCL, SCL_S pins tolerant to system power-up sequences i.e will not alter I2C bus state • I2C 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 • LCD Panels Pinout ISL45045 10 LD TDFN TOP VIEW OUT 1 AVDD 2 WPn 3 WPp 4 GND 5 10 SET 9 SCL_S 8 SCL 7 SDA 6 VDD 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, All Rights Reserved. All other trademarks mentioned are the property of their respective owners. ISL45045 Pin Descriptions TYPE PULL U/D FUNCTION Output Adjustable Sink Current Output Pin. The Current sinks into the OUT pin is equal to the DAC setting times the maximum adjustable sink current divided by See SET pin function description for the maximum adjustable sink current setting. AVDD Supply High-Voltage Analog Supply. Bypass to GND with 0.1µF Capacitor. EQUIVALENT CIRCUIT 500Ω OUT GND AVDD GND >600kΩ >600kΩ WPn WPp GND VDD SDA Input Pull-Down Write Protection Active Low. CMOS Level.

PDF Datasheet Preview

Data Sheet

September 7, 2010

ISL45045

FN6123.3

I2C LCD Module Calibrator

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 I2C bus. This enables data to be downloaded to a graphics card. The ESD protection scheme on the SDA, SCL and SCL_S pins prevent the loading of the I2C bus during the initialization period prior to full power-up of the notebook.

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 I2C serial interface. At power-up, the part automatically comes up at the last programmed setting in an on-board 7-bit EEPROM.

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 ISL45045 is available in an 10 Ld 3mmx3mm TDFN package with a maximum thickness of 0.8mm for ultra thin LCD panel design.
Ordering Information

Note

TEMP. PART RANGE MARKING °C

PACKAGE Pb-Free

PKG. DWG.

ISL45045IRZ 045Z
0 to +85 10 Ld 3x3 TDFN L10.3x3A

ISL45045IRZ-T* 045Z
0 to +85 10 Ld 3x3 TDFN L10.3x3A
*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.
• 128-Step Adjustable Sink Current Output
• 2.25V to 3.6V Logic Supply Voltage Operating Range
2.6V 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
• SDA, SCL, SCL_S pins tolerant to system power-up
sequences i.e will not alter I2C bus state
• I2C 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
• LCD Panels

Pinout

ISL45045 10 LD TDFN

TOP VIEW

OUT 1 AVDD 2

WPn 3 WPp 4 GND 5
10 SET 9 SCL_S 8 SCL 7 SDA 6 VDD

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, All Rights Reserved.

All other trademarks mentioned are the property of their respective owners.

ISL45045

Pin Descriptions

TYPE PULL U/D

FUNCTION

Output

Adjustable Sink Current Output Pin. The Current sinks into the OUT pin is equal to the DAC setting times the maximum adjustable sink current divided by See SET pin function description for the maximum adjustable sink current setting.

AVDD

Supply

High-Voltage Analog Supply. Bypass to GND with 0.1µF Capacitor.

EQUIVALENT CIRCUIT
500Ω

OUT GND

AVDD GND
>600kΩ >600kΩ

WPn WPp GND VDD SDA

Input Pull-Down Write Protection Active Low. CMOS Level.

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Datasheet ID: ISL45045IRZ 639159