ISL45041

Features:

• 128-Step Adjustable Sink Current Output
• 2.25V to 3.3V 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
• I²C Interface (Slave and Transmitter) - Address: 1001111
• On-Board 7-Bit EEPROM
• Output Adjustment SET Pin
• Output Guaranteed Monotonic Over Temperature
• Thin 8 Ld 3mm x 3mm DFN (0.8mm max)
• Pb-Free Plus Anneal Available (RoHS Compliant)




Application

• LCD Panels




Pinout






Specifications

V_DD to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+4V
Input Voltages to GND
SET . . . . . . . . . . . . . . . . . . . . . . . . . . . .......... . . . . . . . . . -0.3V to +4V
AVDD . . . . . . . . . . . . . . . . . . . . . . . . . ........... . . . . . . . . . -0.3V to +20V
Output Voltages to GND
OUT . . . . . . . . . . . . . . . . . . . . . . . . . . ........... . . . . . . . . . -0.3V to +20V
ESD Rating
HBM for Device . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . .2kV
HBM for Input Pins (SCL, SDA) . . . . . . . . . ... . . . . . . . . . . . . . .4kV




Description

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 2-wire I2C serial interface. At power up the part automatically comes up at the last programmed EEPROM setting. 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 ISL45041 is available in an 8 Ld 3mmx3mm TDFN package with a maximum thickness of 0.8mm for ultra thin LCD panel design. An evaluation kit complete with software to control the DCP from a computer is available. Reference Application note AN1207 and Ordering Information.