The ISL24211 is an 8-bit programmable current sink that can be

used in conjunction with an external voltage divider to generate a

voltage source (VCOM) positioned between the analog supply

voltage and ground. The current sink’s full-scale range is

controlled by an external resistor, RSET. With the appropriate

choice of external resistors R1 and R2, the VCOM voltage range

can be controlled between any arbitrary voltage range. The

ISL24211 has an 8-bit data register and 8-bit EEPROM for storing

both a volatile and a permanent value for its output, with an I2C

interface to read and write to the register and EEPROM. After the

part is programmed, the I2C interface is no longer needed; on

power-up the EEPROM contents are automatically transferred to

the data register, and the pre-programmed output voltage

appears on the VCOM_OUT pin.

The ISL24211 also features an integrated, wide-bandwidth, high

output drive buffer amplifier that can directly drive the VCOM

input of an LCD panel.

The ISL24211 is available in an 10 Ld 3mm x 3mm TDFN

package. This package has a maximum height of 0.8mm for very

low profile designs. The ambient operating temperature range is

-40°C to +85°C.

Features

• 8-bit, 256-Step, Adjustable Sink Current Output

• 60MHz VCOM Buffer/Amplifier

• 4.5V to 19.0V Analog Supply Range for Normal Operation

(10.8V Minimum Analog Supply Voltage for Programming)

• 2.25V to 3.6V Logic Supply Voltage Operating Range

• 400kHz, I2C Interface

• On-Chip 8-Bit EEPROM

• Guaranteed Monotonic Over-Temperature

• Compatible with applications using the 7-bit ISL45041

• Pb-free (RoHS-compliant)

• Ultra-Thin 10 Ld TDFN (3 x 3 x 0.8mm max)

Applications

• LCD Panel VCOM Generator

• Electrophoretic Display VCOM Generato