The ISL24201 provides an 8-bit programmable current sink that

is used in conjunction with an external voltage divider and buffer

amplifier to generate a voltage source that is positioned between

the analog supply voltage and ground. The current sink’s

resolution is controlled by an external resistor, RSET, and the

span of the VCOM voltage is controlled by the voltage divider

resistor ratio and the source impedance of R1 and R2. This

device has an 8-bit data register and 8-bit EEPROM for storing a

volatile and a permanent value for its output. The ISL24201 has

an I2C bus interface that is used to read and write to its registers

and EEPROM. At power-up the EEPROM value is transferred to

the data register and output.

The ISL24201 is available in an 8 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

• 4.5V to 18V Analog Supply Voltage Operating Range

• 2.25V to 3.6V Logic Supply Voltage Operating Range

• 400kHz, I2C Interface

• On-Chip 8-Bit EEPROM

• Output Guaranteed Monotonic Over-Temperature

• Pb-free (RoHS-compliant)

Applications

• LCD Panel VCOM Generator

• Electrophoretic Display VCOM Generator

• Resistive Sensor Driver

• Low Power Current Loop