DATASHEET
ISL24202 FN7587
Rev 0.00
March 15, 2011 Programmable VCOM Calibrator with EEPROM Features The ISL24202 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 ISL24202 has an 8-bit data register and 8-bit
EEPROM for storing both a volatile and a permanent value for
its output, accessible through a single up/down counter
interface pin (CTL). After the part is programmed with the
desired VCOM value, the Counter Enable pin (CE) can be
grounded to prevent further changes. On every power-up the
EEPROM contents are automatically transferred to the data
register, and the pre-programmed output voltage appears at
the VOUT pin. Adjustable 8-Bit, 256-Step, Current Sink Output On-Chip 8-Bit EEPROM Up/Down Counter Interface Guaranteed Monotonic Over-Temperature 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 Pb-free (RoHS-Compliant) Ultra-Thin 8 Ld TDFN (3 x 3 x 0.8mm Max) Applications LCD Panel VCOM Generator The ISL24202 can be used with a high output drive buffer
amplifier, which allows it to directly drive the VCOM input of an
LCD panel. Electrophoretic Display VCOM Generator Related Literature The ISL24202 is available in an 8 Ld 3mm x 3mm TDFN
package. This package has a maximum height of 0.8mm for …