ISL24212: Programmable VCOM Calibrator with EEPROM and Output Buffer

The ISL24212 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 sinks 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 ISL24212 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 VCOM_OUT pin.

The ISL24212 also features an integrated, wide-bandwidth, high output drive buffer amplifier that can directly drive the VCOM input of an LCD panel.

The ISL24212 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.

Key Features
  • Adjustable 8-bit, 256-Step, Current Sink Output
  • 60MHz VCOM Buffer/Amplifier
  • 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 10 Ld TDFN (3x3x0.8mm max)
Applications
  • LCD Panel VCOM Generator
  • Electrophoretic Display VCOM Generator
Typical Diagram
Datasheets
TitleTypeUpdatedSizeOther Languages
ISL24212 DatasheetPDF17 Nov 2014459 KB
Software
TitleTypeUpdatedSizeOther Languages
ISL24212IRTZ-EVALZ Software Installer v1.0EXE07 Oct 2014368 KB
User Guides
TitleTypeUpdatedSizeOther Languages
ISL24212IRTZ-EVALZ User GuidePDF13 Nov 2014619 KB
Order Information
Part NumberPackage TypeWeight(g)PinsMSL RatingPeak Temp (°C)RoHS Status
ISL24212IRTZ10 Ld DFN0.022101260RoHS
ISL24212IRTZ-T1310 Ld DFN T+R0.022101260RoHS
Datasheet
ISL24212 Datasheet 17 Nov 2014
Other
ISL24212IRTZ-EVALZ User Guide 13 Nov 2014
ISL24212
ISL24212IRTZ-EVALZ Software Installer v1.0 07 Oct 2014
10 Ld DFN T+R ISL54061