The MAX25222/MAX25222C are 4-channel TFT-LCD power ICs that provide symmetrical positive AVDD and negative NAVDD supplies as well as VGON and VGOFF gate supplies. In addition, a VCOM buffer with output voltage range above and below ground and a temperature measurement block are integrated.
These devices contain non-volatile memory so that the values of all outputs can be calibrated for the lifetime of the device (maximum five times).
Programming is carried out using the built-in I2C interface, which can also be used to read back diagnostic information. A stand-alone mode is available after the device has been programmed.
The temperature sensor interface block measures the temperature optionally allowing the VCOM output voltage to be adjusted depending on the measured temperature.
The MAX25222/MAX25222C include extensive diagnostics to aid in fulfilling the ASIL B safety level.
The MAX25222/MAX25222C are available in a TQFN package and operate in the -40°C to 125°C temperature range.