Features: • 128-Step Adjustable Sink Current Output• 2.6V to 3.6V Logic Supply Voltage Operating Range• 4.5V to 20V Analog Supply Voltage Range• Rewritable EEPROM for storing the optimum VCOM value• Output Adjustment Enable/Disable Control• Output Guaranteed Mon...
ISL45042: Features: • 128-Step Adjustable Sink Current Output• 2.6V to 3.6V Logic Supply Voltage Operating Range• 4.5V to 20V Analog Supply Voltage Range• Rewritable EEPROM for storing...
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The VCOM voltage of an LCD panel needs to be adjusted to remove flicker. This part provides a digital interface to control the sink-current output that attaches to an external voltage divider. The increase in output sink current lowers the voltage on the external divider, which is applied to an external VCOM buffer amplifier. Once the desired VCOM setting is obtained, the settings can be stored in the nonvolatile memory, which would then be automatically recalled during every power-up.
The VCOM adjustment and non-volatile memory programming is through a single interface pin. An additional pin is used to prevent programming.
An external resistor attaches to the SET pin, and sets the full-scale sink current that determines the lowest voltage of the external voltage divider.
The ISL45042 is available in an 8-pin 3mm x 3mm Thin DFN package with a maximum thickness of 0.8mm for ultra thin LCD panel design.