LED backlight driver reduces design size by one-third

29-08-2018 | Maxim | Semiconductors

Automotive infotainment designers can now upgrade to bigger, higher resolution displays with greater ease, reduced cost and smaller solution size with the MAX20069 from Maxim Integrated Products. The device offers what is claimed to be the industry’s first solution integrating four I2C-controlled, 150mA LED backlight drivers and a four-output TFT-LCD bias in a single chip. The IC can lessen design footprint up to one-third compared to competitor’s parts.

Automotive displays are becoming larger and more sophisticated as vehicle manufacturers entice buyers with greater information and entertainment options. Market research suggests a 39% compound annual growth rate for the 8" display market in vehicle instrument clusters, centre stack and heads-up display systems. Instrument clusters are expected to move to 12.3" displays soon. As a result, infotainment system designers will need power solutions with precision, flexibility and small overall solution size to meet increasingly complex system requirements.

The device supports larger screen sizes and higher resolution by giving PAVVD and NAVDD, both of which are needed for LTPS that produce higher resolution and lower cost than amorphous silicon panels now in use. The IC also supports the high currents that next-generation displays need, with 150mA per channel in the four-channel LED driver for 8" or larger displays and higher resolutions. The device operates over the -40C to 105C ambient temperature range and is available in a 6mm x 6mm TQFN package.

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