Austriamicrosystems has introduced a new “green” LED driver to efficiently power high-resolution LED displays. The AS1123 16-channel constant-current LED driver is optimized for a single LED per output. The driver has an on-chip diagnostic read-back function and is designed for use in industrial applications, indoor/outdoor public information displays, LED panels, and large LED video walls. The AS1123 has a maximum LED supply voltage of 5.5 V and is optimized for LED panels where only a single LED is connected per output. According to the company, the optimization of the LED driver to those low supply voltages allows for up to 50 % lower VDS versus existing higher voltage output drivers. This reduction of VDS gives better efficiency resulting in lower power dissipation.
