LED drivers suit LCD edge/direct-lit TVs

The 16-channel AS3820 and the 12-channel AS3821 LED driver ICs meet the needs of the most common architectures of both direct and edge-lit LED TVs. Both ICs feature ±0.2 % channel-to-channel accuracy to guarantee the best possible light uniformity and picture quality. The parts feature a unique power supply control technique which enables system efficiency.

The devices are programmable via a SPI port and provide built-in safety features, including thermal shutdown and open and short LED detection. Other features include linear current setting using a 10-bit DAC, output slew rate programmability, H-Sync and V-Sync inputs to synchronize with a TV, direct PWM mode, undervoltage auto-turnoff, overvoltage auto-turnoff, temperature shutdown and fault interrupt output.They are available in a 0.5-mm pitch QFN and 0.8-mm pitch LQFP package. (From $1.80 ea/1,000 — available now)

By Christina Nickolas

austriamicrosystems , Unetrremstaetten , Austria
U.S. Sales Office 408-345-1790

www.austriamicrosystems.com