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The AS3820 and AS3821 have channel-to-channel accuracy of ±0.2%, providing optimum light uniformity and picture quality, and are the most accurate products on the market today. In addition, the ICs feature a unique base current error compensation feature that can be used to drive external power MOSFETs and drive low cost, low current gain bipolar transistors.
The driver IC uses Austrian Microelectronics' unique power control technology to achieve optimum system efficiency. This technology reduces the number of external components required and provides fast response times and direct control of the output voltage of any standard DC-DC converter. This direct control function is very helpful for the design of new 3D TVs.
In addition, the two ICs also adopt a new adjustment concept, because they do not need to connect the drain pins of external transistors, and will not be exposed to the high-voltage LED power supply environment. This allows for greater flexibility in the maximum number of LEDs that can be driven per channel, resulting in very high ESD performance.
These components can be programmed via the SPI port and provide built-in security features including thermal power down, LED open and short circuit detection. Other features include linear current settings with 10-bit DAC, programmable output slew rate, H-Sync and V-Sync inputs synchronized to the TV, direct PWM mode, undervoltage auto shutdown, overvoltage auto shutdown, temperature shutdown And fault interrupt output, etc. 
Austriamicrosystems announces third-generation TV LED driver ICs
Austrian Microsystems (Austriamicrosystems) announced the official launch of the third generation of LED driver IC AS382x series, including 16-channel AS3820 and 12-channel AS3821, which are available in 0.5mm pitch QFN package and 0.8mm pitch LQFP. Packaged for direct-lit and edge-lit LCD TVs, minimizing energy consumption while optimizing TV picture quality.