Date: 22/09/2010

Two 16-channel whiteLED driver ICs from austriamicrosystems enhances TV viewing

austriamicrosystems has released two new LED driver ICs aimed at delivering for bright and brilliant video images. The two LED driver ICs include:
--AS3695A, a 16-channel white LED driver for direct lighting.
--AS3695C, a 16-channel white LED controller for edge lighting.

Both ICs feature good driver accuracy of +/-0.5% which according toaustriamicrosystems guarantees exact brightness. Both ICs features a color matching and channel-to-channel current matching is +/-0.2%, therefore delivering good lighting contrast ratios for 3D effects. The AS3695A and AS3695C include novel power feedback regulation for controlling external power supplies for reduced power in LED backlit LCD TVs.

"austriamicrosystems is well known for producing the best ICs for driving LED backlighting systems," stated Markus Luidolt Marketing Manager Panel Lighting at austriamicrosystems. "Because of their outstanding performance, our drivers have been designed into many top TV brands all over the world. This early market dominance has helped us to better understand direct and edge type TVs and has resulted in this next generation of LED drivers."

The devices are programmable via a SPI (serial peripheral interface) port and provide built-in safety features such as 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.

Price:
AS3695A QFN: US$2.10 for 1K pieces.
AS3695C QFN: US$2.20 for 1K pieces
AS3695C LQFP: US$2.70 for 1K pieces

Availability: Sampling now