Panasonic launched 67 million color LED display driver LSI

Panasonic semiconductor (Panasonic Semiconductor) has developed a 67 million color LED display can be achieved by the 3 channel LED driver AN30259A, will begin in April 2009 Sample supply. In addition to the 4 files can be set to the maximum LED drive current, but also by adding 8bit (level 256) resolution of the current function of the independent of the 3 channels set up to achieve a 67 million color LED display. 3 channels using red, green, blue LED, can display 67 million 108 thousand and 864 colors. LED lighting applications for mobile phones and other electronic products. The company said that after the LED driver can display up to 2 million 100 thousand colors.

In addition, the lighting control mode by using self-developed LED, to achieve a similar "firefly glow" smooth brightness adjustment: (1) LED light after the light gradually; (2) to achieve the most bright; (3) from the light to dark gradually; (4) the minimum brightness on or off. Specific approach is, in addition to equipped with 128 gray PWM control current value function, but also equipped with a free to set the time to turn on / turn off the lights and lighting time, etc.. The supply voltage is 3.6V/1.8V.

In addition, a clock input and output terminal for simultaneously controlling a plurality of AN30259A is also provided. Through a maximum of four AN30259A series, the realization of the separate drive and synchronization control of the 12 channels. When using this feature, by combining the lights on / off time, or improve the configuration of the LED, can display colorful characters, etc..

Package size, by optimizing the circuit design of each function block sharing circuit, current distribution, can improve the driving ability and mask design (Mask Layout), the 1.56mm * 1.26mm * 0.75mm "minimum industry" (the company) package. Package using 12 terminal epitaxial wafer level CSP (WLCSP).