AnologicTech release LED display driver

AAT2830/31 released the day before AnalogicTech display driver chip, it is in a small package of 4 * 4mm, a high performance charge pump with backlight, flash and RGB driver realized the integration, and through a serial interface control. The use of the chip can reduce the total number of components, thereby reducing the size of the system. It provides a high degree of integration and configurability for designers of mobile phones and portable systems.

AAT2830/31 is a highly integrated and comprehensive display solutions, suitable for the use of monolithic lithium batteries and other portable mobile phone system. The charge pump device containing a high efficiency mode, can provide up to 600mA current for lighting applications is increasing at present in portable system, including display backlight, photographic flash system and auxiliary systems, RGB or auxiliary lighting and state. Control of single wire AS2Cwire serial digital interface circuit driving each function independently can be patented by AnalogicTech.

Due to mobile phone and portable system designers to expand the application of lighting function, these applications include the main panel and the backlight panel affiliated with film mode, the camera flash, RGB performance status and keyboard backlight. Any non integral application of these subsystems will have direct conflict with the requirements of minimizing the size of the system. AnalogicTech's AAT2830/31 chip can help designers solve many of these problems.

When AAT2830/31 chip used in the light emitting diode (LED) backlight applications, can drive up to 6 output ports, adjustable driving current up to 30mA (each port can be set by an external resistor). Due to the separate control for each channel, the designer in the design, can give a main display panel drive 4 LED, and a panel attached to drive 2 LED, or 6 LED of all the design to a display panel. By using the AS2Cwire serial interface, can also be divided into 16 levels, the brightness of LED arbitrary regulation.

When AAT2830/31 is used for photographic flash function, which consists of 4 independent channels will provide a total of up to 600mA of current of each channel is adjustable current can be as high as 150mA. In addition, AAT2830/31 supports both flash and movie mode operation. By adjusting its 3 auxiliary output ports, the current of up to 60mA is used in RGB, keyboard, or state lighting applications. Enough to provide high efficiency charge pump power modes of AAT2830/31, can run all 3 classes of LED and RGB at the same time, flash - backlight.

Using AS2Cwire AnalogicTech interface, can be on the backlight, flash and RGB programmable settings. AAT2830 color RGB driver can deploy 4096 color / keyboard brightness settings. For portable devices that use a smaller screen size, the AAT2831 driver of the RGB can be configured with 64 color / keyboard brightness settings.

In order to make LED from heat damage, AAT2830/31 also comes with a built-in flash timer, the longest time of LED lighting it can withstand the limit. At the same time, this unique feature also helps in the use of flash operation, the battery consumption is reduced to a minimum.

The rated operating temperature range of AAT2830/31 is from -40 to +85. The device is expected to be available in December 2006, which will be available in lead free, enhanced heat dissipation, 24 pin QFN44 packages.