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austriamicrosystems announces new 144-channel dot matrix LED driver with industry's highest efficiency and smallest size
AS1119 drives 144 LEDs, creating colorful and smooth animations while extending battery life, features best dimming control and on-chip charge pump
The AS1119 leads the industry by driving the most LEDs, each with an 8bit dimming control and no external resistor required. Additionally, an 8bit analog current control allows fine tuning of each matrix to compensate for different brightness of different colors, or to adjust the white balance on RGB LEDs. The AS1119 incorporates 6 frames of memory for small animations or for use as a buffer to reduce host processor load, thereby saving energy and precious processing time. The AS1119 also extends battery life by including an onchip 320 mA charge pump which is required when LEDs require a higher voltage than the battery can supply, allowing continuous operation even under low battery voltage conditions.
Other features include control via a 1 MHz I²C compatible interface, open and shorted LED error detection, and lowpower shutdown current. Two modes of operation are offered making the AS1119 a very flexible part to design with -- single/bicolor mode to drive the maximum number of LEDs in two 8x9 matrix, or the RGB mode offering three times 5x6 matrix, allowing white balance by adjusting the analog current in each matrix.
"The AS1119 is the most advanced and smallest dot matrix LED driver available on the market," stated Rene Wutte, austriamicrosystems' Marketing Manager for Lighting. He continued, "It enables creative light design with the longest battery lifetime through our intelligent power management for mobile applications. It allows our customers to create unique looking devices while minimizing design effort through the AS1119's flexibility. The AS1119 also saves space & cost by reducing external component count, reducing connector pin count and the number of PCB layers."
Only 18 lines are required to drive all 144 LEDs. This is accomplished with austriamicrosystems' multiplexing technique called crossplexing. This allows reducing the line count on the PCB as well as fewer pins on the connectors, saving space & costs.
The AS1119 is available in a 36pin WL-CSP 3x3 mm package and operates over a temperature range of -40 to +85 °C over a wide 2.7 to 5.5 V power supply range. For more information on the AS1119 dot matrix LED driver, visit www.austriamicrosystems.com/LED-Driver/AS1119 .
Price & Availability
Available in volume now, the price for the AS1119 is $5.00 in 1000 piece quantities.
A demonstration board is available for the AS1119 LED driver. For technical support, visit http://www.austriamicrosystems.com/Technical-Support
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