Austriamicrosystems claims industry’s highest efficiency, smallest size for LED driver
The AS1130 drives 132 LEDs, each with an 8-bit dimming control and no external resistor required. Additionally, an 8-bit analog current control allows fine tuning of each current source to compensate for different brightness of different colors, or to adjust the white balance on RGB LEDs. The device incorporates 36 frames of memory for small animations or for use as a buffer to reduce host processor load, saving energy and processing time. The AS1130 LED driver can also extend battery life by controlling an external power supply (e.g. charge pump) which is required when LEDs need a higher voltage than the battery can supply, allowing continuous operation even under low battery voltage conditions.
"The AS1130 dot-matrix LED driver is designed to make driving LEDs an easier task,” commented Rene Wutte, Austriamicrosystems’ Marketing Manager for Lighting. “It enables driving a large number of RGB LEDs from one IC for creative light designs while providing the highest efficiency available, an important feature for both battery-powered and AC-powered applications. The AS1130’s features simplify design and programming, optimize total cost, and allow developers to provide the lighting features required to stay ahead in this market.”
In addition to the ultra-small sized CS-WLP-20, the AS1130 LED driver is also available in a gull winged SSOP-28 package, allowing easier handling in applications that are not so space sensitive. This makes the AS1130 a perfect replacement for indoor high pixel density video walls, easily replacing up to eight 16-channel PWM LED drivers, or reducing the complexity of externally (user designed) multiplexed systems.
Only 12 lines are required to drive all 132 LEDs. This is accomplished with the vendors multiplexing technique called cross-plexing. It reduces line count on the PCB as well as pins on the connectors, saving space & costs. Other features include control via a 1 MHz I²C compatible interface, open and shorted LED error detection, and low-power shutdown current.
The AS1130 LED driver operates over a temperature range of -40 to +85°C and a wide 2.7 to 5.5 V power supply range. Available now, the AS1130 is priced at $2.99 for the 20-pin CS-WLP and $3.99 for the SSOP-28 in 1000 piece quantities.
For more information on the AS1130 dot-matrix LED driver and the LED driver family, please visit www.austriamicrosystems.com/LED-driver/AS1130
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