Kirchheim/Teck, Germany—Dialog Semiconductor's new DA9026 controller is designed to program up to 18 light-emitting diodes (LEDs) for running the "fun lights," light shows, and backlighting in cellular handsets, handheld games, and other portable devices. It incorporates on-chip memory to store up to 15 light-pattern sequences and can drive separate red, green and blue LEDs (i.e., six RGB LEDs) using precision current d/a converters (DACs). Programmable variables include pattern, repetition rate, intensity of each LED, and sequence duration.
Typically, the DA9026 preloads sequence data to its RAM on power-up using a single 2-wire interface and the user activates the desired sequences. A comprehensive PC-based development tool allows handset manufacturers to create and program the control code required to generate these sequences.
Other chip features include high-current capability (up to 420 mA at 4.8 volts) for high-brightness displays, fading and dimming functionality without the need for processor support, brightness correction for true RGB color, and a step-up converter to generate the higher voltages required for high-intensity blue, green and white LEDs. The chip's 4-bit current control enables 4,000 color options per RGB channel. A product data sheet is available at www.dialog-semiconductor.com/download/Dialog_DA9026_Productbrief_EN.pdf.
The DA9026, packaged in a 24-lead 4-by-4 mm QFN package, is priced at $1.50 each in 1k quantities.
Dialog Semiconductor, +49-7021-805-412, www.dialog-semiconductor.com