AS1119 - austriamicrosystems AG

AS1119 144-LED Cross-Plexing Driver

The AS1119 is a compact LED driver for 144 (90) single LEDs. The devices can be programmed via an I²C compatible interface. The AS1119 offers two blocks driving each 72 LEDs (3 blocks each 30LEDs) with 1/9 (1/6) cycle rate. The required lines to drive all 144 (90 )LEDs are reduced to 18 by using the cross-plexing feature optimizing space on the PCB. Every bl.

Features

very low shutdown and operational current. The device is available in a ultrasmall 36-pin WL-CSP. 2 Key Features 1MHz I²C-Compatible Interface Open and Shorted LED Error Detection 144 LEDs in Dot Matrix Low-Power Shutdown Current Individual 8-bit LED PWM Control 8-bit Analog Brightness Control (1:1), 2:3, 1:2 320mA Charge Pump 6 Frames Memory for Animations System-clk synchronisation for multiple devices Supply Voltage Range: 2.7V to 5.5V Minimum PCB space required 36-pin WL-CSP package Figure 1. AS1119 - Typical Application Diagram 3 Applications The AS1119 is ideal for dot matrix displays.