AS1105 LED Driver IC

4x8 matrix LED driver IC


  • Up to 32 LEDs in a 4x8 matrix
  • 4-bit PWM and resistor current control per matrix
  • BCD decoder


  • Drive high LED count very easily
  • Brightness adjustment of the matrix
  • Allows decoding for 7-segment LEDs

Product parameters

Outputs [#] 32
LED Current per Output [mA] 10
Features Multiplexed
Error Detection
LED-to-LED Matching [%] 3
Supply Voltage [V] 5.0
Package SOIC-20

General Description

The AS1105 is a SPI interfaced, dot-matrix LED driver IC for a 4x8 LED matrix or 4 7-segment LEDs. It includes a 4-bit PWM for the entire matrix and an external resistor can be used for analog current adjustment up to 10mA per LED.

This product suits for the following applications:

  • White goods
  • Public information displays
  • Personal electronics

Technical Documents

Type Description Language
Datasheet Document version 1.36 English
Application Note White goods English

Environmental Documents

Type Description Language
Material Declaration Form MDF_174970084_AS1105WL-T English
Material Declaration Form MDF_174970084_AS1105WL English

Other Information

Type Description Language
Block Diagram AS1105 Block Diagram English