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AS1109 LED Driver IC

8-channel 100mA direct LED driver IC


  • Open/Short error detection
  • Low current diagnostic mode
  • 100mA output current
  • 50MHz SPI interface


  • Improved picture quality & reduced maintenance cost through identifying defect LEDs & its position
  • No flickering during LED test
  • Highest brightness of LEDs
  • Allows high resolution external PWM via SPI

Product parameters

Outputs [#] 8
LED Current per Output [mA] 100
Error Detection Yes
Read-Back Yes
LED-to-LED Matching [%] 2
Supply Voltage [V] 3.0 to 5.5
Package SOIC150-16 \ SSOP150-16 \ TQFN(4x4)-16

General Description

The AS1109 is a 100mA 8-channel direct LED driver IC and offers on-chip diagnostics. It can detect open/short LED position during operation and offers a (flickerfree) low current diagnostic mode.

This product suits for the following applications:

  • Public information displays
  • Stadium displays
  • Illumination


Title Category Headline Buy
AS1109EvalKit Application Board Evaluation Kit for AS1109

Technical Documents

Name Type Description Version Language
AS1109_AN000137_1-00.pdf Application Note LED matrix display 1-00 English
AS1109_BD000247_1-00.png Block Diagram AS1109 Block Diagram 1-00 English
AS1109_DS000173_1-00.pdf Datasheet Document version 1.21 1-00 English
AS1109_PD000259_1-00.png Other Product Document AS1109EvalKit Image 1-00 English
AS1109_UG000180_1-00.pdf User Guide Evaluation board 1-00 English

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