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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

Output [#] 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 (flicker-free) low current diagnostic mode.

Not Recommended for New Designs
ams AG is discontinuing production of this device. Final lifetime buy order must be placed by June 30, 2021. Please contact your local sales representative for further information.

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

Type Description Language
Datasheet Document version 1.21 English
Application Note LED matrix display English

Environmental Documents

Type Description Language
Material Declaration Form MDF_176560035_AS1109-BSOU English
Material Declaration Form MDF_176560035_AS1109-BSOT English
Material Declaration Form MDF_176560037_AS1109-BQFT English
Material Declaration Form MDF_176560037_AS1109-BQFR English
RoHS Certificate RoHS Certificate_AS1109 English


Type Description Language
EoL Notification AS1xxx, AS25xx, AS3xxx, AS73211, AS89020, SL900A, TMD4704 (issued 2020-Dec) English

Other Information

Type Description Language
Block Diagram AS1109 Block Diagram English
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