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AS1123 LED Driver IC

16-channel 40mA direct LED driver IC


  • Open/Short error detection
  • Low current diagnostic mode
  • 5V output drivers
  • 50MHz SPI interface


  • Improved picture quality & reduced maintenance cost through identifying defect LEDs & its position
  • No flickering during LED test
  • Best energy efficiency for 5V systems
  • Allows high resolution external PWM via SPI

Product parameters

Outputs [#] 16
LED Current per Output [mA] 40
Features Low Vds
Error Detection Yes
Read-Back Yes
LED-to-LED Matching [%] 3
Supply Voltage [V] 3 to 5.5
Package QSOP-24; TQFN(4x4)-24

General Description

The AS1123 is a 50MHz SPI interfaced, 40mA 16-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. The AS1123 operates in 5V enviroment and is optimized for energy efficiency.

This product suits for the following applications:

  • Public information displays
  • Stadium displays
  • Illumination


Name Type Description Language Software Eval SW 1v02 English

Technical Documents

Name Type Description Version Language
AS1123_BD000257_1-00.png Block Diagram AS1123 Block Diagram 1-00 English
AS1123_DS000215_1-00.pdf Datasheet Document version 1.00 1-00 English
AS11xx_AS13xx_AS17xx_AS349x_AS36xx_EN000160_1-00.pdf EoL Notification AS11xx_AS13xx_AS17xx_AS349x_AS36xx (issued 2018-Oct) 1-00 English
AS1123_UG000184_2-00.pdf User Guide Demo board 2-00 English

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