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AS1122 LED Driver IC

12-channel 40mA 30V PWM LED driver IC


  • 12-bit PWM control (4096 steps)
  • 6-bit analog current control
  • 30V output drivers
  • Controlled inrush current


  • 6.8 billion colors
  • RGB LED white point adjustment
  • Usage of 24V industrial power lines
  • Good EMI performance

Product parameters

Outputs [#] 12
LED Current per Output [mA] 40
Features 12-bit PWM, 6-bit DOT, low EMI, slim interface
Error Detection Yes
Read-Back Yes
LED-to-LED Matching [%] 1.5
Supply Voltage [V] 2.7 to 3.6
Package TQFN(4x4)-24

General Description

The AS1122 is a 40mA 12-channel direct LED driver IC with 12-bit internal PWM and 6-bit analog current adjustment. It can detect open LED position during operation. The AS1122 allows up to 30V on the LED outputs and is optimized for EMI performance.

This product suits for the following applications:

  • Public information displays
  • Stadium displays
  • Illumination
  • Ambient light
  • TV ambient light


Title Category Headline Buy
AS1122EvalKit Application Board Evaluation Kit for AS1122


Name Type Description Language Software Eval SW 1-0-8-0 English

Technical Documents

Name Type Description Version Language
AS1122_BD000356_1-00.png Block Diagram AS1122 Block Diagram 1-00 English
AS1122_DS000330_1-00.pdf Datasheet Document version 1-02 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
AS1122_UG000136_1-00.pdf User Guide Demo board 1-00 English

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