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AS1117 LED Driver IC

64 LED matrix driver IC with 8 keys

Features

  • Up to 64 LEDs in an 8x8 matrix
  • 4-bit PWM per line/digit and Rext current control per matrix
  • LED error diagnostic
  • 8-key readback and EN pin

Benefits

  • Drive high LED count very easily
  • Individual brightness control of each digit/line
  • Improves picture quality & reduces test/maintenance time
  • Low BOM, complete user interface (UI) can be implemented

Product parameters

Outputs [#] 64
LED Current per Output [mA] 5
Features 8-keys, multiplexed; I²C interface, EN
Error Detection Yes
Read-Back Yes
LED-to-LED Matching [%] 3
Supply Voltage [V] 2.7 to 5.5
Package TQFN(4x4)-24

General Description

The AS1117 is a compact, I²C interfaced, dot-matrix LED driver IC for an 8x8 LED matrix or 8x 7-segment LEDs. It includes a 4-bit PWM for each segment and an external resistor can be used for analog current adjustment up to 5mA per LED. In addition the AS1117 can read back 8 keys and offers a detailed short/open LED diagnostic as well as an enable/reset pin.

This product suits for the following applications:

  • White goods
  • Home appliance
  • Personal electronics
  • Mobile phones
  • Medical devices

Resources

Name Type Description Language
AS1115-18_SW000189_2-00.zip Software Eval SW 2v40 English

Technical Documents

Name Type Description Version Language
AS1117_BD000253_1-00.png Block Diagram AS1117 Block Diagram 1-00 English
AS1117_DS000247_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