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AS1117 LED Driver IC

64LED matrix driver IC with 8keys

 
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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 4bit 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.

Key Features

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

Key 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 Facts

Outputs [#] 64
LED current per output [mA] 5
Features 8-keys, multiplexed; I²C interface, EN
Error detection
Read-back
LED-to-LED matching [%] 3
Supply voltage [V] 2.7 to 5.5
Package TQFN(4x4)-24

Additional Information

Applications
  • White Goods
  • Home appliance
  • Personal Electronics
  • Mobile Phones
  • Medical devices