AS1104 LED Driver IC

40mA 4-channel direct LED driver IC


  • 4 channel 40mA driver
  • 150mV headroom to operate
  • PWM input
  • External resistor


  • High brightness LEDs
  • Excellent efficiency & battery lifetime
  • High resolution dimming possible
  • Anaolg dimming or current control

Product parameters

Outputs [#] 4
LED Current per Output [mA] 40
Features Simple drive
Error Detection
LED-to-LED Matching [%] 3
Supply Voltage [V] 2.2 to 3.6
Package MSOP-8

General Description

The AS1104 is a high efficient direct LED driver IC. It offers 4 40mA outputs which can be dimmed with an external PWM and adjusted in analog current with an resistor. It only requires 150mV headroom voltage to operate.

This product suits for the following applications:

  • Small display backlight
  • Keyboard backlight
  • Music player backlight

Technical Documents

Type Description Language
Datasheet Document version 1.5 English

Other Information

Type Description Language
Block Diagram AS1104 Block Diagram English