ams AG - global leader in the design and manufacture of high performance analog ICs (integrated circuits)

AS3691 LED Driver

4x400mA precision current source driving RGB and white color LEDs for general lighting

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The AS3691 features four high precision current sources for driving up to four LED strings (RGB or single color leds). Each of the four currents sources can be controlled independently by PWM inputs. The full scale current value is set by external resistors.

Key Features

  •  4 x 400mA constant current outputs
  •  Programmable with external resistors
  •  4 independent PWM inputs
  •  Absolute current accuracy ±0.5%
  •  Automatic Supply Regulation to reduce power dissipation

Product Facts

Outputs [#] 4
LED current per output [mA] 400
Features Slew rate contr.
Error detection
LED-to-LED matching [%] 0.5
Supply voltage [V] Main Supply
Package QFN24 or

Additional Information

  •  General Lighting
  •  Backlighting
  •  RGB Backlighting for LCD
  •  White Color Balancing