Multiple Dimming Isolated PWM Controller for high-performance LED lighting

Diodes AL8116

Diodes Incorporated announced the availability of the versatile dimming input controller for offline LED lamps. AL8116 works with three types of dimmer signal formats:

  1. 0 to 10 V dimming voltage
  2. PWM (Pulse Width Modulation) signal
  3. Simple potentiometer

 Diodes - AL8116

It converts these to a PWM output signal which can easily be used to provide an isolated dimming control via an opto-coupler to the primary side LED driver.

AL8116 Typical Application Circuit
AL8116 Typical Application Circuit.

The AL8116 has a wide supply voltage range from 10 V to 56 V. The AL8116 Output Duty Cycle accuracy is typically ±2.5% and its minimum Output Duty cycle can be set through a CLAMP pin resistor.

The AL8116 has an internal overtemperature protection (OTP) and it is available in the SOT26 package.


  • Wide VCC Operating Range 10 V to 56 V
  • Low Operation Current (Typical 600 μA)
  • Precision Dimmer Type with
  • Voltage Potential: 0/1 V to 10 V
  • PWM Dimming: 0.2 kHz to 10 kHz
  • Potentiometer: 0 to 100 kΩ
  • Adjustable Bias Current Source of DIM Pin
  • Accurate Output Duty Cycle Tolerance ±2.5%
  • Adjustable Minimum Output PWM Duty Clamping: 8%, 6%, 4%, and 2%
  • Built-In Over Temperature Protection for Chip
  • Totally Lead-Free & Fully RoHS Compliant

1-4 Layer PCBs $2

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