Multiple Dimming Isolated PWM Controller for high-performance LED lighting

Multiple Dimming Isolated PWM Controller for high-performance LED lighting

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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

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

Features

  • 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

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 internal overtemperature protection (OTP) and it is available in the SOT26 package.

Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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