Diodes Incorporated

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AL8806Q (Not Recommended for new design)

NRND = Not Recommended for New Design


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The AL8806Q is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to 8 LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 6V to 30V. The AL8806Q switches at frequencies up to 1MHz. This allows the use of small size external components, hence minimizing the PCB area needed.
Maximum output current of AL8806Q is set via an external resistor connected between the VIN and SET input pins. Dimming is achieved by applying either a DC voltage or a PWM signal at the CTRL input pin. An input voltage of 0.4V or lower at CTRL switches off the output MOSFET simplifying PWM dimming.
The AL8806Q has been qualified to AEC-Q100 Grade 1 and is Automotive Grade supporting PPAPs.


  • LED driving current up to 1.5A
  • Better than 5% accuracy
  • High efficiency up to 98%
  • Optimally controlled switching speeds
  • Operating input voltage from 6V to 30V
  • PWM/DC input for dimming control
  • Built-in output open-circuit protection
  • Automotive Grade with AEC-Q100 Qualification
  • MSOP-8EP: Available in “Green” Molding Compound (No Br, Sb)
    • Totally Lead-Free & Fully RoHS Compliant 
    • Halogen and Antimony Free. “Green” Device
  • Automotive Grade
    • Qualified to AEC-Q100 Standards for High Reliability
    • PPAP Capable 


  • Automotive LED Lamps
  • Multi-Die LED Driver

Product Specifications

Product Parameters

AEC-Q100 Grade 1
Compliance (Only Automotive supports PPAP) Automotive
Dimming Yes
Dimming (Analog) Yes
Dimming (PWM) Yes
Efficiency (%) 97
LED Current Accuracy (%) 5
MaximumInput Voltage (V) 30
Maximum LED Current (A) 1.5
Maximum Output Voltage (V) 30
MinimumInput Voltage (V) 6
OperatingTemperatureRange  (°C) -40 to 125
Compliance (Only Automotive supports PPAP) Yes
Preset LED Current (A) N/A
AEC Qualified Yes
Sense Voltage (mV) 100
Switching Frequency Maximum (kHz) 1000
Topologies (Boost) No
Topologies (Buck-Boost) No
Topologies (Buck) Yes
Topology Buck

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Technical Documents


Recommended Soldering Techniques


Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2521 2021-05-27 2021-08-27 Qualified Additional Bill of Materials (BOM) - Automotive