Diodes Incorporated

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Automotive Compliant 60V LED Linear Controller

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The AL5816Q is a 5-terminal adjustable constant current LED linear controllers offering excellent temperature stability and current capability. They can work with a wide input voltage range from 4.5V to 60V. With its low 200mV current sense FB voltage, it controls the regulation of LED current with minimum power dissipation compared with traditional linear LED drivers. This makes it ideal for medium to high current LEDs.

The device has an internal output drive up to 15mA, which enables it to drive external Bipolar transistors or MOSFETs. It also provides the capability to drive longer LED chains with low drop out voltage and multiple LED channels.

The AL5816Q has LED current adjusted and controlled by a sense resistor connected across FB pin and GND. The voltage across this resistor is controlled to a precise 0.2V thus controlling the current.

The AL5816Q can be dimmed by PWM signal through PWM pin, it can run at frequencies higher than 200Hz.

The AL5816Q is available in SOT25 package, and is Automotive-Compliant, qualified to AEC-Q100 Grade 1, supporting PPAP documentation.


  • Qualified to AEC-Q100 Grade 1
  • Wide Input Voltage Range from 4.5V to 60V
  • Low Reference Voltage (VFB = 0.2V)
  • 5% Reference Voltage Tolerance
  • Up to 15mA Driver Capability for Bipolar Transistor
  • PWM Dimming Capable
  • Input Under Voltage Lock-out
  • Over Temperature Shutdown
  • Totally Lead-Free & Fully RoHS Compliant 
  • Halogen and Antimony Free. “Green” Device 
  • PPAP Capable


  • Automotive Rear Lamps
  • Automotive Interior Lamps
  • Automotive Instrumentation Illumination
  • Automotive Position Lamps
  • Automotive License Plate Illumination

Product Specifications

Product Parameters

AEC Qualified Yes
Compliance (Only Automotive supports PPAP) Automotive
Topology Linear Controller
Minimum Supply Voltage (V) 4.5 V
Maximum Supply Voltage (V) 60 V
Maximum VOUT (V) 60 V
Number of Channels 1
LED Current Sense Voltage (mV) 200 mV
Output Current (A) 10 mA
Channel Max. Output Current (mA) EXT BJT mA
Accuracy (%) 4 %
Dimming Analog and PWM
Temperature Range (°C) -40 to 125 °C

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Technical Documents

Evaluation Boards and User Guides

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-2574 2022-04-05 2022-07-05 Qualified Additional Bill of Material (BOM) - Lead Frame Raw Material (C19400 FH)