Automotive-Compliant Linear LED Driver-Controller Offers Low Dropout and Enhanced Dimming


ByAbhiemanyu Pandit 0

Automotive-Compliant Linear LED Driver-Controller Offers Low Dropout and Enhanced Dimming

Diodes Incorporated released the AL5814Q an automotive-compliant linear LED driver-controller with low dropout voltage and open LED detection for automotive linear-driven LED lamps. The led driver is ideal for automotive applications where specific change control is required. The device is AEC-Q100 qualified, PPAP capable, manufactured in IATF16949:2016 certified facilities and has a grade 1 temperature rating.


The AL5814Q has up to 15mA drive and uses an external drive transistor, MOSFET or BJTs, minimizing its power dissipation. This feature of driving higher current LEDs or multiple LED strings makes it ideal for applications that require higher light output including license plate illumination, rear lamps, internal lamps and instrument panels.



  • Minimum Input Voltage: 4.5 V
  • Maximum Input Voltage: 60 V
  • Maximum VOUT    : 60 V
  • Number of Channels:    1
  • LED Current Sense Voltage:    400 mV
  • LED Current: EXT BJT/MOS mA
  • Accuracy: 5 %
  • Dimming: PWM
  • Temperature Range: -40 -to 125 °C
  • Package: MSOP-8EP

The AL5814Q’s output current feedback level can be adjusted by using the VSET pin for a lower dropout via resistor divider, analog dimming and thermal fold-back. The VFAULT pin comes with different functions such as PWM dimming by applying a PWM signal to the VFAULT pin and the Open-LED detection with its activation via the SFAULT pin. Over-temperature protection is also included, along with input under-voltage lockout.


The AL5814Q is available in the exposed MSOP-8EP package. Further information is available at Diodes.

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