December 23, 2024 
Professional magazine and portal dedicated to electronics 
Diodes Incorporated announced the availability of the AL5816Q, an automotive-compliant linear LED controller for Automotive LED lighting. With an operating voltage range of 4.5V to 60V, the AL5816Q supplies an output drive current of 15mA to control LED lights through an external BJT, delivering a constant current of a few mA up to 1.5A, or higher LED current if a MOSFET is used.
This ability to optimize the external transistor makes the AL5816Q well-suited for many automotive LED lighting applications, such as rear light clusters, interior illumination, instrument panels, and license plate lighting. The 5-pin SOT25 package requires very few external components and does not need a separate switching inductor. It features a high-voltage PWM input for LED light dimming.
The feedback pin operates at just 200mV, enabling the AL5816Q to control the LED drive current precisely while minimizing the drop-out voltage and reducing the LED system power dissipation, particularly when compared against traditional linear LED controllers (more info).
