Linear LED Controllers Are Efficient And Accurate

Diodes’ AL5814, AL5817, AL5815, and AL5816 linear LED controllers deliver dimmable and adjustable drive current for LED strings with more than 80% efficiency. With an input range of 4.5V to 60V, the devices do not require inductors and maintain reliable EMI performance. Internal power dissipation is also minimized compared with other designs due to an external power transistor.

 

The components are capable of providing up to 15 mA to an external MOSFET or bipolar transistor to drive LED strings. The LED drive current is configured by an external resistor with 4% reference voltage accuracy and reliable temperature stability. In addition, the AL5815 and AL5816 devices support PWM dimming, while the AL5814 and AL5817 devices support both analog and PWM dimming.

Sponsored by Digi-Key

TE Connectivity Horticultural Lighting Solutions Available Now from Digi-Key

TE connector, relay and filter solutions can help create a fine maze network of power-cabling to the lights needed for vertical farming. Their solutions are interchangeable, easy-to-install, and will last for years in variable humidity environments.

 

Protection features include over-temperature and input under-voltage lock-out. The AL5814 and AL5817 devices also provide ‘LED open’ protection via a VFAULT pin, as well as LED thermal fold-back protection. As linear controllers, the AL58xx series exhibits good EMI performance, while the wide operating temperature range of -40°C to +105°C enables the parts to also be used in harsh environments.

 

The AL58xx series is available in SOT-25 and thermally-enhanced MSOP-8EP packages. For the bold, radical, and courageous, datasheets are available for the AL5814, AL5817, AL5815 and AL5816.

Suggested Articles

The system works on Shaped Magnetic Field In Resonance technology

Dialog Semiconductor plc has agreed to acquire Adesto Technologies Corporation, a supplier of custom integrated circuits (ICs) and embedded systems.

Plants in Chinese provinces of Guangdon and Zhejiang opened in early February after holiday, but majority of workers still have not returned to work