LED Lighting

Diodes has introduced a 12-channel constant-current LED driver arranged as four channels of RGB. AL58221 has open-drain outputs that can sink up to 60mA and withstand 24V. Maximum red green and blue currents are set with three resistors, then the individual channels are digitally-modulated to set their brightness. To reduce flicker, adaptive pulse density modulation is used, with diodes claiming ...

Cree LED has up-graded its 1.6 x 2.05mm lens-less XE-G led family, claiming a 20% increase in efficiency for RGBW systems, and a 10% or higher efficiency gain for 13 of the 18 available colors. These devices are intended to be packed closely under colour-mixing optical systems. As such, the gap between emissive surface and package edge is kept small ...

Lumissil Microsystems has created a pair of LED drivers that include a 32MHz 8051 microcontroller. “These new controllers enable lighting engineers to create customised dynamic LED lighting animations tailored to their system requirements,” according to the company. “They feature integrated non-volatile memory to store animation sequences and LED parameters, essential for dynamic lighting effects such as colour transitions, pulsing, fading ...

Cree LED is aiming at portable lighting with a 16,500 lumen multi-die LED in a 10 x 10mm package with a 9mm primary lens (right). Called XFL10K, it has two cousins: the 14,247 lm XFL08K which comes in the same package, but with an 8.5mm lens, and the 7 x 7mm 8,335 lm XFL05K with a 6mm lens. These are ...

Cinch Connectivity Solutions has announced a 100Gbit/s optical transceiver, intended for tough environments including aerospace, industrial and military. H28-100G-SR4 has four transmit and four receive channels, each rated at 25.78Gbit/s. For ease of installation and replacement, the package has a square array of flat pads underneath and it mounts to a similar array on the associated PCB via a guide ...

Melexis has extended its LIN RGB automotive LED driver offering with the MLX81123 offering cost-effective performance and reliability in a small package. Ambient LED lighting is now a key design feature for automotive manufacturers, enhancing the end-user’s experience and helping OEMs to provide striking visual distinction. With well known OEMs utilising ambient lighting extensively across their latest models, maintaining a ...

Novosense Microelectronics announced a 24 channel automotive LED driver at PCIM in Nuremberg today. NSL21924 is a high-side driver, aimed at rear lights, exterior lights and general automotive interior and body lighting. 16 channel NSL21916 is also available. Qualification is to AEC-Q100 Grade 1 (Tj = -40 to +150°C). The LED supply voltage can be across 3 to 16V, and ...

Silanna UV will launch a 235nm LED at ICFUST 2024, the International Congress on Far-UVC Science and Technology. SF1-3M1FWL1 is a 700mW input (30mA, 23.5V nominal) device that typically emits 3mW of UV radiation at that current. typical emission angle is 125°. Packaging is 6.8 x 6.8 x 1.38mm surface-mount. “This LED is effective for surface disinfection, air purification, medical ...

Toshiba is aiming at industrial programmable logic controllers with fast surface-mount photocouplers that have hysteresis in the signal path. They are amplified types with threshold detection and an open-drain output. Operation is across -40 to +125°C and the secondary side will run from between 2.7 and 5.5V, consuming ~1mA. Operation is specified at 3.3 and 5V. Input-referred hysteresis is typically ...

Marktech had revealed the latest in its line of sensors which combine many LEDs of different wavelengths with a photodiode. MTMD142345PDT38 has five LEDs at 1.04, 1.2, 1.3, 1.46 and 1.55μm, plus an InGaAs photodiode sensitive across 600 – 1,750nm, all individually addressable and hermetically sealed into a TO-5 metal can. This short-wave infra-red (SWIR) combinations is “ideal for infrared ...