Linear Technology’s LT3791 is a synchronous buck-boost DC/DC LED driver and voltage controller which can deliver over 100 W of LED power. Its 4,7 V to 60 V input voltage range makes it ideal for a wide variety of applications, including automotive, industrial and architectural lighting.
Similarly, its output voltage can be set from 0 V to 60 V, enabling it to drive a wide range of LEDs in a single string.
The internal four-switch buck-boost controller operates from input voltages above, below or equal to the output voltage, ideal for applications such as automotive, where the input voltage can vary dramatically during stop/start, cold crank and load dump scenarios.
Transitions between buck, pass-through and boost operating modes are seamless, offering a well-regulated output even with wide variations of supply voltage. The LT3791’s design utilises three control loops to monitor input current, LED current and output voltage to deliver optimal performance and reliability.
The IC uses four external switching MOSFETs and delivers from 5 W to over 100 W of continuous LED power with efficiencies up to 98,5%. LED current accuracy of ±6% ensures constant lighting while ±2% output voltage accuracy enables the converter to operate as a constant voltage source.
The LT3791 utilises either analog or PWM dimming as required by the application. Furthermore, its switching frequency can be programmed between 200 kHz and 700 kHz or synchronised to an external clock. Additional features include output disconnect, input and output current monitors, open and shorted LED detection and integrated fault protection.
Ultra-low power MEMS accelerometer Altron Arrow
Analogue, Mixed Signal, LSI
Analog Devices’ ADXL366 is an ultra-low power, 3-axis MEMS accelerometer that consumes only 0,96 µA at a 100 Hz output data rate and 191 nA when in motion-triggered wake-up mode.
Read more...Converting high voltages without a transformer Altron Arrow
Editor's Choice Power Electronics / Power Management
With appropriate power converter ICs, such as the LTC7897 from Analog Devices, many applications can be suitably powered without having to use complex and cost-intensive transformers.
Read more...Versatile range of camera modules EBV Electrolink
Opto-Electronics
The CAM-66GY pro-modules from ST are a full range of sample camera modules made for a seamless evaluation and integration of the VD66GY 1,5-megapixel colour image sensor.
Read more...Precision MEMS IMU modules Altron Arrow
Analogue, Mixed Signal, LSI
The ADIS16575/ADIS16576/ADIS16577 from Analog Devices are precision, MEMS IMUs that includes a triaxial gyroscope and a triaxial accelerometer.
Read more...Altron Arrow introduces GX10 supercomputer Altron Arrow
AI & ML
Powered by the NVIDIA GB10 Grace Blackwell superchip, this is desktop-scale AI performance previously only available to enterprise data centres.
Read more...MEMS with embedded AI processing Altron Arrow
Analogue, Mixed Signal, LSI
STMicroelectronics has announced an inertial measurement unit that combines sensors tuned for activity tracking and high-g impact measurement into a single, space-saving package.
Read more...Multicore CPUs with on-chip accelerators Altron Arrow
DSP, Micros & Memory
NXP’s MCX N94x and N54x MCUs offer advanced features for consumer and industrial applications, including connectivity, security, and power management.
Read more...RF agile transceiver Altron Arrow
Telecoms, Datacoms, Wireless, IoT
The AD9361 is a high performance, highly integrated RF Agile Transceiver designed for use in 3G and 4G base station applications.
Read more...SmartRAID 4300 Series Altron Arrow
DSP, Micros & Memory
Microchip’s disaggregated architecture leverages host CPU and PCIe infrastructure to overcome traditional storage bottlenecks in scalable, secure NVMe RAID storage solutions.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version