Search results for "leds"
White LED Driver from Linear Technology Powers up to 10 LEDs
Linear Technology has announced the LT3593, a high efficiency constant current white LED driver packaged in a 2mm x 2mm DFN (or ThinSOT) package. It features a unique high-side LED current sense topology that enables the LED cathode to be connected directly to ground, creating a single wire current source. Also a single digital control pin enables set-and-forget LED dimming with ratios as high as 32:1. The LT3593 is designed to drive up to 10 whi...
Drive up to Eight Channels of Ten 100mA LEDs
Linear Technology announces the LT3760, an 8-channel LED driver, utilizing a step-up DC/DC controller capable of driving up to a 45V string of 100mA LEDs per channel. Its internal 60V, 1MHz DC/DC boost mode controller is designed to operate as a constant current LED driver for up to 80 white LEDs. From a 12V input, the LT3760 can drive 8 channels, each with up to ten 100mA white LEDs in series while delivering efficiencies exceeding 92%. Its mult...
45V, 1.5A LED Driver for Boost, Buck or Buck-Boost High Current LED Applications
Linear Technology announces the H-grade version of the LT3517. The LT3517 is a high side current sense DC/DC converter designed to drive high current LEDs at constant current. Its 3V to 30V input voltage range with transient protection to 40V makes it ideal for a range of applications, including automotive, industrial and architectural lighting. The H-grade version operates with a junction temperature up to 150ºC, compared to the E- and I-grade ...
Synchronous buck-boost DC/DC converter drives two banks of white LEDs
Linear Technology has announced the LTC3452, a synchronous buck-boost DC/DC converter optimized for driving two banks of white LEDs from a single Li-Ion battery. Up to five parallel LEDs can be driven at up to 25mA each for backlighting LCD panels, while two LEDS can be driven at up to 200mA each (or one LED at 400mA) for camera flash applications. The LTC3452's synchronous buck-boost topology delivers up to 90% efficiency over the entire usable ...
LED driver with PWM brightness control for large display applications
The new A6281 from Allegro MicroSystems Europe is a three-channel constant-current LED driver IC with an on-chip oscillator for simple programmable brightness control. The new device is ideally suited to driving clusters of red/green/blue (RGB) LEDs in applications where the cluster forms one pixel in a large display or a lighting fixture. It precisely controls LED brightness via 10-bit pulse-width modulation (PWM) on each channel, complemented...
LED driver IC offers high efficiency and fast switching
The A6210 from Allegro MicroSystems Europe is an LED driver IC based on a buck (stepdown) regulator circuit using constant ‘on’ time with valley current-mode control. This control scheme allows the use of very short switch ‘on’ times, making the new device ideal for applications requiring high switching frequencies combined with high input voltages and low output voltages.
GDS launches 4000-nit LCD displays for full outdoor applications
GDS - Global Display Solutions unveiled at ISE in Amsterdam its new high bright family of products: Sirius. The excitement and expectations around these brand new products that will be shown again at Digital Signage Expo, Las Vegas / 23-25 February (booth n. 2425), are very high as they can finally give to outdoor communication the WOW factor Digital Out-Of-Home market has been always looking for. The new high bright products are ideal for Digita...
National Semiconductor - LED Driver with Dynamic Headroom Control for Automotive LCD Backlight Applications
National Semiconductor today announced the LM3492 LED driver with dynamic headroom control that accurately and efficiently drives current to two independently dimmable strings of LEDs. The LM3492, a member of National’s PowerWise energy-efficient product family, maximizes system efficiency and reduces system complexity and cost in automotive LCD backlight applications.
National Semiconductor Introduces Industry’s First 2A, Single Inductor, RGB LED Driver for Portable Projectors
National Semiconductor introduced the industry’s first 2A red, green and blue (RGB) LED driver for portable projectors that drives three common anode RGB high-brightness LEDs sequentially with a single inductor. The highly-integrated LM3435 includes an I2C control interface for LED current control.
Energy-Efficient Analog Products from National Semiconductor Provide High Reliability, Robust Operation for Automotive Applications
National Semiconductor Corp. today announced a series of innovative, energy-efficient products that enable emerging automotive applications in LED lighting, powertrain, safety and infotainment systems.