white led

Addressing the burgeoning market for energy-saving, environmentally friendly light-emitting diode (LED) technology, Freescale Semiconductor is now sampling the first LED backlight product in its power management IC portfolio. The new 10-channel MC34844 white LED driver IC is designed for LED backlights in notebook computers, as well as in flat-panel monitors with screen sizes ranging from 10 inches to 27 inches.

Link Preview

Vishay Intertechnology, Inc. released the industry.s first series of high-intensity white power SMD LEDs in the CLCC-2 flat ceramic package. The robust and light-efficient VLMW82.. devices offer low thermal resistance of 20 K/W and high optical power from 9000 mcd to 18000 mcd for thermal-sensitive applications. With an ultra-low profile of only 0.75 mm, the CLCC-2 flat ceramic package of the VLMW82.. LEDs allows the additional current drive for a maximum light output while maintaining a high service life of up to 50,000 hours, making them ideal light sources in space-limited applications where thermal management is a key consideration.

Link Preview

Solution also Adds More Tools to Support White Lighting,Bringing Code-Free Design to a Broader Range of Applications

Cypress Semiconductor Corp. announced significant enhancements for its award winning EZ-Color design solution for intelligent color and white LED lighting systems. The new ColorLock feature enables designers to use optical feedback to automatically ensure precise color points over time and temperature for applications such as LCD backlighting, architectural lighting and more. The EZ-Color solution also adds new tools to further support white lighting design. Both features dramatically cut design time by allowing users to complete designs without any C or Assembly coding required.

Link Preview

MILPITAS, CA April 28, 2008 Linear Technology announces 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.

Link Preview

SUNNYVALE, CA April 17, 2008 Maxim Integrated Products (Pink OTC Markets: MXIM) introduces the MAX8822, the industry's only white-LED (WLED) driver to combine a highly efficient negative charge pump with two independent, low-dropout (LDO) regulators. Available in a tiny, 3mm x 3mm x 0.8mm TQFN package, this single-chip solution for driving up to four WLEDs is 50% smaller than the standard two-chip solution. To achieve the industry's highest efficiency, the MAX8822 features a negative-charge-pump architecture that completely eliminates high-side in-line resistance, delaying 1x mode to 2x mode transition during battery discharge.

Link Preview

SUNNYVALE, CA March 10, 2008 Maxim Integrated Products (Pink Sheets: MXIM) introduces the MAX8821 the only white-LED (WLED) driver to combine a highly efficient, negative charge pump with a fully differential, bridged audio amplifier and two low-noise, low-dropout (LDO) current regulators. To maximize efficiency, this LED driver features a negative architecture that completely eliminates high-side, in-line switch resistance loss in 1x mode, delaying 1x to 1.5x mode transitions during battery discharge.

Link Preview

MILPITAS, CA March 20, 2008 Linear Technology announces the LTC3524, an integrated BIAS and white LED power converter solution for small to medium sized (3" to 7") thin film transistor (TFT) liquid crystal display (LCD) panels. The device operates from an input voltage range of 2.5V to 6V, enabling it to accommodate multicell alkaline/NiMH batteries as well as single cell Li-Ion. Each low noise output of the TFT converter is fully adjustable enabling it to power a wide array of LCD panels. The LTC3524 can generate up to 25mA at 6V for the AVDD channel, and up to 2mA at 20V and -20V for the respective VGH and VGL bias requirements with controlled power-up/power-down sequencing.

Link Preview

Devices Utilize InGan Technology to Offer Luminous Intensity Range of 1800 mcd to 7100 mcd, and Low Resistance of 40 K/W and 50 K/W

MALVERN, Pa. March 12, 2008 Vishay Intertechnology, Inc. (NYSE: VSH) today released two new series of warm white power SMD LEDs that utilize InGan technology to offer low resistance and high optical power. The VLMW611.. series is offered in the CLCC-6 package, while the VLMW621.. series features the CLCC-6 flat package, which offers an industry-low height profile of 0.9 mm.

Link Preview