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Diodes Incorporated announced that it has further expanded its Zetex ZXLD LED driver series with the introduction of three new miniature LED drivers offering improved accuracy and thermal performance. Provided in TSOT23-5 and thermally-enhanced DFN6 packages, the highly integrated ZXLD1352, ZXLD1356 and ZXLD1366 deliver adjustable output currents of 350mA, 550mA and 1A, respectively, and are designed for a broad range of automotive, architectural and industrial lighting applications.

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Atmel Corporation announced the AT42QT1060, a touch control chip that integrates 6 channels of touch sensing with the ability to drive up to 7 low current LEDs directly through a pulse width modulated (PWM) output function. The device operates from 5.5VDC down to 1.8VDC and consumes less than 1uA in standby mode to give long battery life; it comes in a tiny 4mm x 4mm MLF28 package, making it ideal for use in mobile phones and other handheld devices. The AT42QT1060 is the latest addition to Atmel's comprehensive range of capacitive touch controllers based on Quantum Research Group's charge-transfer technology.

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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.

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Maxim Integrated Products introduces the MAX16822A/B and MAX16832A/C* family of 2MHz, high-brightness (HB) LED drivers with an integrated MOSFET and high-side current-sense circuitry. These highly integrated devices reduce the size, complexity, and cost of solid-state lighting (SSL) designs, simplifying the implementation of green lighting technology. Moreover, they provide the high conversion efficiency and advanced thermal-management capabilities critical to LED system designs.

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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.

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By providing 24 constant-current outputs capable of driving RGB LEDs at up to 80mA, the STP24DP05 from a world leader in analog, STMicroelectronics, performs the work of three conventional 8-output drivers within a compact TQFP48, 7 x 7mm footprint. Using this device to drive video displays and signage comprising large numbers of high-brightness LEDs saves bill-of-materials costs compared to conventional devices with fewer outputs.

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Atmel Corporation announced the AT42QT2160 - a touch controller IC combining touch key and touch slider functions in a single device. The AT42QT2160 can control up to 16 individual touch keys with a slider comprising between 2 and 8 of the touch key channels. In addition, the chip can also control up to 11 LEDs through a PWM output function that is controlled by the host, eliminating the need for an external LED controller.

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Vishay Intertechnology Inc. announced the release of a new series of power surface-mount LEDs that deliver a significant advance in heat dissipation and brightness. The new VLMx32.. devices feature a PLCC 4 package with a lead frame optimized to provide very low thermal resistance down to 290 K/W and power dissipation up to 200 mW, which in turn enables high drive currents up to 70 mA for twice the brightness of Vishay's high-intensity SMD LEDs in the PLCC 2 package. For automotive applications, the VLMx32.. devices are automotive qualified per AEC-Q101.

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Linear Technology announces the LT3592, a 36V step-down DC/DC converter designed to operate as a constant current LED driver. Its internal 36V, 900mA switch enables it to drive up to six 500mA white LED in a single string from a 36V input for industrial and LED signage applications. It can also drive two 500mA LEDs from a 12V lead acid battery input for automotive applications. Series connection of the LEDs provides identical LED currents, resulting in uniform brightness and eliminating the need for ballast resistors. The LT3592%u2019s switching frequency can be adjusted from 400kHz to 2.2MHz via a single resistor.

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Texas Instruments Incorporated introduced an innovative, six-channel, 40-V white light emitting diode (LED) driver with a built-in, high-efficiency boost regulator and 1.5-A FET. The smallest LED driver to manage up to 60 white LEDs at once, the TPS61181 provides high power efficiency and accurate current regulation for medium-sized displays used in notebooks, portable GPS, industrial and medical applications.

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