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Microsemi boost converter comes in thin 5-pin package

Posted: 26 Jul 2004 ?? ?Print Version ?Bookmark and Share

Keywords:microsemi? led driver? led? lx1995? lx1971?

Microsemi Corp., a manufacturer of analog/mixed signal IC, released a miniature LED driver for powering LEDs in handheld display applications such as wireless phones, pagers, digital cameras, GPS receivers and PDAs.

The new step-up boost converter, called LX1995, is available in one of the industry's thinnest 5-pin packages - the 1mm high Thin Shrink Small Outline TSOT. The company said that the device also utilizes one of the smallest-sized external inductor and filter capacitors to conserve additional board space.

"We designed the LX1995 with greater than 85 percent efficiency over a wide output power range, making it ideal for portable displays with day and night usage," said Paul Bibeau, VP and GM of Microsemi's Integrated Products Group. "Its low quiescent current and shutdown current specifications promote superior performance in the battery-operated systems we're targeting."

The LED driver is available in two options for switch current specifications: the LX1995-1 with a switch current of 325mA for applications of up to six LEDs, and the LX1995-2 with a switch current of 500mA for applications up to ten. The product is also designed to provide automatic brightness control of LED displays when teamed with the company's visible light sensors, such as the LX1971 and LX1972.

The LX1995 is also available in the 1.3mm high SOT-23 package. In 10,000-unit pricing, the TSOT version is priced at 58 cents, while the SOT-23 version is 50 cents. More information may be obtained from the company's website.





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