By Benjamin Pimentel

The tech sector dipped Tuesday as the broader market retreated on news that the U.S. consumer confidence index fell in September.

The Conference Board report cut short a modest tech rally, powered by gains in shares of Broadcom Corp., which jumped after Barclays Capital upgraded the chip maker's rating to overweight.

After gaining earlier in the session, Broadcom (BRCM) fell 0.4% to close at $29.73. Analyst Tim Luke had raised the company's rating from equal weight, saying the company "may be poised to regain momentum."

The economic report took its toll on the sector. The Nasdaq Composite Index (RIXF) was down 0.3% at 2,124. The Philadelphia Semiconductor Index (SOX) was off 1.4%, while the Morgan Stanley High Tech 35 Index (MSH) was down 0.75%.

Among the gainers were Palm Inc. (PALM), shares of which rose 2.8%, and Research In Motion (RIMM), which was up 1.8%.

But other major tech players were in the red, including Apple Inc. (AAPL), Dell Inc. (DELL), Amazon.com (AMZN) and SanDisk Corp. (SNDK).