Infineon introduces single-chip voltage regulator

By siliconindia   |   Friday, 24 July 2009, 19:14 IST   |    3 Comments
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Bangalore: Infineon, a semiconductor and system solutions provider has launched a single-chip linear voltage regulator with integrated diagnosis and car radio system protection functions. Designed for active antenna applications in automotive infotainment systems, the TLF 4277 low drop out (LDO) voltage regulator has adjustable output voltage to support a majority of standard active antennas, including FM/AM, DAB (Digital Audio Broadcast), and the XM and SIRIUS satellite radio bands. With its integrated current monitor and adjustable current limitation, the TLF 4277 enables reduction in the number of discrete components for active antenna applications by approximately 50 percent. More than 95 percent of all cars now produced worldwide feature active antennas for radio program reception. Active antennas are small enough to easily fit into the windscreen, front bumper or the stub antenna on the car’s roof. Infineon claims to be the first chip supplier in the world to produce a monolithic single-chip voltage regulator with integrated current monitor function for diagnosis and system protection as well as adjustable current limitation. According to market researchers, about 52 to 55 million cars are expected to be produced globally in the year 2009. On an average, cars are typically equipped with two active antennas and as a result with two active antenna voltage regulators. Infineon tries to grab this opportunity in the market with its new product.

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