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Low-noise regulator touts high PSRR, efficiency

Posted: 27 Aug 2007 ?? ?Print Version ?Bookmark and Share

Keywords:voltage regulator? digital IC power regulators? linear regulators?

Micrel Inc. has launched a new family of 'SuperLNRs' (low noise regulators) that feature the advantages and ease of use of LDOs with low noise, high PSRR, ultrafast transient performance, while providing the efficiency of a switching regulator.

Micrel's new SuperLNR family combines the "good" characteristics of both linear regulators and DC/DC converters to produce a new generation of easy-to-use low noise regulators.

MIC38300, the first device in this family, is a 3A voltage regulator housed in a tiny 4mm x 6mm MLF package that produces less than 5mV of output noise and 70dB of PSRR. Industry leading, ultrafast dynamic performance also allows the MIC38300 to maintain less than 30mV of output voltage deviation even during fast load transients.

The IC is targeted at applications that need an easy upgrade from LDOs as power dissipation becomes an issue or where low-noise performance, small size and fast transient performance are vital. Target markets include point-of-load and digital IC power regulators for networking, servers, wireless base stations, industrial and RF applications.

MIC38300 features an input voltage range of 3V to 5.5V and adjustable output voltages as low as 1V. The solution requires no external inductor and fits into a total solution footprint of less than 40mm?. It has a junction operating range from -40C to 125C.

The chip is available in sample quantities with pricing starting at $3.95 for 1,000 quantities.

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