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Amplifiers/Converters??

Micrel LDO touts best PSRR, noise specs

Posted: 27 Jul 2004 ?? ?Print Version ?Bookmark and Share

Keywords:micrel semiconductor? mic2215? low-dropout regulator? ldo regulator?

Micrel says its MIC2215, for cellular phones, PDAs, PCs and peripherals such as WLAN cards, is one of the industry''s highest performing triple low-dropout (LDO) regulators. The device is available in triple 3V, 3-/2.8-/2.8V, and adjustable output versions, accurate to 2 percent over temperature.

"The IC's low dropout, high PSRR (power supply ripple rejection) and low ground current, coupled with low noise and fast turn-on time (30?s), make it an ideal solution for today's most demanding portable applications," said Steve Knoth, LDO product manager. Each LDO, working from a 2.25V to 5.5V input and providing up to 250mA, offers a dropout of 100mV typical at 150mA. The chip's PSRR is more than 70dB at 1kHz and ground current is <110?A per output at light load. The chip is a ?Cap design, which ensures a stable output with small ceramic output capacitors.

The MIC2215 is offered in a 4-by-4mm 16-pin MLF package. This package is approximately the same footprint as an MSOP-8/10 lead package, but with a thermal resistance of 45C/W (junction to ambient) as compared to the MSOP's 200C/W rating, according to the company.

The MIC2215 is currently sampling with volume quantities available within 10 to 12 weeks. The chip is priced starting at $1.50 in 1,000-unit quantities.

- eeProductCenter





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