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Using Microchip's micropower LDOs

Posted: 09 Apr 2008 ?? ?Print Version ?Bookmark and Share

Keywords:LDO? CMOS process? low-power application?

Microchip Technology Inc.'s family of micropower LDOs utilizes low-voltage CMOS process technology. These LDOs provide similar ripple rejection and dropout characteristics as their bipolar equivalents, but are significantly more efficient. A typical bipolar regulator has base current equal to 1-2 percent of the output load, whereas Microchip's LDOs have approximately 60?A resulting in total operating current orders of magnitude lower than their bipolar counterparts. In addition, Microchip's LDOs can be placed in a shutdown mode, further enhancing their effectiveness in low-power applications.

This low-power operation makes Microchip's family of LDOs ideal for upgrading the LP2980 and MIC5205 bipolar LDOs in cellphones, pagers, PDAs, laptops, handheld meters, and other portable applications.

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