Electronic Design

Low-Dropout Voltage Regulators Can Handle 1-A Currents

The MIC39101 and MIC3910 are a pair of low-dropout (LDO) voltage regulators that can handle 1 A of current while converting 3.3 to 2.5 V for low-voltage microcontrollers, DSPs, and PLDs. Their thermally enhanced SO-8 package, compared to traditional 1-A LDOs in SOT-223 packaging, is 40% smaller. Still, they maintain the same power capabilities. Applications requiring currents greater than 1 A can utilize the MIC39150, MIC39300, and MIC39500, which are 1.5-, 3.0-, and 5.0-A regulators. These three devices have a 500-mV dropout under all conditions. According to its manufacturer, this family of ultra-low-dropout voltage regulators offers the simplest and smallest solutions for 3.0- to 2.5-V conversion. In 100-unit quantities, the MIC39101 and MIC39102 cost $1.69 each.

Micrel Semiconductor, 1849 Fortune Dr., San Jose, CA 95131; (408) 944-0800; fax (408) 944-0970; www.micrel.com.

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