RE027 [Updated 2/03. 9 Pages] RE027 is a low drop out (LDO) voltage regulator macrocell with a fixed 2.8V output voltage. rated for loads up to 130 A Low Drop Out (LDO) voltage regulator macrocell with a fixed 2.8V output voltage, rated for loads of up to 130 mA. A typical application is radio section supply in mobile terminals.