LT1300

The LT1300 is a micropower step-up DC/DC converter thatutilizes Burst Mode™ operation. The device can deliver 5Vor 3.3V from a two-cell battery input. It features program-mable 5V or 3.3V output via a logic-controlled input, no-load quiescent current of 120µA and a shutdown pin whichreduces supply current to 10µA. The on-chip power switchhas a low 170mV saturation voltage at a switch current of1A, a four-fold reduction over prior designs. A 155kHzinternaloscillator allows the use of extremely small sur-face mount inductors and capacitors. Operation is guaran-teed at 1.8V input. This allows more energy to be extractedfrom the battery increasing operating life. The ILIM pin canbe used to program peak switch current with a singleresistor allowing the use of less expensive and smallerinductors and capacitors in lighter load applications. TheLT1300 is available in an 8-lead SOIC package, minimizingboard space requirements. For a 5V/12V Selectable Out-put Converter see the LT1301. For increased output cur-rent see the LT1302.