资 源 简 介
The LT1301 is a micropower step-up DC/DC converter thatuTIlizes Burst Mode™ operaTIon. The device can deliver 5Vor 12V from a two-cell battery input. It features programmable5V or 12V output via a logic-controlled input, noloadquiescent current of 120mA and a shutdown pin whichreduces supply current to 10mA. The on-chip power switchhas a low 170mV saturaTIon voltage at a switch current of1A, a four-fold reducTIon over prior designs. A 155kHzinternal oscillator allows the use of extremely small surfacemount inductors and capacitors. Operation is guaranteedat 1.8V input. This allows more energy to be extractedfrom the battery, increasing operating life. The ILIM pin canbe used for soft start or to program peak switch currentwith a single resistor allowing the use of even smallerinductors in lighter load applications. The LT1301 isavailable in an 8-lead SOIC package, minimizing boardspace requirements. For a selectable 3.3V/5V step-upconverter, please see the LT1300. For higher outputpower, see the LT1302.
