资 源 简 介
The LTC3642 is a high effi ciency step-down DC/DCconverter with internal high side and synchronous powerswitches that draws only 12μA typical DC supply currentat no load while maintaining output voltage regulaTIon.The LTC3642 can supply up to 50mA load current andfeatures a programmable peak current limit that providesa simple method for opTImizing effi ciency in lower currentapplicaTIons. The LTC3642’s combinaTIon of Burst Mode®operation, integrated power switches, low quiescent current,and programmable peak current limit provides higheffi ciency over a broad range of load currents.With its wide 4.5V to 45V input range and internalovervoltage monitor capable of protecting the part through60V surges, the LTC3642 is a robust converter suited forregulating a wide variety of power sources. Additionally,the LTC3642 includes a precise run threshold and soft-startfeature to guarantee that the power system start-up iswell-controlled in any environment.
