Features: Dual N-Channel MOSFET Synchronous Drive Synchronizable/Programmable Fixed Frequency Wide VIN Range: 3.5V to 36V Operation VOUT Range: 0.8V to 6V OPTI-LOOPTMCompensation Minimizes COUT ±1% Output Voltage Accuracy Internal Current Foldback Output Overvoltage Crowbar Protection Latched Sho...
LTC1735: Features: Dual N-Channel MOSFET Synchronous Drive Synchronizable/Programmable Fixed Frequency Wide VIN Range: 3.5V to 36V Operation VOUT Range: 0.8V to 6V OPTI-LOOPTMCompensation Minimizes COUT ±1%...
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The LTC®1735 is a synchronous step-down switchingregulator controller that drives external N-channel powerMOSFETs using a fixed frequency architecture. BurstModeTMoperation provides high efficiency at low loadcurrents. The precision 0.8V reference is compatible withfuture microprocessor generations. OPTI-LOOP compen-sation allows the transient response to be optimized overa wide range of output capacitance and ESR values.
The operating frequency of LTC1735 (synchronizable up to 500kHz) isset by an external capacitor allowing maximum flexibilityin optimizing efficiency. A forced continuous control pinreduces noise and RF interference and can assist second-ary winding regulation by disabling Burst Mode operationwhen the main output is lightly loaded.
Protection features include internal foldback current lim-iting, output overvoltage crowbar and optional short-circuit shutdown. Soft-start is provided by an externalcapacitor that can be used to properly sequence supplies.
The operating current level of LTC1735 is user-programmable via anexternal current sense resistor. Wide input supply rangeallows operation from 3.5V to 30V (36V maximum).