DESCRIPTION
●The LT® 3433 is a 200kHz fixed-frequency current mode switching regulator that provides both step-up and step down regulation using a single inductor. The IC operates over a 4V to 60V input voltage range making it suitable for use in various wide input voltage range applications such as automotive electronics that must withstand both load dump and cold crank conditions.
●FEATURES
●Automatic Step-Up and Step-Down Conversion
●Uses a Single Inductor
●Wide 4V to 60V Input Voltage Range
●VOUTfrom 3.3V to 20V
●Dual Internal 500mA Switches
●100µA No-Load Quiescent Current
●Low Current Shutdown
●±1% Output Voltage Accuracy
●200kHz Operating Frequency
●Boosted Supply Pin to Saturate High Side Switch
●Frequency Foldback Protection
●Current Limit Foldback Protection
●Current Limit Unaffected by Duty Cycle
●16-lead Thermally Enhanced TSSOP Package
●APPLICATIONS
●12V Automotive Systems
●Wall Adapter Powered Systems
●Battery Power Voltage Buffering
