FEATURES
n Wide VIN Range: 4.5V to 38V n VOUT Range: 0.6V to 5.5V n Output Accuracy: ±0.25% at 25°C and ±0.67% over Temperature n Differential Output Sensing Allowing Up to 500mV Line Loss n Fast Load Transient Response n tON(MIN) = 20ns, tOFF(MIN) = 90ns n Controlled On-Time Valley Current Mode Architecture n Frequency Programmable from 200kHz to 2MHz and Synchronizable to External Clock n RSENSE or Inductor DCR Current Sensing n Overvoltage Protection and Current Limit Foldback n Power Good Output Voltage Monitor n Output Tracking or Adjustable Soft-Start n External VCC Input for Bypassing Internal LDO n 20-Pin QFN (3mm × 4mm) and TSSOP Packages APPLICATIONS
n Distributed Power Systems n Point-of-Load Converters n Computing Systems n Datacomm Systems LTC3833 Fast Accurate Step-Down DC/DC Controller with Differential Output Sensing DESCRIPTION
It drives all N-channel power MOSFETs. The controlled on-time valley current mode architecture allows for both fast transient response and constant frequency switching in steady-state operation, independent of VIN, VOUT and load current.
Linear Technology
