Accurate Current Limit–Fast & Robust Short Circuit Protection

Many high input voltage applications demand step-down DC/DC converters that are both versatile and rugged. Our expanding family of 60V input capable, current mode, low IQ buck controllers are easy to use and have protection features including accurate current limiting and robust short circuit protection. For 48V backplane conversion, automotive systems or industrial control systems, see the table below for the controller that best matches your application requirements.
High Voltage, Low IQ DC/DC Regulators
Part No. IOUT (A) VIN (V) VOUT IQ (µA) Sync. Frequency (kHz) Operating Frequency (kHz) Comments
Switchmode Controllers  
LT3844 10 4 to 60 1.23V to 36V 120 100 to 600 100 to 500 Adjustable Frequency
LT3724 80 - 200 Fixed 200kHz Operation
LTC3824 0.8V to VIN 40 200 to 600 200 to 600 100% Duty Cycle, Low Dropout
LT3800 20 4 to 60 1.23V to 36V 80 - 200 Synchronous Drivers
LT3845 120 100 to 600 100 to 500
Switchmode Monolithics  
LT3437 0.4 3.3 to 80 1.25 to 0.9 xVIN 100 240 to 700 200 Ultrawide VIN
LT1976 1.3 3.3 to 60 1.2 to 0.9 xVIN 100 230 to 700
LT3434 2.5 3.3 to 60 1.25 to 0.9 xVIN 100 230 to 700