Linear Technology’s new LTC3810H-5 is a high input voltage synchronous step-down DC/DC controller with guaranteed specifications for junction temperatures as high as 150°C. This controller can directly step down voltages from 60V to an output voltage ranging from 0.8V to 93% of VIN. The 1 Ohm onboard gate drivers minimize switching losses associated with driving N-channel MOSFETs at high frequency and high voltage for output currents up to 25A.
The device employs a constant on-time valley current-mode control architecture, delivering low duty cycles and fast transient response with accurate cycle-by-cycle current limit without requiring a sense resistor.
Applications include 48V power conversion in telecom and datacom, as well as automotive and industrial systems susceptible to high surge voltages.
The LTC3810H-5 is offered in a 5mm x 5mm QFN-32 package, with 1,000 piece pricing starting at $3.76 each.