LTC3649IFE#PBF Description

The LTC3649IFE#PBF is a high-efficiency 60V, 4A synchronous monolithic step-down regulator. The regulator features a single resistor programmable 

output voltage, internal compensation, and high efficiencies over a wide VOUT range. The step-down regulator operates from an input voltage 

range of 3.1V to 60V and provides an adjustable rail-to-rail output range from (VIN – 0.5V) to ground while delivering up to 4A of output current. 

The switching frequency is also adjusted with an external resistor.

LTC3649IFE#PBF Features

Wide VIN Range: 3.1V to 60V

Wide VOUT Range: 0V to (VIN – 0.5V)

Single Resistor VOUT Programming

Integrated 110mΩ Top N-Channel/50mΩ Bottom N-Channel MOSFETs

95% Efficiency with 12VIN and 5VOUT

Regulated IQ: 440µA, Shutdown IQ: 18µA

Accurate Current Monitoring (±4%) without Sense Resistor

LTC3649IFE#PBF Applications

Industrial Applications

Automotive Applications