LTC3412 2.5V 2.5A DC converter circuit
Using the LTC3412 monolithic synchronous, step-down DC/DC converter from Linear Technology you can design an simple low cost , high efficiency power supply circuit for portable applications like : battery-powered equipment , notebook computers , distributed power systems , cellular telephones and other devices .
The LTC3412 is a utilizing a constant frequency, current mode architecture which operates from an input voltage range of 2.625V to 5.5V .
LTC3412 voltage regulator provides an adjustable regulated output voltage from 0.8V to 5V while delivering up to 2.5A output current.
The power supply presented in this circuit will provide an fixed output voltage of 2.5 volts at a maximum current of 2.5A .
The value of the resistor sets the ramp current that is used to charge and discharge an internal timing capacitor within the oscillator and can be calculated by using the following equation:
ROSC=[ (3.23x10^11 )f(Hz)]-10kohms
The output voltage is set by an external resistive divider according to the following equation: Vout=0.8V(1+R2/R1)