Low voltage high current power supply circuit using LT3070

This low voltage high current power supply circuit is designed using LT3070 ic from Linear Technology which is a low voltage UltraFast transient response linear regulator.
This low voltage high current power supply based on LT3070 supplies up to 5A of output current with a typical dropout voltage of 85mV. A 0.01μF reference bypass capacitor decreases output voltage noise to 25μVRMS.

The IC incorporates a unique tracking function to control a buck regulator powering the LT3070’s input. This tracking function drives the buck regulator to maintain the IC’s input voltage to VOUT + 300mV, minimizing power dissipation.
Main features of this regulator IC are : Output Current: 5A , Dropout Voltage: 85mV , Digitally Programmable VOUT : 0.8V to 1.8V , Digital Output Margining: ±1%, ±3% or ±5% , Low Output Noise: 25μVRMS (10Hz to 100kHz) , Parallelable: Use Two for a 10A Output , Precision Current Limit: ±10% , Stable with Low ESR Ceramic Output Capacitors , High Frequency PSRR: 35dB at 1MHz , Current Limit Foldback Protection, Thermal Shutdown .