The LT®3507 is a single IC with three step-down converters and a low dropout linear regulator driver. It is suitable for high current, low voltage power supplies in industrial and automotive applications. It is compact and simple compared to multi-chip solutions.
This document is a design note for the Linear Technology LT3507, a single IC current mode triple step-down regulator. It highlights the device's ability to generate one 2.4A output and two 1.5A outputs with internal power switches and an LDO driver.
The device regulates power sources with an input voltage ranging from 4V to 36V.
The switching frequency is set with a single resistor between 250kHz and 2.5MHz.