The document describes a high-efficiency step-down DC/DC converter that can operate from a very low input voltage of 2.2V. The converter utilizes the LT3740 synchronous controller, which can convert input supplies ranging from 2.2V to 22V to outputs as low as 0.8V with load currents from 2A to 20A. It is suitable for applications such as distributed power systems, point-of-load regulation, and conversion of logic supplies.
This document is a design note (DN443) by Wei Gu regarding the Linear Technology Corporation LT3740 step-down synchronous controller. It highlights the device's ability to operate with input voltages as low as 2.2V, making it suitable for telecommunications and computing applications requiring high efficiency at very low supply levels.
The controller can operate from inputs down to 2.2V.
The device converts input supplies ranging up to 22V.
It produces outputs as low as 0.8V.
The controller operates at a fixed 300kHz frequency.