The LTC3775 is a current mode step-down converter with a 30ns minimum on-time controller in a 3mm × 3mm QFN package that provides a continuous 15A from an 5V–26V input. It is well suited for automotive and industrial applications.
The document introduces the LTC3775 as a voltage mode DC/DC regulator designed to produce high DC/DC step-down ratios in small packages. It features a very low minimum on-time of 30ns, allowing operation at wide input-to-output voltage ranges without sacrificing performance or efficiency.
Key design features include cycle-by-cycle programmable current limit for excellent short circuit protection and fast transient response. The controller utilizes a leading-edge voltage mode architecture with internal line feed-forward compensation to maintain constant gain regardless of input voltage variations.
The LTC3775 has a very low minimum on-time of 30ns.
The application provides continuous output from an input ranging up to 26V.