LTC3738 3738f is a 3-phase step-down switch- ing regulator controller from Linear Technology Corporation. It is mainly used in high-performance notebook computers, servers, desktop computers and workstations. The controller supports 3-phase synchronous step-down switching power supply, and can drive all N-channel external power MOSFET stages. The working frequency is 210kHz to 530kHz.
The LTC3738 is a 3‑phase synchronous step‑down switching regulator controller designed to drive N‑channel external MOSFETs in a fixed‑frequency architecture. It offers features such as programmable Active Voltage Positioning (AVP), differential output sensing, soft‑start, and configurable thermal detection.
The document details absolute maximum ratings, package information, electrical characteristics, typical performance curves, functional descriptions, and example application circuits, enabling designers to integrate the controller into high‑performance notebook, server, and workstation power supplies.