FAN5018MTCX

Special Purpose Regulators Overview

The FAN5018MTCX is a high-current DC-DC switching controller manufactured by Fairchild Semiconductor, now part of onsemi. It is designed to implement low-voltage CPU core power supply circuits. The device operates with an input voltage of up to 12V and provides a single output adjustable from 0.5V to 3.5V. It supports a maximum switching frequency of 4000 kHz. The component is housed in a 28-TSSOP package with a width of 4.40mm and functions within an operating temperature range of 0°C to 85°C.

Special Purpose Regulators Feature Summary

• Designed for high-current applications requiring low-voltage CPU core power regulation
• Capable of supporting high switching frequencies for compact passive component sizing
• Integrated control logic for efficient DC-DC conversion management

Special Purpose Regulators Applications

• Low voltage CPU core power circuit implementation
• High current DC-DC converter systems
• Server and workstation power distribution networks

Special Purpose Regulators Procurement Notes

Verify the manufacturer designation carefully, as Fairchild Semiconductor has been acquired by onsemi. Ensure the ordering suffix matches the required tape and reel configuration. Confirm that the specific variant aligns with the intended thermal and electrical requirements for the target application environment.

Special Purpose Regulators Selection Notes

Select this component when designing power stages for processors requiring precise low-voltage regulation. Consider the thermal performance of the TSSOP package relative to the expected load current. Evaluate the compatibility of the switching frequency with available inductor and capacitor values to ensure stable loop operation.

Special Purpose Regulators Part Context

This part belongs to the family of specialized switching controllers aimed at processor power delivery. It represents a transition period where Fairchild branding was still present before full integration into onsemi product lines. The device addresses the need for efficient, high-density power solutions in computing hardware.

Special Purpose Regulators Replacement Considerations

Public confirmed substitute part numbers include FAN5018BMTCX. Verify pinout and parameter equivalence before substitution.