FAN1084MCX

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The FAN1084MCX is a low dropout three-terminal linear regulator manufactured by Fairchild Semiconductor. It provides an output current capability of 4.5A and is optimized for low voltage applications, including VTT bus termination where transient response and minimum input voltage are critical. The device features on-chip thermal limiting to protect against excessive junction temperatures caused by overload or ambient conditions. It is available in the industry-standard TO-263 center cut package.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Low dropout voltage performance at high output currents up to 4.5A
• Fast transient response suitable for sensitive logic supplies
• On-chip thermal limiting protection against overload and high temperature

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Desktop PCs and embedded processors supply
• GTL and SSTL logic reference bus supply
• Low voltage VCC logic supply
• Post regulator for switching supplies

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific manufacturer source, as Fairchild Semiconductor's semiconductor division has undergone corporate restructuring. Confirm that the component is sourced from authorized distributors to ensure authenticity and traceability. Check for RoHS compliance status and lead-free markings consistent with the datasheet specifications. Ensure the TO-263 center cut package matches the required PCB footprint.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this regulator for applications requiring high current delivery with minimal voltage drop from a 5V or lower input supply. It is particularly suited for VTT termination and microprocessor power rails. Consider the thermal management requirements due to the 4.5A output capability. Compare against fixed voltage variants if a specific output voltage like 1.5V or 3.3V is needed instead of the adjustable version.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

The FAN1084 series includes the FAN1084 (adjustable), FAN1084-1.5 (fixed 1.5V), and FAN1084-3.3 (fixed 3.3V). These devices share the same core architecture and package options, including TO-220, TO-263 center cut, and TO-252. The series is designed for low voltage microprocessor applications requiring regulated output from 1.5V to 3.6V.