FAN5240MTC

Special Purpose Regulators Overview

The FAN5240MTCX is a two-phase, single-output synchronous buck controller designed to supply power for mobile AMD Athlon processors. It features an integrated five-digit DAC for output voltage adjustment between 0.925V and 2.0V with programmable slew rates. The device utilizes proprietary architecture with integrated compensation for precise core voltage regulation. It supports fixed-frequency PWM and hysteretic modes, includes overvoltage protection, and generates a PGOOD signal upon soft-start completion.

Special Purpose Regulators Feature Summary

• Integrated five-digit DAC enables precise digital control of the output voltage within the specified range.
• Proprietary architecture provides integrated compensation for superior static and dynamic core voltage regulation.
• Dual-mode operation allows switching between fixed-frequency PWM and hysteretic modes based on load conditions.

Special Purpose Regulators Applications

• Powering mobile AMD Athlon processor cores
• Single-output synchronous buck converter designs
• Laptop power management systems

Special Purpose Regulators Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm RoHS compliance status via current datasheets. Note that this specific part number may be discontinued; check for valid replacement alternatives if active procurement is required.

Special Purpose Regulators Selection Notes

Select this controller for applications requiring precise voltage regulation for mobile AMD processors. Ensure external components match the required current ratings and inductance values. Verify compatibility with the target processor's VID requirements and slew rate specifications before integration.

Special Purpose Regulators Part Context

This component belongs to the Fairchild Semiconductor FAN5240 series, which are specialized power management ICs. These controllers are engineered specifically for low-voltage, high-current applications typical of modern mobile computing platforms.

Special Purpose Regulators Replacement Considerations

Check for updated part numbers from onsemi, as Fairchild Semiconductor has been acquired. Verify pinout and electrical parameter compatibility with any proposed substitute devices.

Special Purpose Regulators FAQ

How is the output voltage regulated?

The output voltage is regulated using an integrated five-digit DAC, allowing adjustment between 0.925V and 2.0V with programmable slew rates.

What protection features are included?

The device includes built-in overvoltage protection (OVP) to prevent output overshoot and monitors load current through the lower MOSFET for overcurrent protection.