FAN6204AMX

Power Supply Controllers, Monitors Overview

The FAN6204AMX is a secondary-side synchronous rectifier controller from onsemi, designed to drive SR MOSFETs for improved power conversion efficiency. It supports Flyback and Forward topologies with a fixed switching frequency of 65 kHz. The device operates within a supply voltage range of 4.5 V to 28.5 V and delivers an output current capability of 50 mA. It features rise and fall times of 70 ns and 50 ns respectively, with a quiescent supply current of 7 mA. The component functions in non-isolated configurations and is rated for an operating temperature range from -40°C to +105°C.

Power Supply Controllers, Monitors Feature Summary

• Integrates mWSaver technology to enable internal green mode operation, significantly reducing no-load power consumption by halting SR switching during light load conditions.
• Supports PWM frequency tracking and secondary winding voltage detection, ensuring stable performance across both fixed and variable frequency systems.
• Includes overvoltage protection on the VDD pin to prevent device damage when voltage exceeds specified limits.

Power Supply Controllers, Monitors Applications

• Secondary side controllers for synchronous rectification
• Flyback converters operating in continuous or discontinuous conduction modes
• Forward converter auxiliary rectification

Power Supply Controllers, Monitors Procurement Notes

Verify that the specific part number suffix matches the required package and tape/reel specifications for your assembly line. Confirm RoHS compliance status and material declarations against current manufacturer documentation prior to procurement. Ensure the ordering quantity aligns with standard factory packaging quantities to avoid unnecessary cut-tape handling fees. Cross-reference the manufacturer date code and lot traceability requirements with your quality assurance standards before finalizing the purchase order.

Power Supply Controllers, Monitors Selection Notes

Select this component for applications requiring efficient secondary-side rectification in flyback or forward topologies. It is suitable for designs needing support for quasi-resonant, DCM, and CCM operations. Consider its wide input voltage range and low quiescent current for battery-powered or energy-sensitive systems. Evaluate thermal management needs given the extended operating temperature range and surface-mount packaging constraints.

Power Supply Controllers, Monitors Part Context

The FAN6204AMX belongs to the FAN6204 series of power management ICs manufactured by onsemi. It falls under the category of switching controllers specifically optimized for synchronous rectification. This series addresses the need for higher efficiency in isolated power supplies by replacing traditional diode rectifiers with actively controlled MOSFETs driven by dedicated controller logic.

Power Supply Controllers, Monitors Replacement Considerations

The FAN6204MY is a related variant within the same series, though it may differ in specific electrical characteristics or availability status. Verify functional compatibility and parameter alignment before substituting.