FAN2356MPX

Overview

The FAN2356MPX is a synchronous buck regulator from onsemi, designed for high-efficiency point-of-load applications. It operates with an input voltage range of 4.5V to 24V and provides a single adjustable output ranging from 0.6V to 5.5V. The device supports up to 6A of continuous output current and features a programmable switching frequency between 200 kHz and 1.5 MHz. Key electrical specifications include a typical quiescent current of 24 µA and a fixed internal feedback reference of 0.6V. It is housed in a compact 34-pin PowerTFQFN package.

Feature Summary

• Synchronous step-down topology for enhanced efficiency
• Wide input voltage capability suitable for 12V and 24V systems
• Adjustable switching frequency allows optimization for size or performance
• Low quiescent current improves standby power consumption

Applications

• Point-of-load regulation for industrial equipment
• Power distribution networks in telecommunications infrastructure
• Voltage regulation for embedded computing systems
• High-density power supplies for consumer electronics

Procurement Notes

Verify the specific suffix 'MPX' against the official datasheet to confirm tape-and-reel packaging and temperature grade. Confirm RoHS compliance status as indicated in the latest documentation. Ensure the component source is authorized to avoid counterfeit risks, particularly given the PQFN package type which requires careful handling during assembly.

Selection Notes

Select this regulator when designing for 24V input systems requiring up to 6A at low voltages. The wide frequency range permits trade-offs between external component size and electromagnetic interference. Verify that the thermal requirements of the 34-pin PQFN package are met by the PCB layout for the intended load current.

Part Context

This component belongs to the FAN2356 family of synchronous buck regulators. It shares functional similarities with other onsemi PoL regulators but is distinct in its 24V input rating and 6A current capacity. The MPX suffix typically denotes specific packaging and reel configurations compared to other variants like AMPX.

Replacement Considerations

Direct pin-to-pin replacements should be verified against the official cross-reference list. Consider parts with similar input ranges and current ratings if exact matches are unavailable. Ensure thermal performance and control loop stability are compatible with the existing design.