FAN5617MPX

Overview

The FAN5617MPX is a high-efficiency, synchronous step-down DC/DC converter manufactured by onsemi. It integrates two N-channel power MOSFETs and operates from an input voltage range of 2.7V to 5.5V. The device provides a fixed output voltage of 1.05V with a maximum load current capability of 3A. It utilizes adaptive on-time control for fast transient response and includes comprehensive protection features such as over-current protection, thermal shutdown, and undervoltage lockout. The component is housed in a compact WLCSP-25 package suitable for space-constrained portable applications.

Feature Summary

• Integrates dual N-channel power MOSFETs for high efficiency
• Adaptive on-time control ensures rapid transient response
• Includes over-current, thermal, and undervoltage protection

Applications

• Portable consumer electronics
• Mobile communication devices
• Embedded systems requiring efficient power regulation

Procurement Notes

Verify the specific ordering suffix and package variant against the manufacturer's latest datasheet to ensure compatibility with design requirements. Confirm that the component meets all necessary regulatory standards for the intended application environment. Cross-reference part numbers with official distributors to avoid counterfeit products and ensure supply chain integrity.

Selection Notes

Select this component when a compact solution is required for low-voltage, high-current applications. The integrated MOSFET design reduces external component count and board space. Ensure the input voltage range aligns with the system's power source and that the fixed 1.05V output matches the load requirements without additional adjustment circuitry.

Part Context

This part belongs to onsemi's portfolio of power management integrated circuits designed for mobile and portable devices. It addresses the need for efficient power conversion in battery-operated systems where size and performance are critical constraints. The series focuses on delivering stable power with minimal external components.

Replacement Considerations

Consult official substitution guides for compatible alternatives within the same product family or from other manufacturers. Verify pin-to-pin compatibility and electrical parameter equivalence before replacement.