FAN2365AMPX

Overview

The FAN2365AMPX is a 15 A synchronous buck regulator from onsemi, housed in a 34-pin PQFN package. It operates with an input voltage range of 4.5 V to 24 V and provides an adjustable output voltage from 0.6 V to 5.5 V. The device supports switching frequencies between 200 kHz and 1 MHz. It features hysteretic control for fast transient response and includes comprehensive protection mechanisms such as over-current, over-temperature, and UVLO.

Feature Summary

• Hysteretic control architecture enables rapid transient response without external compensation components
• Integrated synchronous rectification improves efficiency across load ranges
• Wide input voltage capability supports various power supply rails
• Built-in protection against over-current, over-temperature, and under-voltage lockout

Applications

• Point-of-load regulation for industrial equipment
• Power distribution systems in telecommunications infrastructure
• Voltage regulation for embedded computing modules
• Power supplies for automotive electronics

Procurement Notes

Verify the specific datasheet revision and ordering suffix before procurement. Confirm that the 34-pin PQFN footprint matches your PCB layout requirements. Check for end-of-life status or alternative recommendations from onsemi if long-term availability is critical. Ensure thermal management design accounts for the package's power dissipation capabilities under maximum load conditions.

Selection Notes

Select this component when high current delivery up to 15 A is required with minimal external component count. The hysteretic control simplifies design by removing the need for error amplifier compensation networks. Consider the input voltage range suitability for your system's power source. Evaluate thermal performance based on expected ambient temperatures and board copper area for heat sinking.

Part Context

This part belongs to onsemi's family of high-current synchronous buck regulators designed for demanding applications. It shares architectural similarities with other devices in the series but offers specific current handling and pinout configurations tailored for dense power designs. The PQFN package provides a compact solution for space-constrained boards while maintaining robust thermal performance.

Replacement Considerations

Check onsemi's official cross-reference tools for direct replacements. Verify compatibility of control topology and pin assignments if substituting with similar hysteretic buck regulators. Ensure any alternative part meets the same 15 A current rating and input voltage specifications.