FAN5355UC00X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN5355UC00X is a synchronous step-down switching regulator from onsemi, designed for high-efficiency power conversion in compact form factors. It operates with an input voltage range of 2.5 V to 5.5 V and delivers a maximum output current of 5 A. The device features a fixed output voltage of 1.2 V and utilizes a 2.4 MHz digitally programmable switching frequency. Packaged in a 20-WLCSP (1.96x1.56 mm) footprint, it supports operation temperatures from -40°C to +85°C. Key electrical characteristics include a line regulation of 0.01%/V and load regulation of -0.1%/A.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology ensures high efficiency across the load range
• Digitally programmable switching frequency allows optimization for size or performance
• Compact WLCSP package minimizes PCB area requirements
• Integrated error amplifier provides stable regulation under varying conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring efficient core voltage generation
• Industrial control systems needing compact power solutions
• Communication equipment utilizing low-voltage digital logic

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distributors only. Confirm RoHS compliance status as specified in the official datasheet. Check for end-of-life notices or obsolescence announcements prior to procurement. Ensure storage conditions meet moisture sensitivity level requirements. Validate part markings against manufacturer specifications to prevent counterfeit risks.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this regulator when space constraints necessitate a small footprint combined with high current capability. Consider the fixed 1.2 V output suitability for specific logic families. Evaluate thermal management needs based on the 5 A output capacity and ambient operating temperature range. Compare alternative packages if larger board real estate is available for improved heat dissipation.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the TinyBuck family of power management integrated circuits. It represents onsemi's solution for applications demanding high power density and efficiency in portable devices. The series integrates control circuitry and power switches into a single compact package.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official replacement guides for equivalent functionality.