FAN5355UC02X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN5355UC02X is a high-performance, low-noise synchronous buck converter from onsemi. It integrates two N-channel power MOSFETs and operates with an input voltage range of 2.7V to 5.5V. The device provides a fixed output voltage of 1.8V with a maximum load current capability of 3A. It features a switching frequency of 2.2MHz, enabling the use of small external inductors and capacitors. The converter includes comprehensive protection mechanisms such as over-current protection, thermal shutdown, and soft-start functionality to ensure reliable operation in portable electronic applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates dual N-channel power MOSFETs for compact solution size
• Provides fixed 1.8V output with high efficiency across load ranges
• Includes built-in over-current protection and thermal shutdown
• Features fast transient response suitable for dynamic load conditions

Voltage Regulators - DC DC Switching Regulators Applications

• Portable media players and smartphones
• Tablets and handheld computing devices
• Wireless communication modules
• Digital signal processors requiring stable 1.8V supply

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'UC02X' against official onsemi documentation to confirm pinout and package configuration. Ensure compatibility with your PCB layout requirements regarding the UDFN-6L package. Cross-reference the datasheet revision date to validate electrical characteristics before finalizing procurement specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.8V output is required within a 2.7V to 5.5V input range. Consider its 3A current capability and 2.2MHz switching frequency for designs prioritizing small passive component sizes. Evaluate thermal performance based on expected ambient temperatures and board copper area for heat dissipation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the FAN5355 family of synchronous step-down converters designed for mobile applications. It shares architectural similarities with other members but differs in output voltage configuration and specific packaging options. The UC02X designation indicates a specific variant optimized for particular system integration needs within the broader portfolio.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct substitutes like FAN5355UC01X or FAN5355UC03X if different output voltages are acceptable. Verify pin-to-pin compatibility and electrical parameter overlaps before substitution. Consult official cross-reference lists for validated alternatives.