FAN53555BUC18X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53555BUC18X is a synchronous step-down switching regulator IC from the TinyBuck series, manufactured by onsemi. It features a programmable output voltage range of 0.6V to 1.23V and delivers up to 5A of continuous output current. The device operates with an input voltage range of 2.5V to 5.5V and utilizes a fixed switching frequency of 2.4MHz. Packaged in a compact 20-WLCSP (1.96x1.56mm) format, it supports surface mount installation and functions within an operating temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification topology for high efficiency
• Digitally programmable output voltage control
• Compact wafer-level chip scale packaging

Voltage Regulators - DC DC Switching Regulators Applications

• Cloud systems computing power distribution
• Portable electronic devices requiring efficient DC-DC conversion
• Embedded systems with limited board space constraints

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS3 compliance and REACH status prior to integration. Check for specific lot traceability requirements if applicable to your manufacturing standards. Ensure storage conditions adhere to moisture sensitivity level guidelines to prevent package damage during assembly processes.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a small form factor is critical alongside high current delivery capabilities. The integrated synchronous design reduces external component count compared to non-synchronous alternatives. Consider the 2.4MHz switching frequency for balancing electromagnetic interference filtering requirements against transient response speeds in your specific circuit layout.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the FAN53555 family of digital programmable regulators originally developed by Fairchild Semiconductor and later acquired by onsemi. The BUC suffix indicates specific output voltage programming configurations within the broader product line. These components are designed for applications demanding precise voltage regulation in minimal physical footprints.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Public confirmed substitutes include FAN53555BUC79X and FAN53555UC01X. Verify pinout compatibility and electrical parameter alignment before substitution.