FAN53202UC23X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53202UC23X is a synchronous step-down switching regulator manufactured by Fairchild Semiconductor. It features a programmable output voltage starting from 0.6V and delivers a maximum continuous output current of 5A. The device operates with an input voltage range suitable for single-cell lithium-ion battery applications. It integrates a high-frequency PWM controller to minimize external component size. The IC is housed in a compact 20-pin WLCSP package, measuring approximately 1.8mm x 2.4mm with a height of 0.5mm. It supports a switching frequency that aids in achieving high power density.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous buck topology for high efficiency
• Programmable output voltage control
• Compact wafer-level chip scale packaging
• Integrated high-side and low-side MOSFETs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronics powered by single-cell Li-ion batteries
• Base station equipment requiring efficient DC-DC conversion
• Industrial control systems with space-constrained PCB layouts
• Consumer devices needing high-current regulation in small form factors

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific manufacturer source, as Fairchild Semiconductor operations have transitioned to onsemi. Confirm the lifecycle status, as some sources indicate this part may be obsolete or discontinued. Ensure the package type matches the required 20-WLCSP footprint. Check for RoHS compliance documentation if environmental regulations apply to your assembly process. Validate authenticity through authorized distributors to avoid counterfeit components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a high-current, programmable output is required in a minimal footprint. It is suitable for designs where input voltage varies, such as battery-powered systems. Consider the thermal performance of the WLCSP package under full load conditions. Compare against fixed-output alternatives if voltage flexibility is not needed. Ensure the application supports the required switching frequency for optimal inductor selection.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the FAN532xx series of digital programmable buck regulators. These devices are designed for applications demanding precise voltage regulation and high efficiency. The series typically includes variants with different current ratings and package options. Fairchild's portfolio in this segment focuses on integrating control logic and power stages into small packages to reduce board space.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-to-pin replacements within the same family, such as other FAN532xx variants with adjusted current ratings. Verify compatibility with existing inductor and capacitor selections. Ensure the replacement maintains the same programmability interface and output voltage range. Consult updated datasheets from onsemi for any functional changes in newer revisions.