FAN53528DUC40X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53528DUC40X is a synchronous step-down DC-DC converter from onsemi’s TinyBuck series. It operates with an input voltage range of 2.7V to 5.5V and provides a single adjustable output from 0.8V to 4.95V. The device delivers up to 3A of continuous output current at a fixed switching frequency of 2.4MHz. Packaged in a compact 16-WLCSP (1.96x1.56mm) format, it supports operation temperatures from -40°C to 85°C. This regulator integrates power MOSFETs for high efficiency in point-of-load applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates synchronous power MOSFETs within a single-phase topology for efficient step-down conversion
• Features low bias current operation suitable for battery-powered portable devices
• Utilizes a compact WLCSP package to minimize PCB footprint in space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring efficient point-of-load regulation
• Battery-operated devices needing low quiescent current consumption
• Embedded systems utilizing single-rail power distribution architectures

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component status carefully as this part may be listed as End-of-Life or obsolete in certain distributor databases. Confirm availability of alternative sources or last-time buy options if immediate procurement is required. Ensure the specific suffix matches the required packaging configuration for your assembly line processes.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 3A output capability and 2.4MHz switching frequency are required within a minimal footprint. It is appropriate for designs needing an input range up to 5.5V and adjustable output voltages starting at 0.8V. Consider thermal management requirements associated with the small WLCSP package under full load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to onsemi’s TinyBuck family, designed for high-density power solutions. It complements other PMIC offerings by providing standalone buck regulation with integrated switches. The series targets applications where board space is limited and efficiency is critical for extending battery life in mobile and industrial equipment.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct substitutes within the FAN53528 series or compatible TinyBuck variants. Verify pinout compatibility and electrical specifications against alternatives such as the FAN53528 without the 40X suffix if available. Consult official obsolescence notices for recommended replacement part numbers.