FAN53525UC96X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53525UC96X is a synchronous step-down DC-DC converter manufactured by onsemi, formerly Fairchild Semiconductor. It operates with an input voltage range of 2.5V to 5.5V and provides a programmable output voltage between 0.6V and 1.39V. The device delivers a maximum output current of 3A at a fixed switching frequency of 2.4MHz. It utilizes a 15-WLCSP package measuring 2.02x1.31mm. The component supports surface mount installation and functions within an ambient temperature range of -40°C to 85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification topology for improved efficiency
• Digitally programmable output voltage control
• Compact WLCSP footprint for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronic devices requiring efficient power management
• Embedded systems utilizing single-cell lithium-ion batteries
• Consumer electronics with strict size limitations

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation carefully, as the part was originally produced by Fairchild Semiconductor and is now managed by onsemi following corporate acquisition. Confirm that the specific suffix UC96X corresponds to the required output voltage configuration and packaging variant. Ensure compliance with RoHS3 standards and check for any obsolescence notices regarding this specific revision before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for converting 3.7V lithium-ion battery voltages to lower logic levels. The fixed 2.4MHz frequency allows for smaller external inductors compared to lower-frequency alternatives. Consider the 3A current limit against peak load requirements and ensure the thermal performance of the WLCSP package meets the application's dissipation needs under continuous operation.

Voltage Regulators - DC DC Switching Regulators Part Context

This regulator belongs to the TinyBuck series, designed specifically for high-density applications. The family emphasizes minimal external component counts and small physical footprints. The transition from Fairchild to onsemi branding requires attention to datasheet revisions and ordering information updates to ensure compatibility with existing design files and supply chain records.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.