FAN53528EUC48X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53528EUC48X is a synchronous step-down switching voltage regulator manufactured by Fairchild Semiconductor, now part of onsemi. It features a digitally programmable output voltage ranging up to 1.14V with a maximum continuous output current of 3A. The device operates from an input supply voltage between 2.5V and 5.5V. It utilizes a fixed switching frequency of 2.4MHz for efficient power conversion. The component supports an operating temperature range of -40°C to +85°C and includes internal protection mechanisms such as thermal shutdown.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Digitally programmable output voltage control via I2C interface
• Synchronous rectification architecture for enhanced efficiency
• Compact TinyBuck package design suitable for space-constrained applications

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring low profile power solutions
• Embedded systems needing adjustable voltage rails
• Battery-powered devices utilizing step-down regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'EUC48X' matches the required tape-and-reel packaging configuration. Check for RoHS compliance status and ensure the obsolete manufacturing status does not impact long-term supply chain stability for production needs.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this regulator when a 3A current capacity and digital voltage adjustment are required within a small footprint. Ensure the application input voltage remains within the 2.5V to 5.5V range. Consider the 2.4MHz switching frequency for inductor size trade-offs. Verify that the target output voltage does not exceed the 1.14V maximum limit specified for this variant.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the TinyBuck family of DC-DC converters designed for high-density power management. Fairchild Semiconductor was acquired by onsemi, which continues to support the product line. The FAN53528 series is characterized by its integration of control logic and power stages into a minimal package, targeting mobile and portable markets.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The FAN53528EUC48X is listed as obsolete and no longer manufactured. Evaluate compatible alternatives within the onsemi portfolio that offer similar 3A synchronous buck capabilities and digital programmability. Ensure pinout compatibility and electrical parameter alignment before substituting.