FAN53528DUC40X

Voltage Regulators - DC DC Switching Regulators Overview

The FAN53528DUC40X is a digitally programmable buck switching regulator IC manufactured by Fairchild Semiconductor, now part of onsemi. It features a wide input voltage range from 2.5 V to 5.5 V and delivers a maximum output current of 3 A. The device operates at a fixed switching frequency of 2.4 MHz and provides a programmable output voltage range between 0.35 V and 1.14 V. Packaged in a compact 15-UFBGA or WLCSP format, it supports efficient power management for portable applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Digitally programmable output voltage via I2C interface
• High efficiency step-down DC-DC conversion topology
• Compact footprint suitable for space-constrained designs

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics
• Mobile communication devices
• Embedded systems requiring stable low-voltage rails

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin carefully, as Fairchild Semiconductor was acquired by onsemi. Ensure the specific suffix matches your board layout requirements. Confirm RoHS compliance status with the supplier. Request original datasheets to validate electrical parameters against your design specifications before finalizing orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a high-current, digitally adjustable output is required within a small package. The 2.4 MHz frequency allows for smaller external passive components compared to lower-frequency alternatives. Ensure the control interface compatibility with your microcontroller's I2C bus is verified prior to integration into the system architecture.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the TinyBuck family of regulators designed for mobile and handheld applications. It represents a transition period product where Fairchild branding may still appear despite onsemi ownership. The series focuses on balancing performance density with ease of digital configuration for modern embedded power architectures.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct cross-reference models within the onsemi portfolio that share identical pinouts and electrical characteristics. Verify if newer revisions offer improved thermal performance or updated packaging options while maintaining functional equivalence for existing designs.