BD90522EFJ-CE2

Overview

The BD90522EFJ-CE2 is a positive fixed-output step-down switching regulator IC manufactured by ROHM Semiconductor. It delivers a constant 1.2V output at up to 2A load current with an input voltage range of 2.69V to 5.5V. The device operates at a fixed switching frequency of 2.25MHz and utilizes an 8-SOIC package with an exposed pad for thermal management.

Feature Summary

• Integrated synchronous buck converter topology for high efficiency
• Fixed 1.2V output configuration suitable for digital core power supplies
• Compact 8-SOIC package design with exposed thermal pad

Applications

• Portable electronic devices requiring stable low-voltage power rails
• Embedded systems utilizing 1.2V logic families
• Battery-powered consumer electronics

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm the specific suffix CE2 matches project requirements. Check for obsolescence status as some listings indicate discontinuation. Ensure ESD protection protocols are followed during handling and assembly processes.

Selection Notes

Select this part when a fixed 1.2V rail is required from a single-cell lithium battery source. The 2.25MHz frequency allows for smaller external inductors compared to lower-frequency alternatives. Verify that the 2A output capability meets the peak load demands of the target circuit.

Part Context

This component belongs to the BD9052x series of DC-DC converters. It shares architectural similarities with other members like the BD90521, though output voltages and packages may differ. The series targets portable applications needing efficient power conversion from single-cell sources.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer resources for direct pin-compatible alternatives or functional equivalents within the same product family.